“…Potential confounders regarded age (Reijneveld, Brugman, Verhulst, & Verloove‐Vanhorick, ; Simpson, Cohen, Bloom, & Blumberg, ), gender (Bussing, Zima, Gary, & Garvan, ; Cuffe, Moore, & McKeown, ), family composition (Costello, He, Sampson, Kessler, & Merikangas, ), educational level (Reijneveld et al., ), social support (Nanninga, Jansen, Knorth, & Reijneveld, ), parenting skills (Nanninga et al., ), and problem severity measured with the SDQ‐TDS (Bussing et al., ; Klein Velderman, Crone, Wiefferink, & Reijneveld, ), all measured during the first measurement round (T1: entry into care). These potential confounders were chosen based on the indicated prior empirical research.…”