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Technology-based health solutions for cancer caregivers to better shoulder the impact of COVID-19: a systematic review protocol



Cancer patients are particularly vulnerable to COVID-19, partially owing to their compromised immune systems and curbed or cut cancer healthcare services caused by the pandemic. As a result, cancer caregivers may have to shoulder triple crises: the COVID-19 pandemic, pronounced healthcare needs from the patient, and elevated need for care from within. While technology-based health interventions have the potential to address unique challenges cancer caregivers face amid COVID-19, limited insights are available. Thus, to bridge this gap, we aim to identify technology-based interventions designed for cancer caregivers and report the characteristics and effects of these interventions concerning cancer caregivers' distinctive challenges amid COVID-19.


A systematic search of the literature will be conducted in PubMed, PsycINFO, CINAHL, and Scopus from the database inception to the end of March 2021. Articles that center on technology-based interventions for cancer caregivers will be included in the review. The search strategy will be developed in consultation with an academic librarian who is experienced in systematic review studies. Titles, abstracts, and full-text articles will be screened against eligibility criteria developed a priori. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses procedures will be followed for the reporting process.


COVID-19 has upended cancer care as we know it. Findings of this study can shed light on evidence-based and practical solutions cancer caregivers can utilize to mitigate the unique challenges they face amid COVID-19. Furthermore, results of this study will also offer valuable insights for researchers who aim to develop interventions for cancer caregivers in the context of COVID-19. In addition, we also expect to be able to identify areas for improvement that need to be addressed in order for health experts to more adequately help cancer caregivers weather the storm of global health crises like COVID-19 and beyond.

Systematic review registration

PROSPERO CRD42020196301

Peer Review reports


A growing body of research is exploring the impact of COVID-19 on cancer care and management [1,2,3]. Already acknowledged as being infectious and deadly [4, 5], as of 8 January 22nd, 2021, there are approximately 96.2 million confirmed COVID-19 cases, among which, 2.06 million deaths have already occurred [6]. Through a retrospective analysis of 355 patients dying from the coronavirus, one in five of these patients had active cancer [7]. Individuals with cancer can experience underlying malignancy, treatment-induced immunosuppression, and possible comorbidity [8,9,10], and it has been shown that they are more likely to develop severe symptoms from COVID-19 [8, 9, 11]. Research also indicates that, compared to COVID-19 patients without cancer, COVID-19 patients with cancer are more likely to have higher risks in all severe outcomes (e.g., higher mortality rates) [8, 9]. Additional factors may further increase cancer patients' vulnerability to COVID-19, such as limited access to medical resources and cancer care, during this pandemic [12,13,14].

Due to medical resource rationing, many cancer care and treatment services were either canceled or indefinitely postponed during the early part of the COVID-19 pandemic [15, 16]. No longer having access to the healthcare services they were accustomed to or depended upon [11, 16], informal cancer caregivers may now be shouldering considerably more caregiver burden due to COVID-19. While the effects of this deprivation of access to cancer care on cancer patients are well discussed [17, 18], caregiving responsibilities influencing cancer caregivers’ health and well-being is less examined. Other than healthcare professionals in a caring role as a part of their work, an informal caregiver is generally offered unpaid or ill-compensated care to a family member or a friend, due to disease-centered or aging-related reasons. Pre-COVID-19 data show that caregivers shoulder approximately 70–89% of all care needed by patients in general [19]. Considering the interruptions COVID-19 exerts on cancer care and treatment, it is probable that cancer caregivers are shouldering even greater caregiving responsibilities for patients.

Cancer caregivers have been facing tremendous stressors during the COVID-19 pandemic. The range of issues resembles a triple crisis of (1) confronting the impact of the coronavirus outbreak, (2) shouldering pronounced care needs from the patient, and (3) coping with considerable needs for physical and psychological care from within. In other words, in addition to being forced to deal with a pandemic and patients’ pronounced cancer care needs discussed above, caregivers may also experience substantial physical and psychological health issues that require timely medical attention. Mounting evidence indicates that cancer caregivers often face considerable caregiver burden that can negatively impact their physical and psychosocial health [20,21,22]. In a review study, findings on 21,149 caregivers show that the prevalence of depression and anxiety is 42.30% and 46.55% in these caregivers, respectively [23]. It is important to note that blanket measures, such as lockdowns, self-isolation, and social distancing, can exert further pressure on cancer caregivers. Research suggests that social support from community members can lower anxiety and depression experienced by cancer caregivers; these supports are significantly limited due to social distancing recommendations [24].

Technology-based interventions refer to “the use of technology to manage or support health promotion strategies aiming to produce accessible and affordable health solutions to the target audience” [25]. Studies have shown that technologies (e.g., telehealth) may be beneficial to address issues cancer caregivers experienced during COVID-19; with some research identifying the potential improvement to health and well-being [26,27,28]. Technology-based interventions can offer greater accessibility to care for cancer caregivers that can be (1) delivered remotely without physical contacts between interventionists and the caregivers [29, 30], (2) received cost-effectively without the need for transportation [27], and accessed conveniently with self-paced learning [31, 32] of tailored content [33, 34]. In addressing the unique challenges cancer caregivers face amidst COVID-19, no research has identified technology-based health solutions for cancer patients that can address these needs, such as care needs, general healthcare needs, information and communication needs, and social support needs (see Table 1). Thus, to bridge this gap, this systematic review identifies the literature surrounding technology-based solutions for cancer caregivers that can mitigate challenges they face amid COVID-19.

Table 1 Cancer caregivers' unique needs associated with COVID-19


Study registration and protocol

This review was registered with the International Prospective Register of Systematic Reviews or PROSPERO (CRD42020196301). We will also follow the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) in our research procedures [35] to further safeguard research rigor.

Search strategy

The following databases will be searched for potential articles: PubMed, PsycINFO CINAHL, and Scopus. The search will be limited to original articles published in English from the database inception to the end of March 2021. Searches incorporated medical subject heading (MeSH) and keyword terms in three categories: cancer, caregivers, and technology platforms. Our search strategy will be developed in consultation with an academic librarian experienced in systematic review studies to ensure research rigor. Snowballing (manual searching reference lists) of included studies will be conducted to obtain additional eligible articles. Furthermore, reverse tracing potential eligible manuscripts that cited included papers will be administered via Google Scholar. An example search string is listed in Table 2.

Table 2 Example PubMed search string

Inclusion and exclusion criteria

In the context of this study, caregivers are defined as patients’ family or friends who may offer mostly long-term care to patients, often with little or no financial compensation of any form. This paper broadly defines interventions as stimuli or mechanisms that are aimed to produce changes in outcome variables (e.g., self-care abilities increased). Studies will be included if they are published in English, have relevant information on technology-based interventions for cancer caregiving, and with detailed inclusion criteria listed in Table 3. Ensuring data quality, comments, editorials, gray literature, and reviews will be excluded from the review. Overall, articles will be excluded if they (1) did not include a cancer caregiver population, (2) did not provide information on intervention, and (3) did not describe how technology is integrated into the intervention strategy.

Table 3 Study inclusion criteria

Selection of studies and data extraction

Search results will be managed using Rayyan [36], a free web application that allows sorting and storing articles will be used to remove duplicate records and screen articles. Both two phrases of screening, title-abstract screening and full-text screening, will be conducted by two primary reviewers (ZS and XL) independently. Discrepancies will be solved by consensus, and when needed, with input from the rest of the research team. Data will be extracted independently by the reviewers (ZS and XL) based on the research aim and selection criteria adopted in this study. Specifically, for studies that met the inclusion criteria, the primary reviewers (ZS and XL) will extract the following information from the final included studies: study and participant characteristics (e.g., study aim), intervention characteristics (e.g., the use of technology in interventions), and details on study outcomes (e.g., intervention outcomes).

Data synthesis and analysis

If eligible studies are found to be heterogeneous, we will conduct a narrative synthesis instead, as opposed to a meta-analysis, to summarize key insights from the data. A summary of the key information extracted will be utilized to synthesize the main research findings. Descriptive analysis will be performed on categorical variables. If there are enough similarities in eligible papers to be pooled, a meta-analysis will be conducted to obtain further insights from the data. The Cochrane's Q test and I2 test will be adopted to calculate heterogeneity within studies—I2 values of 25%, 50%, and 75% suggest low, medium, and high heterogeneity, respectively [37]. If much heterogeneity is present, random-effect models will be adopted (as opposed to fixed-effect models), as these models are more robust in detecting large variations in studies [38]. Review manager 5.3 (Cochrane Collaboration software) will be utilized to conduct the random effect model. Visual inspection of funnel plots will be used to evaluate publication bias if needed. If enough data are available for meaningful investigation (e.g., theoretically or clinically meaningful), subgroup analyses will be conducted for diverse types of cancer types, stages, interventions, follow-up duration, caregiver types, and country. A sensitivity analysis will be conducted by sequentially removing one study periodically and reanalyzing the data to evaluate the impact of individual studies on overall outcomes. This process will allow potentially methodologically flawed research included in the review; a study will be considered acceptable if it affects the meta-estimate of less than ± 5%.

Risk of bias and quality of evidence

The Cochrane Collaboration evaluation framework will be utilized to investigate the risk of bias of articles that met the inclusion criteria, including selection, performance, detection, attrition, reporting, and other biases [39]. The framework has seven domains: random sequence generation, allocation concealment, blinding of participants and personnel, blinding of outcome assessment, incomplete outcome data, selective reporting, and any other source of bias. Two primary reviewers (ZS and XL) will evaluate the included articles’ quality independently, and give the articles a score (high, medium, or low) based on results of the evaluation. These reviewers will also independently adopt the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) framework to assess the overall quality of evidence of the eligible articles. The GRADE guideline has five domains: risk of bias, indirectness, inconsistency, imprecision, and publication bias [40]. Any discrepancies will be resolved via group discussions till a consensus is reached.


COVID-19 has upended cancer care as we know it [41,42,43,44,45]. Evidence shows that pandemics of COVID-19’s scale could be particularly deadly to vulnerable populations such as cancer patients [2, 3, 8,9,10, 46]. Furthermore, COVID-19 prevention mechanisms, such as lockdowns, self-isolation, and social distancing measures, as well as COVID-19-induced medical resources rationing, have curbed or cut cancer patients and their caregivers’ access to traditional healthcare services [47,48,49,50]. Not to mention chaos and consequences associated with pandemic information overload, COVID-19 infodemics, and dysfunctional vaccine dissemination may further compound cancer patients and their caregivers’ interaction with the ever-increasingly overstretched and overstressed healthcare systems [51,52,53]. As a result, cancer caregivers often have to step up to address patients’ healthcare needs and wants [42, 54,55,56,57], which, in turn, could exert substantial mental and physical stress on informal caregivers, above and beyond COVID-19-related burdens the general public shoulders daily [20,21,22]. Technology-based health solutions can bypass spatial distancing constraints caused by COVID-19 and have the ability to address unique challenges cancer patients, and their caregivers face amid COVID-19 [58,59,60,61].

As the frontline physician among us observed, the most challenging cancer care component during COVID-19 is how to resume cancer treatment for patients [1]. Because the pandemic has caused severe limitations to access to cancer care and availability of transportation, across the world, many patients, even in severe conditions, had to suspend their treatment plans [1, 56, 62]. Take Chinese cancer patients, for instance. The pandemic occurred during the Chinese traditional spring festival. As a result, a large number of cancer patients traveled home with their caregivers for their extended-family reunion. However, due to the outbreak [63], after the spring festival, most of them were under lockdown at their hometown or somewhere in between, without access to critical cancer care and treatment options. Even among patients and caregivers who managed to rush back to the hospital for their treatments, they had to be self-quarantined for 14 days and then undergo a series of tests. Technologies, such as the “Health Code”, a digital color-coded health system that allows the governments and health agencies to track cell phone location to better determine individuals’ whereabouts (i.e., whether they have recently traveled to places witnessed severe COVID-19 outbreaks) [64], undoubtedly have helped expedite the information processing speed, and saved valuable time these patients and caregivers desperately needed.

However, while useful insights are available in the literature, there is a dearth of research that can shed light on evidence-based and practical health solutions cancer caregivers can use to address and alleviate unique challenges they face during COVID-19 or any future disease pandemics. Therefore, to bridge this gap, we aim to identify technology-based interventions designed for cancer caregivers and report the characteristics and effects of these interventions concerning the distinctive challenges cancer caregivers face amid COVID-19. Additionally, this paper will present practical insights into the diverse intervention approaches that can help deliver digital health solutions for cancer caregivers amid and beyond COVID-19. Furthermore, this study’s results can also offer valuable insights for researchers who aim to develop interventions for cancer caregivers in the context of COVID-19. In addition, it is also expected to identify areas for improvement that need to be addressed in order for health experts to more adequately help cancer caregivers weather the storm of global health crises like COVID-19 and beyond.

Availability of data and materials




Coronavirus disease 2019


Preferred Reporting Items for Systematic Reviews and Meta-Analyses


International Prospective Register of Systematic Reviews


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The authors wish to express their gratitude to Emme Lopez, the academic librarian who helped with finalizing the search strategy. Gratitude also goes to the editors and reviewers for their constructive input.



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ZS developed the research idea and drafted the manuscript. DMD, BL, JK, XL, SS, SA, BEF, and JW reviewed and revised the manuscript. All authors read and approved the final manuscript.

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Correspondence to Zhaohui Su.

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Su, Z., McDonnell, D., Liang, B. et al. Technology-based health solutions for cancer caregivers to better shoulder the impact of COVID-19: a systematic review protocol. Syst Rev 10, 43 (2021).

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