Table 2.
Papers included in the meta-analysis.
| Pre-intervention | Post-intervention | ||||||
| Author | Pooled baseline score | n1 | mean1 | sd1 | n2 | mean2 | sd2 |
| Bodenmann et al. [32]a | 118.1 | 50 | 115.4 | 22.6 | 50 | 104.7 | 23.9 |
| Connell et al. [50] | 157.0 | 12 | 159 | 10.58 | 12 | 117.33 | 22.77 |
| Gallart & Matthey [26] | N/A | 17 | 137.1 | 34.8 | 17 | 112 | 31.7 |
| Hahlweg et al. [51]* | 13.2 | 31 | 13 | 7.6 | 32 | 7.8 | 5.7 |
| Hahlweg et al. [13]* | 11.6 | 57 | 9.3 | 6.6 | 169 | 10.43 | 7.43 |
| Hoath & Sanders [53] | 162.1 | 11 | 148.36 | 40.29 | 9 | 125.22 | 35.63 |
| Joachim et al. [54] | 129.5 | 18 | 130.17 | 27.75 | 22 | 109.41 | 27.36 |
| Leung et al. [55] | 134.7 | 36 | 136.45 | 27.3 | 33 | 107.28 | 31.03 |
| Markie-Dadds & Sanders [56] | 148.6 | 12 | 146.92 | 15.53 | 28 | 116.3 | 31.53 |
| Markie-Dadds & Sanders [57] | 132.7 | 22 | 136.23 | 31.62 | 21 | 100.76 | 29.9 |
| Martin & Sanders [58] | 130.3 | 11 | 126.09 | 28.11 | 16 | 99.88 | 22.39 |
| Matsumoto et al. [59] | 106.3 | 25 | 105.8 | 25.28 | 25 | 94.12 | 23.79 |
| Matsumoto et al. [60] | 112.7 | 26 | 107.04 | 29.25 | 25 | 104.12 | 24.45 |
| Morawska & Sanders [61] | 120.7 | 37 | 123.4 | 27.54 | 75 | 108.59 | 22.96 |
| Morawska & Sanders [62] | 118.1 | 34 | 111.71 | 28.8 | 32 | 103.38 | 25.67 |
| Morawska et al. [63] | 146.8 | 27 | 152.26 | 27.14 | 23 | 124.7 | 20.61 |
| Sanders et al. [65] | 152.8 | 71 | 136.79 | 28.42 | 184 | 113.32 | 29.53 |
| Sanders et al. [66] | 115.9 | 28 | 108.59 | 33.36 | 28 | 98.74 | 28.04 |
| Sanders et al. [27] | 121.7 | 40 | 119.31 | 25.8 | 33 | 111.77 | 30.87 |
| Turner & Sanders [68] | 128.8 | 13 | 112.25 | 20.50 | 12 | 114.08 | 22.69 |
| Turner et al. [67] | 140.6 | 18 | 130.74 | 33.97 | 20 | 124.14 | 31.71 |
| Whittingham et al. [24] | 143.1 | 30 | 148.63 | 30.33 | 29 | 121.4 | 25.28 |
| Wiggins et al. [23]* | 65.1 | 22 | 63.4 | 10.4 | 27 | 57.7 | 9.7 |
Pooled mean pre-intervention score and post-intervention scores: n1, mean1 and sd1 are respectively group size, mean and standard deviation for the control groups post-intervention, and n2, mean2 and sd2 are the corresponding figures for the Triple-P intervention groups. Means and standard deviations are for ECBI-I subscale data, apart from the three papers marked with an asterisk, where the CBCL-E was reported. aECBI subscale data reported in [32] were assumed to have been transposed, and are corrected here. In this paper attrition rates at the post-treatment assessment are unknown and we assumed they remained constant. CBCL-E, Child Behavior Checklist - Externalizing Scale; ECBI-I, Eyberg Child Behavior Inventory - Intensity scale.