Table 1.
Relationships between sleep duration, covariates, and hypercholesterolemia
| Hypercholesterolemia |
Average Sleep Duration in Hours | ||||
|---|---|---|---|---|---|
| Baseline Characteristics | Yes | No | |||
| n (%) | 618 (4%) | 13,639 (96%) | |||
| Mean (SE) | Mean (SE) | Wald F (P-value) | |||
| Average sleep duration (h) | 7.53 (0.08) | 7.77 (0.07) | 11.55 (P = 0.0009) | ||
| Age-female | 15.9 (0.16) | 15.8 (0.13) | 1.55 (P = 0.2159) | ||
| Age-male | 16.3 (0.17) | 15.9 (0.14) | 5.58 (P = 0.0197) | ||
| Percentile BMI (kg/m2) for age, female | 63.4 (2.11) | 58.4 (2.12) | 5.44 (P = 0.0213) | ||
| Percentile BMI (kg/m2) for age, male | 72.6 (2.35) | 60.1 (2.36) | 28.16 (P < 0.0001) | ||
| Emotional distress | 9.8 (0.39) | 8.7 (0.37) | 9.30 (P = 0.0028) | ||
| Sex | n (Column %) | n (Column %) | X2 (P-value) | Mean (SE) | Wald F (P-value) |
| Female | 336 (54%) | 6,982 (51%) | 1.05 (P = 0.3071) | 7.72 (0.04) | 2.54 (P = 0.0124) |
| Male | 282 (46%) | 6,656 (49%) | 7.81 (0.03) | ||
| Age(WaveI) | |||||
| 11-13 | 18 (3%) | 558 (4%) | 8.28 (P = 0.0885) | 8.41 (0.12) | 97.39 (P < 0.0001) |
| 14-15 | 162 (26%) | 4,427 (32%) | 8.14 (0.11) | ||
| 16-17 | 241 (39%) | 4,558 (33%) | 7.67 (0.10) | ||
| 18-19 | 188 (30%) | 3,837 (28%) | 7.37 (0.11) | ||
| 20-21 | 9 (1%) | 258 (2%) | 7.27 (0.11) | ||
| Race/Ethnicity | |||||
| Caucasian | 436 (71%) | 9,102 (67%) | 8.30 (P = 0.0444) | 7.81 (0.07) | 6.55 (P = 0.0004) |
| African American | 62 (10%) | 2,042 (15%) | 7.59 (0.07) | ||
| Hispanic | 35 (6%) | 603 (4%) | 7.90 (0.11) | ||
| Other | 86 (14%) | 1,892 (14%) | 7.64 (0.07) | ||
| Alcohol Consumption | |||||
| 0 grams per day | 430 (69%) | 9,692 (71%) | 0.33 (P = 0.8471) | 7.87 (0.08) | 50.09 (P < 0.0001) |
| > 0 and < 28 grams per day | 152 (25%) | 3,226 (24%) | 7.53 (0.08) | ||
| > 28 grams per day | 37 (6%) | 720 (5%) | 7.35 (0.08) | ||
| Cigarettes Smoked Per Day | |||||
| 0 | 457 (74%) | 10,037 (74%) | 0.02 (P = 0.9916) | 7.84 (0.11) | 24.35 (P < 0.0001) |
| 1 to 19 | 143 (23%) | 3,171 (23%) | 7.60 (0.11) | ||
| ≥ 20 | 19 (3%) | 431 (3%) | 7.26 (0.11) | ||
| Physical Activity | |||||
| Low – 0 to 2 times/week | 222 (36%) | 4,363 (32%) | 5.20 (P = 0.0783) | 7.65 (0.03) | 17.83 (P < 0.0001) |
| Medium – 3 to 4 times/week | 210 (34%) | 4,498 (33%) | 7.77 (0.03) | ||
| High – ≥ 5 times/week | 187 (30%) | 4,778 (35%) | 7.86 (0.04) | ||
| Physical Inactivity | |||||
| Low – 0 to 10 h/week | 198 (32%) | 4,640 (34%) | 4.04 (P = 0.1369) | 7.64 (0.04) | 16.06 (P < 0.0001) |
| Medium – 11 to 24 h/week | 240 (39%) | 4,586 (34%) | 7.82 (0.03) | ||
| High – ≥ 25 h/week | 181 (29%) | 4,413 (32%) | 7.83 (0.04) | ||
| Body weight | |||||
| Underweight | 35 (6%) | 815 (6%) | 31.47 (P < 0.0001) | 7.93 (0.08) | 3.40 (P = 0.0198) |
| Normal weight | 348 (56%) | 9,522 (70%) | 7.75 (0.05) | ||
| At-risk for overweight | 111 (18%) | 1,914 (14%) | 7.79 (0.05) | ||
| Overweight | 125 (20%) | 1,387 (10%) | 7.68 (0.05) | ||