Fig. 1

Pruned tree for social environmental intervention with moderator variable “Age” with two leaves (File ‘Fig. 1 pruned.png’). Legend: Pruned tree involving the variable Age and a split point of 46.5 years; the effect sizes d are expressed as the standardized mean difference between the group with the social environmental intervention (SEI⁺) and the group without (SEI⁻); For the leaf assigned to P1 (i.e., the left green leaf) the effect size d is positive, while for the leaf assigned to P2, the effect size d is negative