Table 5

Results of the mixed-effects ANOVA for the qualitative moderator variable “research team” on the effect sizes obtained from measures of behaviours in the posttest
Research team k d+ 95% C. I. ANOVA results
dl du
Cardon, Geldhof et al. (Belgium) 7 1.504 0.706 2.302 QB(3) = 14.36, p = .002
Gómez, Méndez et al. (Spain) 3 3.145 1.786 4.503 R2 = 0.0
Spence et al. (USA) 2 −0.463 −2.001 1.074 QW(10) = 366.01, p < .001
Park & Kim (South Korea) 2 0.205 −1.318 1.728
Excluding the Méndez and Gómez’s (2001) study [20]:
Cardon, Geldhof et al. (Belgium) 7 1.492 0.828 2.156 QB(3) = 8.60, p = .035
Gómez, Méndez et al. (Spain) 2 0.642 −0.634 1.917 R2 = 0.003
Spence et al. (USA) 2 −0.463 −1.759 0.832 QW(9) = 249.56, p < .001
Park & Kim (South Korea) 2 0.205 −1.074 1.483

k: number of studies. d+: mean effect size. dl and du: lower and upper confidence limits of the 95% confidence interval around the mean effect size. QB: statistic for testing the significance of the moderator variable. QW: statistic for testing the model misspecification. R2: proportion of variance accounted for by the moderator variable.

Calvo-Muñoz et al.

Calvo-Muñoz et al. BMC Musculoskeletal Disorders 2012 13:152   doi:10.1186/1471-2474-13-152

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