Table 2. Comparison of the Quality of Sleep in Postpartum Women Between Case and Control Groups Before and After the Intervention.

Variable Intervention	Mean ± SD	P Valuea
Before intervention		0.64
Case	8.2911 ± 2.11922
Control	8.4557 ± 2.30272
4 weeks after intervention		0.216
Case	7.5949 ± 2.52941
Control	8.0633 ± 2.20339
8 weeks after intervention		0.033
Case	6.7975 ± 2.36632
Control	7.5696 ± 1.14646

^aIndependent t test.