Table 6. Weighted mean effect sizes and homogeneity statistics for in-person vs. computer-delivered personalized feedback interventions at follow-ups.
| Study | Sample Size | Weighted effect sizes (d) | |||||
|---|---|---|---|---|---|---|---|
| In Person PFI |
Computer- delivered PFI | ddrinksweek | dquantity | dfrequency | dBAC | dproblems | |
| Short Follow-up | |||||||
| Alfonso, Hall, & Dunn (2013) | 53 | 48 | -- | 0.22 | -- | 0.10 | −0.17 |
| Alfonso, Hall, & Dunn (2013) | 72 | 48 | -- | −0.04 | -- | −0.17 | −0.37 |
| Butler & Correia (2009) | 28 | 30 | −0.31 | −0.31 | −0.08 | -- | 0.09 |
| Doumas & Hannah (2008) | 40 | 38 | -- | −0.11 | −0.19 | -- | -- |
| Doumas, Workman, Navarro, & Smith (2011b) | 21 | 16 | −0.75 | −0.53 | −0.24 | -- | −0.71 |
| Juarez, Walters, Daugherty, & Radi (2006) | 15 | 20 | -- | −0.36 | -- | -- | 0.38 |
| Murphy, Dennhardt, Skidmore, Martens, & McDevitt-Murphy (2010) | 41 | 38 | 0.22 | 0.22 | 0.07 | 0.27 | |
| Walters, Vader, Harris, Field, & Jouriles (2009) | 70 | 58 | 0.13 | 0.13 | -- | −0.08 | −0.07 |
| Walton et al. (2010) | 204 | 201 | -- | -- | −0.14 | -- | −0.01 |
| White, Mun, Pugh, & Morgan (2007) | 164 | 154 | 0.03 | 0.03 | 0.01 | −0.17 | 0.16 |
| Random-effects d+ (95% CI) |
-.04 (-.29, .20) | -.01 (-.12, .13) | -.07 (-.21, .06) | -.09 (-.24, .06) | -.06 (-.24, .12) | ||
| Long Follow-up | |||||||
| Cunningham et al. (2012) | 204 | 201 | -- | -- | −0.21 | -- | −0.02 |
| Doumas, Workman, Smith, & Navarro (2011a) | 36 | 47 | 0.19 | 0.13 | 0.24 | -- | −0.09 |
| Monti et al. (2007) | 78 | 83 | 0.30 | 0.30 | 0.26 | -- | 0.02 |
| Murphy et al., (2004) | 24 | 27 | 0.02 | 0.02 | −0.10 | -- | 0.01 |
| Walters, Vader, Harris, Field, & Jouriles (2009) | 67 | 54 | 0.18 | 0.18 | -- | 0.04 | −0.07 |
| White, Mun, Pugh, & Morgan (2007) | 113 | 106 | 0.15 | 0.15 | 0.17 | 0.18 | 0.27 |
| Random-effects | 0.19 | 0.18 | 0.07 | 0.13 | 0.05 | ||
| d+ (95% CI) | (0.03, 0.34) | (0.02, 0.34) | (−0.15, 0.28) | (−0.08, 0.35) | (−0.09, 0.18) | ||
Note. PFI = Personalized Feedback Intervention. -- indicates that data was not provided on the outcome. Positive effect sizes favor in- person (IPFIs). Bold indicates significant effects (p < .05).