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Table 2 Papers included in the meta-analysis.

From: How evidence-based is an 'evidence-based parenting program'? A PRISMA systematic review and meta-analysis of Triple P

  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
  1. 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.