Table 3.

Associations between Sleep Quality, Depressive Symptoms, and Suicidal Ideation (N=1298)

Sleep quality a and depressive symptomsb	Suicidal ideation				Unadjusted OR (95% CI)	Adjustedc OR (95% CI)
	No (N = 1,188)		Yes (N = 110)
	n	%	n	%
Good sleep quality, no depression	968	81.5	44	40.0	Reference	Reference
Good sleep quality, depression	50	4.2	17	15.5	7.48 (3.99–14.01)	7.28 (3.86–13.75)
Poor sleep quality, no depression	131	11.0	22	20.0	3.69 (2.15–6.36)	3.50 (2.02–6.06)
Poor sleep quality, depression	39	3.3	27	24.5	15.23 (8.56–27.10)	13.56 (7.53–24.41)
P-value for multiplicative interaction					0.20	0.18

^a: Good sleep quality was defined as the PSQI global score ≤5; poor sleep quality was defined as the PSQI global score >5.

^b: No depression was defined as the Patient Health Questionnare-8 (PHQ-8) score < 10; depression was defined as the PHQ - 8 score ≥ 10.

^c: Adjusted for age (years), parity (nulliparous vs. multiparous), access to basics (hard vs. not very hard), education (years), and unplanned pregnancy; odds ratio was calculated by including an interaction term between sleep quality and antepartum depression in the model.