Table 1 Characteristics of eligible meta-analyses (m-a)
From: A systematic appraisal of allegiance effect in randomized controlled trials of psychotherapy
Characteristic; n (%), unless otherwise stated | Value |
|---|---|
Number of eligible m-a | 30 (100) |
Number of included studies per m-a; median (IQR) | |
 Total | 6 (5–9) |
 With ≥1 allegiance | 4 (3–5) |
 With no allegiance | 2 (1–4) |
Sample size; median (IQR) | 493 (239–803) |
Meta-analysis favors | |
 Experimental arm | 20 (66.7) |
 No significant difference | 10 (33.3) |
Type of data: | |
 Binary | 18 (60.0) |
 Continuous | 12 (40.0) |
Types of psychotherapy: | |
 Cognitive behavior therapy (CBT) | 19 (63.3) |
 Behavioral therapy (BT) | 2 (6.7) |
 Family systems therapy (FST) | 1 (3.3) |
 Psychological debriefing | 1 (3.3) |
 Psychoanalytically informed psychotherapies (PIPs) | 1 (3.3) |
 Supportive or counseling therapy | 3 (10.5) |
 Variants of CBT | 3 (10.5) |
Outcomes: | |
 Anxiety disorders | 6 (20.0) |
 Depression | 4 (13.3) |
 Chronic pain | 4 (13.3) |
 Eating disorders | 2 (6.7) |
 Personality disorders | 2 (6.7) |
 Substance use disorders | 2 (6.7) |
 Smoking cessation | 2 (6.7) |
 Asthma | 1 (3.3) |
 Chronic fatigue syndrome | 1 (3.3) |
 Common mental disorders | 1 (3.3) |
 Mental illness and substance disorders | 1 (3.3) |
 Schizophrenia | 1 (3.3) |
 Tinnitus | 1 (3.3) |
 Hypertension | 1 (3.3) |
 Miscellaneous conditions (behavioral problems) | 1 (3.3) |