sleep symptoms at T0) was also significant (Coeff. = 0.00; *p* \< 0.00; *c*′ *path*). The indirect effect of maternal sleep symptoms at T0 on those at T0, through the mediation of PTS symptoms, was significant (*R*^0^ = 0.00; *F* = 00.00; *p* \< 0.000; Coeff. = 0.00; 00% CI = \[0.00, 0.00\]) and the coefficient of the *R*-squared mediation effect size was 0.00 (00% CI = 0.00, 0.00).  