Table 2.
Adjusted multinomial logistic regression odds ratios (95% CI) of trajectory of sleep duration by chronotype, with persistent 7-h sleep duration as a reference category
| Chronotype | Persistent sleep duration of 5 h | Persistent sleep duration of 6 h | Persistent sleep duration of 8 h | Increased sleep duration from 6 to 7.5 h | Decreased sleep duration from 8 to 6 h |
|---|---|---|---|---|---|
| Morning type | |||||
| Age adjusted | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| MV* | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Evening type | |||||
| Age adjusted | 1.43 (1.28, 1.60) | 1.33 (1.27, 1.40) | 1.00 (0.95, 1.04) | 1.13 (1.04, 1.22) | 1.41 (1.31, 1.52) |
| MV* | 1.26 (1.13, 1.42) | 1.27 (1.21, 1.33) | 0.99 (0.94, 1.03) | 1.05 (0.97, 1.13) | 1.34 (1.24, 1.44) |
| Neither | |||||
| Age adjusted | 1.61 (1.29, 2.02) | 1.33 (1.21, 1.47) | 1.07 (0.97, 1.18) | 1.02 (0.85, 1.21) | 1.22 (1.04, 1.44) |
| MV* | 1.39 (1.10, 1.74) | 1.27 (1.15, 1.41) | 1.05 (0.96, 1.16) | 0.96 (0.81, 1.14) | 1.17 (1.00, 1.39) |
Adjusted for age (continuous), race (nonwhite or white), family history of diabetes, menopausal status (pre- or postmenopausal), postmenopausal hormone use (never, past, or current), smoking status (never, past, or current), alcohol intake (0, 0 to <5, 5 to <15, 15 to <30, or ≥30 g/day), AHEI-2010 dietary score (in quintiles), physical activity (<3, 3 to <9, 9 to <18, 18 to <27, or ≥27 MET h/week), marital status (yes or no), parity (nulliparous, 1, 2, or ≥3), physical exam (yes or no), duration of rotating night shift work (years), development of hypertension (yes or no), hypercholesterolemia (yes or no), depression (yes or no), sleep apnea (yes or no), and BMI (<20, 20 to <25, 25 to <30, 30 to <35, 35 to <40, or ≥40 kg/m2). All the covariates were based on baseline information in 2009.