Table 2.
Least squares means (95% confidence intervals) for anthropometric measures and circulating levels of triglycerides and cholesterol according to sleep duration in the FiLWHEL study
| Variable | LS means (95% CIs) (hr/day) | P trend | Post hoc * | |||
|---|---|---|---|---|---|---|
| < 5 | 5–6 | 7–8 | > 8 | |||
| BMI (kg/m2) | ||||||
| Multivariate adjusted† | 24.21 (23.13–25.34) | 24.80 (23.94–25.69) | 24.09 (23.26–24.96) | 24.13 (22.75–25.60) | 0.442 | |
| Waist circumference (cm) | ||||||
| Multivariate adjusted† | 81.23 (78.62–83.93) | 81.65 (79.61–83.74) | 80.69 (78.68–82.75) | 82.88 (79.44–86.47) | 0.941 | |
| Triglycerides (mg/dL) | ||||||
| Multivariate adjusted† | 81.74 (71.43–93.54) | 85.15 (76.65–94.59) | 86.33 (77.84–95.75) | 105.22 (88.07–125.71) | 0.049 | a-d, b-d, c-d |
| Multivariate adjusted‡ | 81.75 (71.68–93.25) | 83.59 (75.48–92.56) | 86.74 (78.49–95.86) | 102.26 (86.12–121.42) | 0.040 | a-d, b-d |
| Total cholesterol (mg/dL) | ||||||
| Multivariate adjusted† | 174.52 (165.02–184.57) | 180.50 (172.79–188.55) | 182.51 (174.83–190.53) | 190.16 (176.61–204.74) | 0.042 | a-d |
| Multivariate adjusted‡ | 174.67 (165.10–184.78) | 179.69 (172.02–187.71) | 182.51 (174.87–190.48) | 188.59 (175.23–202.98) | 0.049 | |
| HDL-C (mg/dL) | ||||||
| Multivariate adjusted† | 55.59 (51.87–59.58) | 55.60 (52.68–58.69) | 55.79 (52.90–58.84) | 53.40 (48.73–58.52) | 0.675 | |
| Multivariate adjusted‡ | 55.69 (52.01–59.64) | 56.13 (53.23–59.19) | 55.73 (52.91–58.71) | 54.16 (49.53–59.22) | 0.648 | |
| LDL-C (mg/dL) | ||||||
| Multivariate adjusted† | 97.34 (88.80–106.71) | 100.69 (93.73–108.18) | 104.47 (97.35–112.10) | 109.43 (96.94–123.54) | 0.047 | |
| Multivariate adjusted‡ | 97.41 (88.88–106.75) | 99.79 (92.95–107.13) | 104.45 (97.43–111.98) | 107.62 (95.49–121.29) | 0.053 | |
*Tukey’s multiple comparison analyses assessed significant pairwise differences between < 5 (a), 5–6 (b), 7–8 (c), > 8 hr/day (d) at the P < 0.05 level; †Models were adjusted for age (years, continuous), education (associate vocational or less, college graduate or more), vigorous activity (yes, no), smoking (never, ever), health-related quality of life (continuous), coffee intake (< 0.5, 0.5–< 2, ≥ 2 cups/day), carbohydrate intake (g/day, continuous), and energy intake (kcal/day, continuous); ‡Models were additionally adjusted for BMI (≤ 23, 23–≤ 25, > 25 kg/m2).
FiLWHEL, Filipino Women’s Diet and Health Study; LS, least square; CI, confidence interval; BMI, body mass index; HDL-C, high-density lipoprotein cholesterol; LDL-C, low-density lipoprotein cholesterol.