Table 1.
Baseline Characteristics of 83,377 Men and Women With No Heart Disease, Stroke, or Cancer at Baseline and Throughout Follow-up, by Sleep Duration Category, National Institutes of Health-AARP Diet and Health Study, 1995–1996
| Characteristic | Sleep Duration, hours |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Men (n = 43,176) |
Women (n = 40,201) |
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| <5 (n = 804) |
5–6 (n = 13,015) |
7–8 (n = 28,159) |
≥9 (n = 1,198) |
<5 (n = 1,019) |
5–6 (n = 12,845) |
7–8 (n = 25,071) |
≥9 (n = 1,266) |
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| Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | |
| Baseline body mass indexa | ||||||||||||||||
| 15–18.4 | 0.3 | 0.4 | 0.5 | 0.5 | 1.2 | 1.1 | 1.2 | 1.0 | ||||||||
| 18.5–24.9 | 26.9 | 29.1 | 34.2 | 33.8 | 32.2 | 43.1 | 48.1 | 44.3 | ||||||||
| 25–29.9 | 44.3 | 49.3 | 48.7 | 47.3 | 34.8 | 33.0 | 32.3 | 31.0 | ||||||||
| 30–34.9 | 19.5 | 16.5 | 13.4 | 15.2 | 18.3 | 14.8 | 12.6 | 14.9 | ||||||||
| 35–50 | 9.1 | 4.7 | 3.2 | 3.3 | 13.5 | 7.9 | 5.9 | 8.8 | ||||||||
| Weight change, kg | 1.0 (8.3) | 0.5 (7.3) | 0.3 (6.5) | 0.3 (6.7) | 1.1 (8.4) | 1.2 (7.3) | 1.0 (6.7) | 0.4 (7.4) | ||||||||
| ≥5-kg weight gain | 23.4 | 18.7 | 15.6 | 17.1 | 26.6 | 22.8 | 19.9 | 19.5 | ||||||||
| Age at baseline, years | ||||||||||||||||
| 50–<55 | 20.3 | 19.2 | 15.1 | 10.0 | 17.7 | 17.2 | 16.4 | 15.9 | ||||||||
| 55–<60 | 30.6 | 29.0 | 25.9 | 20.5 | 25.9 | 26.6 | 26.0 | 23.1 | ||||||||
| 60–<65 | 25.9 | 27.0 | 28.5 | 31.7 | 26.9 | 27.5 | 28.7 | 29.6 | ||||||||
| 65–71 | 23.3 | 24.9 | 30.5 | 37.8 | 39.5 | 28.8 | 28.9 | 31.4 | ||||||||
| White, non-Hispanic | 85.0 | 90.3 | 94.9 | 95.7 | 84.3 | 88.4 | 94.2 | 94.7 | ||||||||
| College and postcollege education | 38.1 | 50.4 | 56.4 | 53.6 | 22.9 | 32.1 | 37.7 | 38.9 | ||||||||
| Married | 79.2 | 84.1 | 86.9 | 82.4 | 35.8 | 41.9 | 49.9 | 53.2 | ||||||||
| Self-reported excellent health | 17.0 | 22.4 | 26.7 | 23.0 | 14.9 | 19.8 | 24.2 | 20.9 | ||||||||
| Current smoker | 11.1 | 9.0 | 7.1 | 7.1 | 11.1 | 12.1 | 10.2 | 8.4 | ||||||||
| Physical activity ≥5 times/week | 21.7 | 21.0 | 22.4 | 21.2 | 16.7 | 17.7 | 17.8 | 16.8 | ||||||||
| Sitting <3 hour/day | 23.5 | 18.7 | 17.2 | 17.7 | 25.5 | 22.2 | 20.3 | 20.5 | ||||||||
| Current MHT use | N/A | N/A | N/A | N/A | 36.6 | 44.6 | 49.3 | 50.9 | ||||||||
| Coffee intake, g/day | 826 (752) | 852 (679) | 812 (637) | 758 (660) | 692 (691) | 705 (621) | 703 (585) | 623 (587) | ||||||||
| Alcohol intake, g/day | 18.8 (50.2) | 16.3 (41.5) | 18.0 (39.3) | 27.5 (51.6) | 4.5 (15.6) | 5.5 (17.1) | 6.5 (16.3) | 9.5 (22.4) | ||||||||
| Fruits and vegetables, servings/day | 7.7 (5.4) | 7.1 (4.2) | 7.0 (3.8) | 6.8 (4.1) | 7.6 (5.4) | 6.9 (4.1) | 6.6 (3.7) | 6.7 (4.1) | ||||||||
| Whole grains, servings/ day | 1.3 (1.1) | 1.3 (1.0) | 1.3 (1.0) | 1.3 (1.0) | 1.1 (0.9) | 1.1 (0.8) | 1.1 (0.8) | 1.1 (0.8) | ||||||||
| Total fat, g/day | 76.5 (48.9) | 69.8 (42.1) | 68.3 (34.3) | 72.1 (36.0) | 57.3 (41.5) | 53.3 (30.7) | 50.9 (26.6) | 54.7 (33.2) | ||||||||
| Total energy, kcal/day | 2,235 (1218) | 2,046 (997) | 2,017 (825) | 2,138 (901) | 1,699 (991) | 1,585 (711) | 1,535 (618) | 1,629 (762) | ||||||||
Abbreviations: MHT, menopausal hormonal therapy; N/A, not applicable; SD, standard deviation.
a Weight (kg)/height (m)2.