. Author manuscript; available in PMC: 2019 Jun 10.

Published in final edited form as: J Obstet Gynecol Neonatal Nurs. 2009 Nov-Dec;38(6):676–685. doi: 10.1111/j.1552-6909.2009.01064.x

Table 4:

Correlations Between Sleep, Light Exposure and Well-Being (N = 20)

	NRS-MF	NRS-EF	EPDS	SF36PCS	SF36MCS	12 hours’ light exposure
GSDS	.52^*	.51^*	.40	−.40	−.53^*	− 0.31
Sleep quality	.37	.54^*	.38	−.14	−.55^*	− 0.07
Daytime function	.55^*	.52^*	.29	−.45^*	−.48^*	− 0.36
TST	.12	.06	.03	−.28	.02	− 0.51^*
WASO	−.24	−.18	−.26	−.24	.20	− 0.20
Sleep debt	.48^*	.30	.15	−.07	−.17	− 0.33
12 hours’ light exposure	−.40	−.20	−.19	.65^**	.23	1.00

Note. EPDS 5 Edinburgh Postnatal Depression Scale, GSDS 5 General Sleep Disturbance, NRS-EF 5 Numerical Rating Scale-Evening Fatigue, NRS-MF 5 Numerical Rating Scale-Morning Fatigue, SF36MCS 5 Medical Outcomes Short From-36 version2-Mental Health Summary, SF36PCS 5 Medical Outcomes Short Form-36 version 2-Physical Component Summary, sleep debt 5 total sleep time reported by mothers to feel refreshed minus total sleep time measured by actigraph, TST 5 nighttime total sleep time monitored from wrist actigraph, WASO 5 wake after sleep onset in minutes.

p<.05.

^**

p<.01.