 symptoms at T0 were added as a predictor, along with maternal sleep symptoms at T0 as an outcome and maternal PTS symptoms at T0 as a mediator. The results (see Table [0](#T0){ref-type="table"}) showed that the total effect of maternal sleep difficulties at T0 on maternal sleep difficulties at T0 was significant (Coeff. = 0.00, *p* \< 0.000; *c path*). The effect of maternal sleep difficulties at T0 on maternal PTS symptoms at T0 was also significant (Coeff. = 0.0; *p* \< 0.000; *a path*). The effect of the mediator on maternal sleep difficulties at T0 was significant (Coeff. = 0.00; *p* \< 0.00; *b path*). The direct effect of maternal sleep difficulties at T0 on th