Table 2.
Study characteristics for studies reporting continuous measures on alcohol use
| Study | N | Gender boys | Age | School level | Program | Program intensity | Outcome | Time points in months | Hedges’g T1 | Hedges’g T2 | Hedges’g T3 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Caplan et al. 1992 [66] | 282 | 55% | 12.00 | JHS | PDYP | High | c | 3 | 0.33* | ||
| Clark et al. 2010 [62] | 2467 | 49% | 16.72 | HS | Project SUCCESS | Medium | b | 1, 12 | 0.01 | 0.04 | |
| D’Amico et al. 2002 [45] | 300 | 42% | 16.00 | HS | DARE & RSTP | Low | a | 2, 6 | 0.06 | 0.27*** | |
| Newton et al. 2009 [57] | 764 | 60% | 13.08 | JHS | CLIMATE2 | High | a | 1, 6 | 0.12 | 0.36*** | |
| Peleg et al. 2001 [64] | 1000 | 44% | 15.50 | JHS | LST | Medium | c | 12, 24 | 1.17*** | 0.95*** | |
| Reddy et al. 2002 [53] | 4776 | 51% | 11.90 | JHS | HRIDAY | High | c | 12 | 0.18*** | ||
| Shope et al. 1992 [63] | 2589 | - | 10.50 | ES | AMPS | Medium | c | 6, 18, 30 | 0.06 | 0.12 | 0.11 |
| Vogl et al. 2009 [61] | 1466 | 59% | 13.00 | JHS | CLIMATE1 | Medium | a | 1, 6, 12 | 0.01** | 0.02 | 0.04 |
| Warren et al. 2006 [48] | 4734 | 53% | 12.50 | JHS | keepin’it R.E.A.L | Medium | b | 18 | 0.07* | ||
| Werch et al. 2005 [58] | 604 | 44% | 15.24 | HS | Project SPORT | Low | c | 3, 12 | 0.22** | 0.10 | |
| Werch et al. 1996 [51] | 104 | 44% | 13.80 | JHS | STARS | Medium | b | 1, 2 | 0.21 | 0.46* | |
| Wilhelmsen et al. 1994 [65] | 915 | - | 13.50 | JHS | Young and alcohol | Medium | c | 3 | 0.04 |
Note. a = Report changes in weekly alcohol use, b = Report changes in monthly alcohol use, c = Report changes in lifetime alcohol use. JHS = Junior High School; HS = High School; ES = Elementary School. AMPS = Alcohol Misuse Prevention Study; CLIMATE = 1Alcohol Course, 2Alcohol and Cannabis course; DARE = Drug Abuse Resistance Education; HRIDAY = Health Related Information and Dissemination Among Youth (Hindu word for “Heart”); R.E.A.L = Refuse, Explain, Avoid, Leave; LST = Life Skills Training; PDYP = Positive Youth Development Program; RSTP = Risk Skills Training Program; SUCCESS = Schools Using Coordinated Community Efforts to Strengthen Students; STARS = Start Taking Alcohol Risks Seriously. *p < .05. **p < .01 ***p < .001.