Table 1.
Selected Demographic Characteristics in 1981 of the Entire Cohort with Complete Sleep Behavior Data. Percentage of Those in the Specified Category of Potential Confounder; Number of Men/Women Given in Column Header
| Sleep Length* |
Sleep Quality |
Use Of Hypnotics And/or Tranquilizers** |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Short N (m/f) = 1539 / 1500 | Average N (m/f) = 7113 / 7247 | Long N (m/f) = 1488 / 2381 | Sleeping well N(m/f) = 4388 / 4586 | Sleeping fairly well N (m/f) = 4804 / 5486 | Sleeping fairly poorly/poorly N (m/f) = 948 / 1056 | No N (m/f) = 8209 / 8329 | Infrequent N (m/f) = 454 / 776 | Frequent N (m/f) = 261 / 347 | |
| Age | |||||||||
| 24–39 years | 52.1 / 44.7 | 56.8 / 56.4 | 52.8 / 57.3 | 62.7 / 64.5 | 52.3 / 51.4 | 38.3 / 32.0 | 60.9 / 62.3 | 40.8 / 46.4 | 35.3 / 34.3 |
| 40–54 years | 30.2 / 25.3 | 29.5 / 26.3 | 25.6 / 22.3 | 26.0 / 23.2 | 30.7 / 27.0 | 34.4 / 25.9 | 27.7 / 23.7 | 37.9 / 29.1 | 36.8 / 29.1 |
| 55 years or more | 17.7 / 30.1 | 13.7 / 17.3 | 21.6 / 20.5 | 11.3 / 12.3 | 17.0 / 21.6 | 27.3 / 42.1 | 11.4 / 14.0 | 21.4 / 24.5 | 28.0 / 36.6 |
| Married | 70.1 / 58.4 | 74.7 / 68.5 | 68.4 / 66.8 | 74.4 / 66.6 | 72.7 / 67.7 | 69.0 / 62.5 | 73.7 / 69.1 | 73.6 / 63.7 | 58.2 / 47.0 |
| Employed | 82.5 / 76.6 | 87.8 / 85.1 | 75.0 / 76.1 | 89.9 /87.0 | 84.5 / 81.4 | 65.9 / 63.7 | 90.0 / 86.7 | 76.2 / 79.6 | 41.0 / 51.6 |
| Social class: skilled and unskilled workers | 63.3 / 48.9 | 55.7 / 42.2 | 51.1 / 42.6 | 54.1 / 39.6 | 57.3 / 45.0 | 60.0 / 49.3 | 56.0 / 42.3 | 54.2 /37.3 | 45.6 / 43.2 |
| Education: high school or more | 8.2 / 10.8 | 12.8 / 16.4 | 11.8 / 13.0 | 13.8 / 18.9 | 11.1 / 13.1 | 7.9 / 7.4 | 12.9 / 16.7 | 15.2 / 20.5 | 10.3 / 12.2 |
| Current smoker | 47.6 / 24.5 | 35.5 / 19.9 | 30.3 / 16.3 | 35.9 / 21.7 | 35.2 / 18.3 | 43.2 / 18.5 | 36.7 / 20.8 | 42.8 / 21.5 | 40.1 / 26.5 |
| Binge drinker | 47.0 / 10.8 | 41.3 / 8.8 | 37.1 / 8.6 | 37.2 / 8.4 | 43.8 / 9.3 | 50.2 / 10.6 | 42.1 / 9.2 | 48.9 / 13.1 | 38.1 / 12.0 |
| BMI*** ≥25 | 42.0 / 30.9 | 38.1 / 24.5 | 41.7 / 26.5 | 37.5 / 21.1 | 40.1 / 27.4 | 42.8 / 37.8 | 37.3 / 22.3 | 40.7 / 26.1 | 52.5 / 37.9 |
| Sedentary | 15.4 / 15.8 | 11.8 /11.3 | 14.5 /13.2 | 13.3 / 11.9 | 11.3 / 11.7 | 17.6 / 16.8 | 12.5 / 11.8 | 11.7 / 13.0 | 15.3 / 17.6 |
| Low life satisfaction | 23.3 / 23.9 | 14.1 / 14.5 | 18.2 / 16.0 | 9.8 / 10.3 | 17.4 / 17.1 | 39.0 / 36.4 | 13.6 / 13.0 | 30.0 / 28.7 | 46.4 / 43.6 |
| Deceased 1982–2003 | 27.1 / 24.7 | 17.2 / 12.4 | 25.7 / 16.9 | 15.0 / 10.9 | 21.2 / 15.5 | 36.8 / 30.9 | 15.5 / 10.8 | 29.3 / 16.4 | 42.9 / 35.2 |
*
short = <7 hours, average = 7–8 hours, and long = > 8 hours;
**
infrequent use = 1–59 days/year; frequent use = 60 or more days/year;
***
body mass index