Table 4.
Effect sizes.
| Study | Intervention in TG | Dependent variable | Effect sizes for 3-months post assessments | Effect sizes for 6-months post assessments | Type of analysis | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Within-condition for TG | Between-condition for TG vs. alc.-unrelated CG | Between-condition for TG vs. alc.-related CG | Within-condition for TG | Between-condition for TG vs. alc.-unrelated CG | Between-condition for TG vs. alc.-related CG | |||||
| MAIN OUTCOMES | Hedge’s gav | Hedge’s gs | Hedge’s gs | Hedge’s gav | Hedge’s gs | Hedge’s gs | ||||
| (1) Alcohol-related symptoms | ||||||||||
| Nadkarni et al. (89) | MI + CBT | AUDIT | 0.65 | – | 0.12 | – | – | – | Intent-to-treat a | |
| L’Engle et al. (102) | MI + RH counseling | AUDIT | – | – | – | 1.78 | 0.60 | – | Complete case a | |
| Wandera et al. (99) | MI + HIV counseling | AUDIT (modified to 3-months reference period) | 0.65 | – | -0.19 | 0.64 | – | -0.04 | Intent-to-treat | |
| Pengpid et al. (104) | MI | ASSIST-SSIS for alcohol | 2.07 | 0.17 b | – | 2.53 | 0.55 b | – | Intent-to-treat | |
| Pengpid et al. (103) | MI + behav. elements | AUDIT (modified to 6-months reference period) | – | – | – | 1.42 | – | -0.15 | Intent-to-treat | |
| Witte et al. (91) | MI + HIV counseling | AUDIT | 1.26 | -0.46 | -0.20 | 1.50 | -0.36 | -0.39 | Intent-to-treat | |
| Sorsdahl et al. (98) | MI + CBT | ASSIST-SSIS for alcohol | 2.15 c | – | 0.83 c | – | – | – | Complete case d | |
| Peltzer et al. (93) | MI behav. elements | AUDIT (modified to 3-months reference period) | 1.82 | – | -0.17 | 2.46 | – | 0.23 | Intent-to-treat | |
| Assanangkornchai et al. (101) | MI | ASSIST-SSIS for alcohol | 1.83 | – | 0.13 | 2.54 | – | 0.19 | Intent-to-treat | |
| Mertens et al. (97) | MI | ASSIST-SSIS for alcohol | 1.20 | – | 0.06 | – | – | – | Complete case d | |
| Sheikh et al. (90) | MI + relative as co-therap. | AUDIT-C | 3.61 e | 2.15 e | – | – | – | – | Complete case | |
| (2) Alcohol amount consumed per defined unit | ||||||||||
| Nadkarni et al. 2017 (89) | MI + CBT | Mean standard drinks per day (past 14 d) | – | – | 0.17 | – | – | – | Intent-to-treat | |
| Papas et al. (112) | CBT | Mean standard drinks per drinking day (past 30 d) | 0.96 | 0.40 | – | – | – | – | Complete case | |
| Noknoy et al. (105) | MI | Mean standard drinks per drinking day (past 7 d) | 0.66 | 0.62 | – | 0.80 | 0.52 | – | Intent-to-treat | |
| Wandera et al. (99) | MI + HIV counseling | Mean standard drinks per drinking day (past 3 months) | -0.06 | – | -0.27 | -0.07 | – | -0.10 | Intent-to-treat | |
| Pengpid et al. (104) | MI | Past week alcoholic use units | 0.79 | 0.20 b | – | 0.87 | 0.10 b | – | Intent-to-treat | |
| (3) Other outcomes | ||||||||||
| Kalichman et al. (95) | MI + HIV counseling | No. of times of alcohol use before sex (past month) | 0.49 | 0.36 | – | 0.29 | 0.34 | – | Intent-to-treat | |
| Pal et al. (100) | MI | Number of d used alcohol (past 30 d) | 1.58 | – | 0.87 | – | – | – | Complete case | |
| Omeje et al. (87) | Rational-Emotive Th. | AUDS f | 7.42 g | 5.85 g | – | – | – | – | Complete case | |
| Segatto et al. (88) | MI | mean no. of alcohol use days (past 3 months) | 0.45 | – | -0.13 | – | – | – | Complete case | |
data of relevant outcome was provided from authors upon request.
Hedge’s gs value is based on a comparison of CG1 (alcohol use only) and CG2 (tobacco use only) since an integrative treatment condition (tobacco + alcohol) was not of interest here.
Displayed is the effect size value of TG2 (enhanced condition). Effect size values for TG1 are: gav=1.17 and gs=0.05 for 3-months FU assessments.
data of relevant subsample was provided from authors upon request.
FU-assessment conducted at 2-months, not 3-months, post intervention (no later FU-assessment available).
Alcohol Use Disorder Scale; ad-hoc developed scale; only limited information available about it, therefore categorized in “other outcomes”.
FU-assessment conducted at 2-weeks not 3-months, post intervention (no later FU-assessment available).
“—”indicates that effect size was not calculable.
Negative effect sizes indicate superiority of the comparison group over the respective experimental group on this particular measure.
Hedge’s gav (within-condition effect sizes) uses the average standard deviation of both repeated measures as a standardizer.
Hedge’s gs (between-condition effect sizes) uses the pooled standard deviation of both independent measures as a standardizer.
ASSIST-SSIS, ASSIST-Specific Substance Involvement Scores; AUDIT, Alcohol Use Disorder Identification Test; AUDS, Alcohol use disorder scale (ad-hoc developed scale); CG, Control Group; RH, reproductive health; TG, Treatment Group.