Table 2.

Maternal sleep duration, insomnia and mood symptoms

	n	Mean (SD)	%	Range
Sleep duration (min)	1408	484 (63)		180–720
Sleep duration < 6 h	59		4.2
Sleep need (min)	1403	529 (60)
Sleep loss (min)	1398	45 (63)		300–1140
Sleep loss > 2 h	100		7.2	− 240 to  + 600
Insomnia score	1406	1.8 (1.1)		0–5.0
Depression score (CES-D)	1410	5.2 (3.5)		0–23.0
Anxiety score (STAI)	1413	9.0 (2.4)		6–21.0

CES-D Center for Epidemiologic Studies Depression Scale, STAI State-Trait Anxiety Inventory