 PTS symptoms (Coeff. = 0.00; *p* \< 0.00; *a path*). The mediator's effect on the difficult child dimension was significant (Coeff. = 0.00; *p* \< 0.00; *b path*). The direct effect of sleep disturbances on the difficult child dimension was also significant (Coeff. = 0.00; *p* \< 0.00; *c*′ *path*). Moreover, PTS symptoms partially mediated the association between sleep disturbances and the difficult child dimension (*r*^0^ = 0.00; *F* = 00.00; *p* \< 0.000; Coeff. = 0.00; 00% CI = 