| Domains Pertaining to Strength of Evidence | Magnitude of Effect | Strength of Evidence | ||||
|---|---|---|---|---|---|---|
| Number of Studies; Number of Subjects | Risk of Bias; Design | Consistency | Directness | Precision | Summary Effect Size (95% CI) | High, Moderate, Low, Insufficient |
| PTSD Symptom Reduction: CAPS | ||||||
| 1; 72 | Medium; RCT | NA, single study | Direct | Imprecise | WMD −6.3 favoring IPT, p<0.05 | Insufficient |
| Remission (CAPS<20) | ||||||
| 1; 72 | Medium; RCT | NA, single study | Direct | Imprecise | RD 0.04 favoring IPT | Insufficient |
| Prevention/reduction of comorbid depression: HAM-D | ||||||
| 1; 72 | Medium; RCT | NA, single study | Direct | Imprecise | WMD −0.3, p=ns | Insufficient |
| Quality of Life: Quality of Life Enjoyment and Satisfaction Questionnaire | ||||||
| 1; 72 | Medium; RCT | NA, single study | Direct | Imprecise | WMD −10.1 favoring IPT, p<0.05 | Insufficient |
| Function: Inventory of Interpersonal Problems Questionnaire | ||||||
| 1; 72 | Medium; RCT | NA, single study | Direct | Imprecise | WMD −0.46 favoring IPT, p<0.05 | Insufficient |
CI = confidence interval; HAM-D= Hamilton Depression Rating Scale; NA = not applicable; PTSD = post-traumatic stress disorder; RCT = randomized controlled trial
From: Appendix I, Strength of Evidence
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