Table 2.
Baseline clinical and socio-demographic characteristics of the study participants by sleep duration categories
| Variables | Short (< 6 h) 730 (24.95%) | Medium (6–8 h) 2041 (69.75%) | Long (>8 h) 155(5.30%) | P value | |
|---|---|---|---|---|---|
| Age (years) | 53.69 ± 12.51 | 54.37 ± 12.82 | 58.31 ± 13.6 | 0.0002 | |
| PEA | 0.163 ± 0.08 | 0.178 ± 0.09 | 0.173 ± 0.08 | 0.0006 | |
| Annual household income | |||||
| <$20,000 | 26.84% | 25.22% | 51.52% | <.0001 | |
| $20,000–50,000 | 38.78% | 37.62% | 28.03% | ||
| >$50,000 | 34.38% | 37.16% | 20.45% | ||
| Smoking status | |||||
| Former/never smoker | 83.33% | 87.77% | 81.94% | 0.003 | |
| Current smoker | 16.67% | 12.23% | 18.06% | ||
| alcohol consumption | |||||
| Former/never drinker | 49.73% | 51.94% | 66.45% | 0.007 | |
| Current drinker | 50.27% | 48.06% | 33.55% | ||
| Leptin (ng/mL) | 29.61 ± 27.02 | 27.78 ± 23.51 | 29.49 ± 24.23 | 0.185 | |
| Adiponectin (μg/mL) | 5.16 ± 4.22 | 5.30 ± 4.16 | 5.63 ± 4.57 | 0.42 | |
| BMI (kg/m2) | 32.61 ± 7.75 | 31.88 ± 7.34 | 31.38 ± 7.19 | 0.03 | |
| Normal-weight (BMI < 25) | 12.88% | 13.42% | 16.77% | ||
| Overweight/Obese (BMI ≥ 25) | 87.12% | 86.58% | 83.23% | ||
Data presented as mean ± SD or as percentages.. P-values are calculated based on one-way ANOVA for continuous variables and X2 for categorical variables. BMI: body mass index; PEA; proportion of global European ancestry