- Open Access
The effectiveness of acupuncture research across components of the trauma spectrum response (tsr): a systematic review of reviews
Systematic Reviews volume 1, Article number: 46 (2012)
Co-morbid symptoms (for example, chronic pain, depression, anxiety, and fatigue) are particularly common in military fighters returning from the current conflicts, who have experienced physical and/or psychological trauma. These overlapping conditions cut across the boundaries of mind, brain and body, resulting in a common symptomatic and functional spectrum of physical, cognitive, psychological and behavioral effects referred to as the ‘Trauma Spectrum Response’ (TSR). While acupuncture has been shown to treat some of these components effectively, the current literature is often difficult to interpret, inconsistent or of variable quality. Thus, to gauge comprehensively the effectiveness of acupuncture across TSR components, a systematic review of reviews was conducted using the Samueli Institute’s Rapid Evidence Assessment of the Literature (REAL©) methodology.
PubMed/MEDLINE, the Cochrane Database of Systematic Reviews, EMBASE, CINAHL, and PsycInfo were searched from inception to September 2011 for systematic reviews/meta-analyses. Quality assessment was rigorously performed using the Scottish Intercollegiate Guidelines Network (SIGN 50) checklist and the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) methodology. Adherence to the Standards for Reporting Interventions in Clinical Trials in Acupuncture (STRICTA) criteria was also assessed.
Of the 1,480 citations identified by our searches, 52 systematic reviews/meta-analyses, all high quality except for one, met inclusion criteria for each TSR component except post-traumatic stress disorder (PTSD) and sexual function. The majority of reviews addressed most STRICTA components, but did not describe safety.
Based on the results of our review, acupuncture appears to be effective for treating headaches and, although more research is needed, seems to be a promising treatment option for anxiety, sleep disturbances, depression and chronic pain. It does not, however, demonstrate any substantial treatment benefit for substance abuse. Because there were no reviews on PTSD or sexual function that met our pre-defined inclusion criteria, we cannot comment on acupuncture’s effectiveness in treating these conditions. More quality data are also needed to determine whether acupuncture is appropriate for treating fatigue or cognitive difficulties. Further, while acupuncture has been shown to be generally safe, safety was not described in the majority of studies, making it difficult to provide any strong recommendations. Future research should address safety reporting in detail in order to increase our confidence in acupuncture’s efficacy across the identified TSR components.
There is a complex interaction between pain, psychological distress and physical function [1–4]. Individuals with chronic pain often report depression , anxiety , sleep disturbance [7–9], fatigue , and changes in physical and cognitive functioning [11–14], mood , personality  and social relationships . Research supports a positive association between a history of physical and/or psychological trauma and chronic pain [18–22] and depression . Individuals with post-traumatic stress disorder (PTSD) have high rates of co-occurring conditions including suicide [24, 25], substance abuse , anxiety , headache  and chronic pain [29, 30], greater emotional distress , more interference with activities of daily living  and more pronounced disability than in pain patients without a history of trauma or PTSD .
These overlapping conditions, potentially triggered by combined mind-body/brain injuries have been termed the Trauma Spectrum Response (TSR)  and often include: (1) psychological and emotional distress (that is, depression, anxiety, PTSD); (2) cognitive impairment (for example, memory, attention); (3) chronic and, often refractory pain of organic and psychosomatic origins; (4) headache; (5) substance abuse; and (6) somatic dysfunction (that is, sexual function, fatigue, sleep disturbances; (Figure 1). Because the majority of individuals, after a psychological or physical injury, experience disturbances in one or more of these areas at varying degrees, the TSR, much like Seyle’s general stress response , is useful for understanding the whole person response to stress and injury.
Identifying appropriate self-management and treatment interventions for the TSR is critically important given the number of service members across the world returning from the Operation Enduring Freedom (OEF) and Operation Iraqi Freedom (OIF) conflicts with complex multi-symptom illness (CMI)  and functional disabilities, including traumatic brain injury (TBI), operational and/or combat stress, PTSD, and chronic pain.
The complex symptomatology of TSR is currently treated with a biomedical approach that usually provides isolated, specialized medical care for each symptom or diagnosis. Resulting medical procedures and poly-pharmacy treatment plans, however, may not fully address the TSR’s complexity and are frequently complicated by overlapping side-effects and difficulty in coordinating care . Because such co-occurring conditions have been identified as bio-psychosocial determinants of persistent and chronic pain [36, 37] in both trauma  and non-trauma populations , chronic pain may be better treated with a biopsychosocial approach that considers the complex interplay of physiological, psychosocial, environmental, cognitive, behavioral, and affective factors that influence an individual’s pain experience [40–42]. This whole-person approach can assess the ‘full spectrum of trauma-related morbidities (rather than individual components),’ in order to enhance the patient’s inherent healing mechanisms and capacities [29, 43].
Acupuncture may be a promising whole-person treatment option for TSR as dynamic, ‘multi-mechanism’ responses are elicited by the insertion of thin needles at specific body points which influence several interacting pathways in trauma response and recovery . Because acupuncture has been found to be effective in treating several individual conditions that form TSR (that is, insomnia [45–47], depression [48, 49], chronic pain [50–52], headaches [53, 54]) and other multiple co-morbidities ), it could be potentially advantageous for treating the multi-symptom complex of TSR. To date, however, no systematic reviews have examined acupuncture efficacy across the entire TSR. Although reviews on individual components of TSR exist, their methods vary, and their conclusions are often difficult to interpret, inconsistent or contradictory as they do not apply consistent methods. As such, we conducted a ‘systematic review of reviews’ using the Samueli Institute’s Rapid Evidence Assessment of the Literature (REAL©) methodology in order to achieve the following aims, developed in accordance with the PICO (that is, population, intervention, control, outcome) framework: (1) survey the available systematic reviews and meta-analyses to assess acupuncture efficacy comprehensively across the individual TSR components in all populations; (2) identify and summarize the quantity and quality of the published reviews; (3) describe the characteristics and safety issues of, and whether they adhere to, the Standards for Reporting Interventions in Clinical Trials of Acupuncture (STRICTA) criteria; and (5) identify gaps in research areas to guide a future research agenda.
Data sources and search strategy
The following databases were searched from their inception to September 2011: PubMed/MEDLINE, the Cochrane Database of Systematic Reviews, EMBASE, CINAHL, and PsycInfo to identify systematic reviews and meta-analyses on acupuncture as the intervention and each TSR component as an evaluated outcome. The authors explored MeSH (Medical Subject Headings) within MEDLINE to strategize the most powerful search and also consulted with three subject matter experts (SMEs; AY, AD, RW) to ensure that the correct key terms were being targeted for acupuncture and the various TSR components (see Table 1 for the full search strategy designed for the PubMed database). Variations of the search strategy for the remaining databases are available upon request from the primary author. Following traditional REAL© methodology which includes only peer-reviewed randomized controlled trials, systematic reviews or meta-analyses published in the English language, all searches were conducted with these specific limits, in addition to studies that involved human subjects. Where this was not a limit option in certain databases, citations were screened for these criteria.
Articles were included if they met the following criteria: (1) systematic review or meta-analysis study design, with individual studies of any study design, presented in the English language and involving human subjects; (2) all populations being treated with acupuncture for at least one of the TSR components, as described in Table 1; (3) acupuncture involving needling of the skin at either recognized acupuncture or Ah Shi points; and (4) studies that used at least one outcome to measure a TSR component as described above.
Because broad search terms were used to be as comprehensive as possible for each TSR component, our searches would likely yield articles on a variety of conditions (for example, ‘sleep disturbance’ may yield articles on insomnia, narcolepsy, sleep apnea). To guide the team in screening articles for inclusion, our medical SME (RW), a retired Navy Captain and physician who has worked clinically with wounded service members, developed specific keywords and definitions; conditions considered to be sequelae of physical and/or psychological trauma were included in this review (see Table 1).
Acupuncturists often include additional interventions in their treatments, and recommend of self-management techniques (that is, skills that individuals can perform independently without requiring reliance on a trainer or therapist). These elements cannot be controlled and are often considered to be part of acupuncture treatment rather than adjunctive to acupuncture treatment. As such, we chose to include the following criterion, which was created to ensure that treatment effects were attributable only to acupuncture rather than to other interventions: acupuncture administered (a) alone; (b) with a co-intervention, defined as an intervention that was provided additionally to both treatment and control groups; or (c) with one of the following interventions, often considered to be part of acupuncture treatment: (i) techniques commonly used with acupuncture (for example, tui na, acupressure, cupping, moxibustion, herbs, tai qi, qi gung, gua sha, bleeding, Ah Shi points), and/or (ii) self-management techniques (for example, stretching exercises, meditation, tai chi, breathing exercises, suggested dietary/lifestyle changes).
Articles were excluded if they met at least one of the following criteria: (1) any study design other than a meta-analysis or systematic review; (2) the focus was on an intervention other than acupuncture; (3) acupuncture intervention did not involve needling of the skin at either recognized acupuncture or Ah Shi points (that is, TENS, laser acupuncture, dry needling or trigger point injections at non-acupuncture sites); (4) the acupuncture treatment plan included additional interventions/modalities that were not acupuncture-related or self-management techniques; (5) articles did not include at least three studies on a TSR-related outcome; and (6) quality assessment was not performed across the individual studies screened.
Data extraction and quality assessment
We conducted this review using a web-based, secure, systematic review management program known as Mobius Analytics SRS (Copyright 2003–2009 Mobius Analytics Inc., Ottawa, ON, Canada), which automates article progression and management, eliminates data transcription and reduces post-review data collation and errors.
Two investigators (CL, JS) independently screened titles and abstracts for relevance based on the inclusion criteria pre-defined above. Any disagreements about inclusion were resolved either through discussion and consensus or by one of the SMEs. After this first, liberal screen, all articles marked for inclusion underwent a second level of screening due to the heterogeneity and abundance of reviews marked thus far for inclusion. The team felt it was important to ensure the final set of studies would be homogenous enough to be able to make definitive conclusions. As such, during this second screening phase, all articles with titles mentioning other interventions or complementary alternative therapies in general (that is, articles investigating the effect of various complementary and alternative medicine (CAM) therapies) were then excluded. Doing so would ensure that the focus was specific to the acupuncture intervention as defined by our inclusion criteria. All articles marked for inclusion after the second screen were retrieved and underwent a third level of screening during which one investigator screened the full text articles based on the inclusion criteria above for cross-checking.
Methodological quality was independently assessed by three reviewers (CL, JS, MS) for the individual studies included using the Scottish Intercollegiate Guidelines Network (SIGN 50) checklist for systematic reviews, a validated and reliable assessment approach widely used in the literature . The following descriptive data were extracted: population, type of acupuncture, control intervention, all TSR-related outcome measures assessed, number of studies included, results of the individual reviews as reported by the authors, and whether the reviews reported on adverse events. Controls were grouped into the following categories: pharmacologic, no treatment (for example, standard care, wait list), placebo/sham acupuncture, CAM, behavioral/psychosocial (for example, rehabilitation, psychological therapy), acupuncture, physiological (for example, physical therapy, oxygen training), and other.
A rulebook that detailed how to extract this information and how to score the SIGN criteria objectively was developed by Samueli Institute researchers and was used to train the reviewers to ensure consistency in data extraction and reduce the number of errors and post-extraction data cleaning. Three reviewers, fully trained in this methodology, reviewed the articles in pairs until a sufficient kappa (>90%) was achieved, at which point they continued reviewing the remaining articles independently. All disagreements were resolved either through discussion and consensus, or by the SMEs.
Information regarding the criteria for the revised STRICTA guideline’s six-item checklist was also extracted. STRICTA, first published in 2001 and revised in 2010, is a formal extension of CONSORT, expanding the general content of item five (around the intervention description specific to acupuncture) of the CONSORT statement . It was designed to improve the completeness of reporting interventions in controlled acupuncture trials so that such trials can provide a clear and accurate account of both acupuncture and control/comparison protocols. Because complete and accurate trial reports can facilitate dissemination, interpretation, translation and replicability, we noted whether or not authors included the information detailed in the STRICTA guidelines  in the included systematic reviews and meta-analyses. This would help us to determine where the gaps lay specific to acupuncture research.
Once the quality assessment of individual reviews was completed, two SMEs (AY, AD) examined the collected data and results of the individual reviews included to develop an ‘interpretation of the results’ by noting whether the individual reviews reported positive (favoring acupuncture), inconclusive (favoring neither acupuncture nor the comparison group), or negative (favoring the comparison group) results and whether the quality of the studies included in each review were of poor or strong methodology.
A meta-analysis was not conducted due to the heterogeneity across studies and lack of effect size reporting in the individual studies. Instead, the SMEs then performed a quality assessment of the overall literature pool for each component of TSR identified using a modified version of the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) , an internationally accepted approach to grading the quality of evidence and strength of recommendations across studies. This GRADE was modified by the team to fit the parameters for evaluating systematic review results, and SMEs were trained in this methodology using a rulebook developed, tested and agreed upon by the entire team (available by contacting the primary author). Both SMEs examined the outcomes of the individual systematic reviews for each TSR component in order to: (1) examine the confidence in the results (using the same methodological criteria for GRADE but adapting the scoring to be: acupuncture shown to be effective; acupuncture promising, but no conclusions yet; unable to interpret/contradictory results; acupuncture shown to not be effective); (2) assign a safety grade to the literature; and (3) develop recommendations for the acupuncture literature based on the REAL© results for the overall literature pool of reviews for each of the TSR components. The overall magnitude of effect of the results was not assessed nor calculated for the purposes of this review. SMEs performed the GRADE independently before discussing their answers together and coming to consensus.
Because some reviews included the same studies, the studies were de-duplicated across all reviews within each TSR component in order to determine the ‘true’ total number of studies and participants included. It is important to note, however, that some reviews differed in the way they calculated their total sample, and as such, the total number of participants we report may be slightly inaccurate; when there was a discrepancy between reviews in how they reported their total number of participants, the higher number of participants was taken. Further, while we present the total, de-duplicated, number of studies and participants in the GRADE and results, for purposes of this overall analysis, all studies were still included as reported in each review to describe each included review accurately.
Our search yielded a total of 1,480 citations from database inception to September 2011. Of the total 54 reviews included, 52 fit the inclusion criteria and were assessed using the SIGN 50 quality scoring tool for systematic reviews (see Figure 2 for the flow of included studies). Two studies [60, 61] were excluded because they did not assess the effectiveness of acupuncture but instead focused on assessing STRICTA adherence and the methodology of included studies, and, as such, were included only in the STRICTA analysis.
Table 2 describes the characteristics of the individual reviews included as well as the overall SIGN 50 score, grouped by each TSR component; because this review focuses on the effectiveness of acupuncture, we have ranked reviews within each TSR component first by quality, and then by interpretation of results, so that an article’s results can be easily viewed within the context of its quality (see Additional file 1: Appendix 1 for SIGN 50 criteria and scores for each review). Table 3 describes the GRADE results of the overall literature pool and Table 4 describes the STRICTA assessment, both grouped by the individual TSR component.
There are three major domains that comprise the core of the modified GRADE methodology: 1) Confidence in the results was categorized into the following groups using pre-defined criteria: (1) Acupuncture shown to be effective:the majority of the results are of high quality and all show positive results; or there is a most recent largest review showing positive results of highest quality; (2) Acupuncture promising, but no conclusions yet: mix of positive and inconclusive results, but no negative results found among the reviews; the majority of the reviews are of high quality; (3) Unable to interpret/contradictory results: low quality review or the majority of the studies have mixed/inconclusive results; or (4) Acupuncture shown to be not effective: the majority of the reviews report negative results. 2) Safety grade is dependent on the frequency and severity of adverse events and interactions. Safety is categorized into one of the following grades: +2: appears safe with infrequent adverse events and interactions; +1: appears relatively safe but with frequent but not serious adverse events and interactions; 0: safety not well understood or conflicting; -1: appears to have safety concerns that include infrequent but serious adverse events and/or interactions; or −2: has serious safety concerns that include frequent and serious adverse events and/or interactions. 3) Strength of the recommendation can be determined using the following categories and criteria: Strong recommendation in favor of or against: very certain that benefits do, or do not, outweigh risks and burdens; No recommendation: no recommendations can be made; or Weak recommendation in favor of or against: benefits and risks and burdens are finely balanced, or appreciable uncertainty exists about the magnitude of benefits and risks.
Effectiveness of acupuncture for TSR components
Five reviews [62–66] of high quality (++ or +), involving 53 total RCTs and 8,274 participants with headaches of varying etiologies, reported consistently favorable effects. Although safety was not clearly assessed in the included reviews, the literature suggests that acupuncture is effective for headache. Because safety is not well documented in these reviews, we believe there can only be a weak recommendation in favor of acupuncture in this area and that more high powered studies that report on safety of acupuncture are needed for this condition.
Twenty-five reviews [67–91], involving 162 RCT and controlled clinical trials (CCT) and one review of reviews with 12,675 patients total, assessed acupuncture efficacy in treating a range of chronic pain conditions (as defined in Table 1) including low back pain, neck pain, osteoarthritis, knee pain, temporomandibular disorders, carpel tunnel syndrome, rheumatoid arthritis, and trigeminal neuralgia. The majority of the results reported were either inconclusive/mixed [72–74, 76–80, 88–91] or positive [67–71, 75, 85–87] with only four reviews [81–84] reporting negative acupuncture effectiveness. We characterize acupuncture as ‘promising for pain but with no conclusions able to be drawn’ at this point because, although all the reviews were high quality, most of the reviews reported mixed results. Because acupuncture appears to be relatively safe for this condition, a weak recommendation can be made in favor of acupuncture for general chronic pain treatment. More high powered studies are needed to increase our confidence to a strong recommendation.
Seven high quality reviews [92–98] involving 48 RCTs and CCTs and 7,433 participants, studied populations with different types of substance abuse problems, including alcohol, cocaine, crack, and nicotine dependencies and other addictions. Overall, acupuncture was reported as not effective in treating these conditions. The majority of reviews had either negative or inconclusive/mixed results. Although acupuncture appears to be relatively safe, with frequent but non-serious adverse events, acupuncture is not recommended for the treatment of substance abuse problems based on the amount of negative and inconsistent results found in this literature pool. A weak recommendation against acupuncture for substance abuse is suggested based on the current literature available.
All reviews [99–104], including 9,623 patients across 83 RCT and CCTs, with insomnia, were of high quality. Half of the reviews reported positive results [99, 102, 103] for acupuncture while the remainder reported inconclusive/mixed results [100, 101, 104] suggesting that acupuncture may be a promising treatment option. Based on this literature pool, acupuncture appears to be relatively safe, and, as such, a weak recommendation is made for the treatment of sleep disturbances, although no firm conclusions can be drawn yet.
Six high quality reviews [105–110] including 73 RCTs with 7,986 participants assessed the efficacy of acupuncture in treating patients with depression or depressive disorders. Four reviews reported inconclusive/mixed results and two reviews [105, 106] documented positive acupuncture effects. These two reports included the two most recent reviews on acupuncture for depression involving 35 and 19 studies, respectively. Although safety was not clearly assessed in these reviews, acupuncture seems to be a promising treatment, but no definitive conclusions can be drawn at this point. A weak recommendation can be made in favor of this intervention for depression; however, more studies assessing safety issues are needed.
One review of high quality  reported positive results in a population of 1,201 patients across eight RCT and two CCTs with anxiety or anxiety disorders. Safety was not clearly assessed in this review across the studies. Acupuncture is promising for this condition due to the consistently positive results but because safety is not well understood at this point, only a weak recommendation can be made in favor. More high powered studies are needed in this area.
Reviews on cognitive processes involving memory, attention, concentration and problem-solving were searched. Only one high quality review  involving 10 RCTs and 960 participants was found, reporting inconclusive/mixed acupuncture results for treating subjects with vascular dementia. Given that adverse events were not reported and results were unable to be interpreted, no recommendation can be made as to whether or not acupuncture is a viable treatment option for cognitive functioning.
Although one review  including 31 CCT and RCT studies involving a population of 1,826 participants with chronic fatigue syndrome showed positive acupuncture results and frequent, but non-serious adverse events, the quality of this review was rated low and, therefore, no recommendation can be made for acupuncture at this time.
There were no reviews on acupuncture and PTSD or sexual function that met the pre-defined inclusion criteria.
STRICTA and safety assessment
Overall, the majority of reviews addressed acupuncture rationale (96%), control or comparator interventions (96%) and details of other interventions administered to the acupuncture group (93%). A large number of reviews also reported on details of needling (67%) and aspects of the treatment regimen including number of treatment sessions (65%) and frequency of treatments (41%). Settings and context of treatment (6%) as well as practitioner background (2%) were the least reported STRICTA components. Further, the reviews included within each TSR component covered a similar percentage of STRICTA criteria (ranging from 50% to 65%) with the headache reviews covering the majority of STRICTA criteria (73%; see Table 4).
Expected, likely risks reported from acupuncture include localized discomfort and infection, slight bleeding and bruising at needle insertion sites [114–116]. Serious adverse events (that is, injury to brain/spinal cord, pneumothorax, cardiac tamponade, systemic infection, syncope) have been reported but are extremely rare . Of the 52 reviews included in our analyses, 29 [63, 70, 71, 73, 74, 76–79, 84, 85, 90, 92, 93, 95, 98–105, 107–111, 113] reported on adverse events with six [53, 62, 70, 73, 84, 93, 95] reviews reporting no adverse events. Twelve reviews [74, 76, 85, 90, 92, 98, 101–105] reported expected, likely adverse events, and four reviews [63, 70, 78, 111] reported that adverse events occurred but did not describe them. A number of reviews also reported more uncommon events including dizziness/fainting [77, 79, 104, 105, 113], drowsiness/fatigue [92, 99, 108], gastrointestinal problems [77, 104, 105], sleep disturbance [102, 109], dry mouth [104, 109], and headache [99, 104, 109]. Other adverse events such as herpes zoster , ‘blunt sight’ , hangover , general weakness , failure of coordination , palpitations  and ataxia  were less frequently reported with each of these events only being reported once in a single review.
Although more quality research and safety information are needed to determine whether acupuncture is useful in treating TSR components (.that is, PTSD, sexual function, cognitive function, fatigue), the results of our review suggest that acupuncture may be a beneficial or promising treatment for some components (that is., headache, anxiety, sleep disturbances, depression, chronic pain) and not beneficial for others (that is, substance abuse).
When reviewing the data in total, a number of factors influenced our conclusions and subsequent recommendations. The years in which the individual reviews were conducted had an impact on quality as the majority of the studies were conducted in the early to mid-2000s and at that time the number of quality clinical trials was low. There has been a sizable increase in the number of acupuncture studies of higher quality within the last decade. Thus, more recent reviews are more likely to capture accurately the effectiveness of acupuncture for TSR components .
In addition, there has been improvement in the reporting of acupuncture trials since the 2001 STRICTA publication. Yet, based on the 2010 revision of the STRICTA guidelines, significant inconsistency remains in the quality of reporting around the acupuncture intervention studies. Moreover, journals do not regularly require standardized reporting guidelines and those that do are not rigorous in ensuring that the guidelines are followed.  Although a number of the quality criteria were addressed in these reviews, STRICTA components should be more consistently applied in future studies and by journals in order to increase our confidence that acupuncture studies are being performed and reported properly.
We also examined the data for any reports about the setting, context and expectations of treatment and found that information on these aspects of the studies was addressed in only 6% of the reviews. Context, ritual and expectation have a significant impact on clinical outcomes in acupuncture trials [118–121], and these are likely to be important aspects to consider particularly when conducting an acupuncture trial in a physically and psychologically traumatized population. Creating an empathic, healing relationship  and helping patients find ‘embodied’ states of safety prior to placement of acupuncture needles may enhance its effectiveness, mitigate anxiety and pain associated with needle placement, and deepen the critical experience of safety for trauma survivors. We recommend that future research collect and report on these aspects. This will improve our understanding about what and how much of the effects of acupuncture are attributable to ritual, beliefs and other placebo components versus the specific effects of acupuncture .
Overall, there were few highly powered studies included in the reviews and most reviews did not report on adverse events. While acupuncture has been shown to be generally safe , safety was not described in the majority of reviews, making it difficult to provide a strong GRADE recommendation when this information was lacking. Thus, the majority of conditions were given a ‘weak recommendation in favor’ of acupuncture. Future research should address safety reporting, and detail this well enough for the reader to understand fully all acupuncture-related adverse events.
For a number of the TSR components, particularly chronic pain, there was a notable diversity of conditions listed in the individual reviews. It was difficult for us to tease out chronic pain conditions in these reviews that fit our pre-determined definition for chronic pain according to the American Chronic Pain Association’s criteria. Despite this existing diversity, the tools utilized for the individual quality assessment of the reviews allowed for informed conclusions to be made. Formulating more narrowly focused research questions in particular conditions, however, may help researchers better understand the treatment effects of acupuncture for given populations within specific conditions and is a topic for future research.
This review had a few limitations. First, the number of participants for each TSR component may not be completely accurate because some reviews included the same studies. While we were able to identify which studies were duplicated across reviews, many reviews differed in the way in which they reported their total participants; this discrepancy prevented us from accurately determining the number of total participants. Second, we were unable to capture the magnitude of the effect because this information was not always reported in the included reviews for our outcomes of interest. Third, only systematic reviews that assessed methodological quality were considered and we subsequently excluded any narrative or descriptive reviews. The fourth study limitation was our adherence to pre-defined inclusion criteria. Because we applied our criteria to both the reviews and their included studies, we did not always include the full set of studies from each review as some of the reviews (that is, those on laser acupuncture) did not meet our criteria. Finally, we reviewed acupuncture across each individual TSR component rather than across all components because there is no current literature that assesses the entire TSR spectrum. Since it appears that acupuncture affects more of the TSR components, future research should examine the impact of symptoms, quality of life and function in combinations of these conditions such as in CMI. To our knowledge only one study has specifically examined the effectiveness of acupuncture in CMI [124, 125].
Despite this lack of research on the TSR spectrum and CMI in its entirety, research focusing on this data suggests that acupuncture may build resiliency to these symptoms in returning service members. Walker and colleagues from the Mental Health and Behavioral Sciences Service at the Veterans Affairs Hospital in Tampa, FL have noted that the common triad of post-concussive syndromes, chronic pain and PTSD symptoms is rather unique to the OEF/OIF population and have characterized its multi-symptom presentation as ‘Post-Deployment Multi-Symptom Disorder’ . Acupuncture may be a common approach to this and CMI in other non-OEF/OIF veterans.
This multi-component and overlapping constellation of injuries in returning warfighters, also called War-related Trauma Spectrum Response (wrTSR), is very likely of different character and requires a different approach than civilian TSR . One such difference is the capacity for what has recently been termed ‘moral injury’, defined as ‘perpetrating, failing to prevent or bearing witness to acts that transgress deeply held moral beliefs and expectations’ . Because war and combat can create situations that affect this human dimension, future research should focus on identifying prevalence rates and possible co-morbid conditions to moral injury as this may be part of the TSR and other poly-trauma conditions such as Post-Deployment Multi-Symptom Disorder.
An adequate evaluation of acupuncture’s whole person impact on TSR requires a robust and comprehensive assessment that goes beyond compartmentalization of TSR into discrete disease states and acupuncture into uniformly prescribed treatment protocols. In our review, we detail a systematic and methodologically sound approach to assessing the level of evidence of acupuncture for the treatment of TSR that reflects its manifestation– as a set of complex and overlapping physical and psychological symptoms- and by doing so we provide a more complete picture of acupuncture’s effectiveness and the quality of acupuncture research, as it exists in the literature, than any one review on a single component could provide alone. Further, while the approach of this review allowed some recommendations to be made, these should be considered within the context of the individual reviews from which they were generated and not as practice guidelines. This review does, however, provide a basis for development of clinical guidelines and use by future expert panels and policy makers when making recommendations about appropriateness for use. Future research should begin to look across the multi-symptom clusters of TSR and CMI and explore acupuncture for its effectiveness and safety when treating whole person.
This is the first review of reviews that explores acupuncture’s effectiveness in treating components of the TSR. Based on the results of our review, acupuncture has demonstrated benefit for the treatment of headaches; however, safety needs to be more fully documented in order to make any strong recommendations in support of its use in treating headaches. Though more research is needed to determine whether acupuncture is useful in treating anxiety, sleep disturbances, depression and chronic pain, it does seem to be a promising treatment option. Based on our results, acupuncture does not seem to be effective for treating substance abuse, and there needs to be more high quality data before we can determine whether acupuncture is an appropriate intervention for fatigue or cognitive difficulties.
The authors have not presented this data and information before in any journal or presentation and have no professional relationships with companies or manufacturers who will benefit from the results of this present study. This material is based upon work supported by the US Army Medical Research and Materiel Command under Award No. W81XWH-06-1-0279. Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and should not be construed as an official Department of the Army position, policy or decision unless so designated by other documentation.
complementary and alternative medicine
controlled clinical trial
complex multi-symptom illness
Grading of Recommendation Assessment Development and Evaluation
Operation Enduring Freedom
Operation Iraqi Freedom
population intervention, control, study design
post-traumatic stress disorder
Rapid Evidence Assessment of the Literature
Scottish Intercollegiate Guidelines Network
subject matter expert
Standards for Reporting Interventions in Clinical Trials of Acupuncture
traumatic brain injury
trauma symptom response.
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The authors declare that they have no competing interests.
CL and CC conceived and designed the study, gathered, analyzed and interpreted the data, and drafted the manuscript. DW, RW and WJ contributed to the conception of the study design, interpretation of data and manuscript preparation. AY, AD, JS and MS contributed to the acquisition and analysis of data as well as drafting of the manuscript. All authors have read and approved the final manuscript.
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Lee, C., Crawford, C., Wallerstedt, D. et al. The effectiveness of acupuncture research across components of the trauma spectrum response (tsr): a systematic review of reviews. Syst Rev 1, 46 (2012). https://doi.org/10.1186/2046-4053-1-46
- Trauma Spectrum Response
- Systematic review of reviews
- Rapid evidence assessment of the literature (REAL©)