Table 2.

Sleep and psychosocial measures across pregnancy

	Time 1: 14-16 Weeks				Time 2: 24-26 Weeks				Time 3: 30-32 Weeks
	Preterm		Term		Preterm		Term		Preterm		Term
	M	SD	M	SD	M	SD	M	SD	M	SD	M	SD
PSQI Total*	7.79	4.88	4.97	2.68	6.20	3.95	5.03	2.61	7.79	4.13	5.26	2.73
PSS**	28.7	9.1	26.5	7.2	27.1	8.8	24.9	7.2	31.6	12.2	25.1	7.5
CESD#	15.9	3.2	17.1	3.3	16.6	2.7	16.5	2.7	17.8	3.7	16.6	2.9
STAI^	41.1	16.0	36.1	10.7	42.0	15.0	35.5	11.2	47.5	17.9	34.5	10.9

PSQI, Pittsburgh Sleep Quality Index; STAI, State-Trait Anxiety Inventory; PSS, Perceived Stress Scale; CES-D, Center for Epidemiologic Studies-Depression Scale with the sleep item removed.

^*PSQI scores were significantly different between Preterm and Term deliveries at Time 1 Mann-Whitney U test, P-value = 0.05 and Time 3 P-value = 0.03.

^**PSS scores were significantly different between Preterm and Term deliveries at Time 3 Mann-Whitney U test, P-value = 0.04.

^#CES-D scores were significantly different between Preterm and Term deliveries at Time 3 Mann-Whitney U test, P-value = 0.02.

^{^}STAI scores were significantly different between Preterm and Term deliveries at Time 3 Mann-Whitney U test, P-value = 0.002.