Table 2.
Model Statistic for Pittsburgh Sleep Quality Index (PSQI) Global Score Associated with Suicidal Ideation (N=641)
| PSQI global score | PHQ-9 Suicidal Ideation |
Unadjusteda OR (95% CI) | Adjusted b OR (95% CI) | Adjusted c OR (95% CI) | |||
|---|---|---|---|---|---|---|---|
| No (N = 533) |
Yes (N = 108) |
||||||
| n | % | n | % | ||||
| Overall sleep quality | |||||||
| Good (PSQI global score ≤ 5) | 401 | 75.2 | 57 | 52.8 | Reference | Reference | Reference |
| Poor (PSQI global score > 5) | 132 | 24.8 | 51 | 47.2 | 2.72 (1.78–4.16) | 2.19 (1.40–3.42) | 1.67 (1.02–2.71) |
| PSQI global score | |||||||
| Lowest tertile (0–2) | 153 | 28.7 | 6 | 5.6 | Reference | Reference | Reference |
| Middle tertile (3–5) | 248 | 46.5 | 51 | 47.2 | 5.24 (2.20–12.51) | 4.96 (2.06–11.94) | 4.56 (1.89–11.01) |
| Highest tertile (≥ 6) | 132 | 24.8 | 51 | 47.2 | 9.85 (4.10–23.69) | 7.71 (3.16–18.83) | 5.76 (2.29–14.50) |
| P-value for trend | < 0.0001 | < 0.0001 | 0.0003 | ||||
| PSQI global score (continuous)d | 4.2 ± 2.5 | 5.9 ± 2.8 | 1.26 (1.17–1.36) | 1.22 (1.13–1.32) | 1.18 (1.08–1.28) | ||
Abbreviations: OR, odds ratio; CI, confidence interval
a
: Unadjusted model
b
: Adjusted for age (years), parity (nulliparous vs. multiparous), access to basics (hard vs. not very hard), and lifetime intimate partner violence (any physical or sexual abuse vs. no abuse)
c
: Further adjusted for depression status (yes [PHQ-8 ≥ 10] vs. no [PHQ-8 < 10])
d
: Mean ± SD (standard deviation)