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Table 3 GRADEpro

From: The psychological subtype of intimate partner violence and its effect on mental health: a systematic review with meta-analyses

Summary of findings

Psychological violence on mental health

Population: Females from varying samples

Setting: Primarily observational studies.

Exposure: Psychological violence

Outcome: PTSD, depression and anxiety

Outcomes

Anticipated absolute effects* (95% CI)

Relative effect (95% CI)

№ of participants (studies)

Certainty of the evidence (GRADE)

Comments

Risk with [comparison]

Risk with [intervention]

PTSD (Hedges g)

Assessed with: multiple validated scales

0.90 (0.77; 1.04 95% CI)

-

8393 (45 observational studies)

LOW a,b,c

 

PTSD (odds ratio)

Assessed with: varying types of measures

Study population

OR 2.23 (1.37 to 3.64)

15,796 (13 observational studies)

VERY LOW c,d,e

The World Mental Health Survey has examined the 12-month prevalence of cross-country PTSD. The prevalence varied significantly by country income, with lower-low middle-income countries demonstrating a prevalence of 1.5% compared with 3.6% in high-income countries [88]. This variation is translated for the anticipated absolute effect comparing study population with low and high prevalence variations for PTSD.

10 per 1000

22 per 1000 (14 to 35)

Low

15 per 1000

33 per 1000 (20 to 53)

High

36 per 1000

77 per 1000 (49 to 120)

Depression (Hedges g)

Assessed with: multiple validated scales

0.69 (0.58; 0.81 95% CI)

-

112,487 (56 observational studies)

LOW b,d

 

Depression (odds ratio)

Assessed with: various types of measures

Study population

OR 2.13 (1.54 to 2.95)

74,147 (30 observational studies)

LOW e,f

Kessler and Bromet [89] have reviewed the 12-month prevalence estimate of Major Depressive Disorder in 18 World Mental Health Surveys. The prevalence estimates ranges from 2.2 to 10.4% across the 18 countries. This variation is translated for the anticipated absolute effect comparing study population with low and high prevalence variations for depression.

10 per 1000

21 per 1000 (15 to 29)

Low

22 per 1000

46 per 1000 (33 to 62)

High

104 per 1000

198 per 1000 (152 to 255)

Anxiety (Hedges g) Assessed with: multiple validated scales

0.58 (0.4; 0.76 95%CI)

-

7339 (20 observational studies)

LOW b,g

 

Anxiety (odds ratio)

Assessed with: various types of measures

Study population

OR 2.20 (1.75 to 2.77)

37,814 (8 observational studies)

LOW e,h

Baxter, Scott, Vos, and Whiteford [90] applied a meta-regression of prevalence studies of anxiety disorders from 44 countries. The estimated adjusted prevalence varied from 7.6 to 17.7% within the past 12 months across countries. This variation is translated for the anticipated absolute effect comparing study population with low and high Prevalence variations for anxiety.

10 per 1000

22 per 1000 (17 to 27)

Low

76 per 1000

153 per 1000 (126 to 186)

High

177 per 1,000

321 per 1000 (273 to 373)

  1. *The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI)
  2. CI confidence interval, OR odds ratio
  3. GRADE Working Group grades of evidence
  4. High certainty: We are very confident that the true effect lies close to that of the estimate of the effect
  5. Moderate certainty: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
  6. Low certainty: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect
  7. Very low certainty: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect
  8. Explanations
  9. a. I2 statistic of 94%
  10. b. E.g., gender bias, convenience samples, design
  11. c. Large range in confidence interval—imprecise results
  12. d. I2 statistic of 95%
  13. e. Design, measures, sampling
  14. f. I2 Statistic of 97%
  15. g. I2 Statistic of 91%
  16. h. I2 Statistic of 62%