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

Table 4

Correlations of daytime variables with mothers’ sleep characteristics.

	2 months			6 months
	Fatigue (ESFS)	Sleepiness (ESFS)	Nonrefreshing sleep (SSC)	Fatigue (ESFS)	Sleepiness (ESFS)	Nonrefreshing sleep (SSC)
Nighttime variables
Insomnia Severity Scale (ISI)	.610	.476	.587	.419	.396	.761
Difficulty initiating or maintaining sleep (DIMS)
Sleep onset problem (SSC)	.166	.059	.317	.251	.370	.553
Sleep maintenance problem (SSC)	−.046	.213	.061	.214	.310	.595
Waking too early (SSC)	.016	.053	−.069	−.077	−.168	.352
Nighttime TST, mother (diary)	.063	.026	.056	−.203	−.149	−.463
Number of nighttime sleep episodes, mother (diary)	−.099	−.127	−.032	.003	−.247	.267
Daytime variables
Daytime TST, mother (diary)	−.042	−.202	−.056	−.013	.071	.075
Number of daytime sleep episodes, mother (diary)	−.104	−.164	−.117	.044	.059	.096

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