Table 2.

Model Statistic for Pittsburgh Sleep Quality Index (PSQI) Global Score Associated with Suicidal Ideation (N=1,298)

PSQI global score	PHQ-9 Suicidal Ideation				Unadjusted OR (95% CI)	Adjusteda OR (95% CI)	Adjustedb OR (95% CI)
	No (N = 1,188)		Yes (N = 110)
	n	%	n	%
Overall sleep quality
Good (PSQI global score ≤5)	1018	85.7	61	55.5	Reference	Reference	Reference
Poor (PSQI global score > 5)	170	14.3	49	44.5	4.81 (3.19–7.24)	4.47 (2.94–6.78)	2.81 (1.78–4.45)
PSQI global score
Lowest tertile (0–2)	368	31.0	15	13.6	Reference	Reference	Reference
Middle tertile (3–4)	522	43.9	32	29.1	1.50 (0.80–2.82)	1.41 (0.75–2.66)	1.25 (0.66–2.37)
Highest tertile (≥5)	298	25.1	63	57.3	5.19 (2.89–9.30)	4.63 (2.57–8.35)	2.82 (1.51–5.27)
P-value for trend					< 0.001	< 0.001	< 0.001
PSQI global score (continuous)c	3.6 ± 1.8		5.2 ± 2.3		1.42 (1.30, 1.56)	1.41 (1.29, 1.54)	1.28 (1.15, 1.41)

Abbreviations: OR, odds ratio; CI, confidence interval

^a: Adjusted for age (years), parity (nulliparous vs. multiparous), access to basics (hard vs. not very hard), education (years) and unplanned pregnancy.

^b: Further adjusted for antepartum depression status (yes [PHQ-8 ≥ 10] vs. no [PHQ-8 < 10])

^c: Mean ± SD (standard deviation)