Sleep in the Postpartum: Characteristics of First-Time, Healthy Mothers

Table 5

Correlations of depression and anxiety with mothers’ daytime and sleep characteristics and with infants’ sleep characteristics.

	2 months		6 months
	Depression (EPDS)	Anxiety (GAD-7)	Depression (EPDS)	Anxiety (GAD-7)
Nighttime variables
Poor sleep quality (SSC)	.452	.449	.130	.431
Insomnia Severity Scale (ISI)	.642	.584	.287	.488
Difficulty initiating or maintaining sleep (DIMS)
Sleep onset problem (SSC)	.338	.182	.111	.374
Sleep maintenance problem (SSC)	.490	.398	.024	.157
Waking too early (SSC)	.144	.178	.126	−.029
Nighttime TST, mother (diary)	−.176	−.039	−.354	−.315
Nighttime TST, infant (diary)	−.165	−.053	−.266	−.184
Number of nighttime sleep episodes, mother (diary)	−.068	−.250	−.014	.086
Number of nighttime sleep episodes, infant (diary)	.015	−.183	−.063	−.072
Daytime variables
Fatigue Scale (EFSS)	.536	.542	.417	.506
Sleepiness Scale (EFSS)	.304	.484	.389	.300
Nonrefreshing Sleep (SSC)	.523	.450	.210	.354
Sleep daytime variables
Daytime TST, mother (diary)	.148	.026	.085	−.144
Daytime TST, infant (diary)	−.126	−.151	−.002	−.022
Number of daytime sleep episodes, mother (diary)	−.033	−.128	.091	−.186
Number of daytime sleep episodes, infant (diary)	.075	.009	−.059	.135

Note. Significant correlation coefficients are bolded; ; ; ; .