Table 5.
Stability of Sleep Quality Between 1975 and 1981 and Total Mortality in 1982–2003: Hazard Ratios (95% Confidence Intervals) for Each Combination of Self-Reported Sleep Quality. Percentage of Subjects in Each Sleep Quality Category Combination Given for Men and Women
| Sleep Quality: Sleeping |
Percentage |
All-Cause Mortality 1982–2003 |
|||||
|---|---|---|---|---|---|---|---|
| 1975 | 1981 | Men | Women | Age-adjusted (men) N = 10140 | Age-adjusted (women) N = 11128 | Fully-adjusted model (men) N = 9529 | Fully-adjusted model (women) N = 10265 |
| Well | Well | 31.3 | 28.9 | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) |
| Fairly well | Well | 11.4 | 11.6 | 1.26 (1.07, 1.48) | 1.11 (0.92, 1.34) | 1.15 (0.96, 1.38) | 1.04 (0.85, 1.28) |
| Fairly poorly/poorly | Well | 0.6 | 0.7 | 1.87 (1.24, 2.82) | 1.40 (0.90, 2.17) | 1.08 (0.71, 1.63) | 1.03 (0.62, 1.71) |
| Well | Fairly well | 14.7 | 14.6 | 1.13 (0.97, 1.32) | 0.99 (0.82, 1.19) | 1.06 (0.90, 1.26) | 0.96 (0.78, 1.18) |
| Fairly well | Fairly well | 30.1 | 31.5 | 1.23 (1.09, 1.39) | 0.97 (0.84, 1.12) | 1.08 (0.94, 1.24) | 0.92 (0.78, 1.09) |
| Fairly poorly/poorly | Fairly well | 2.6 | 3.2 | 1.98 (1.58, 2.49) | 1.22 (0.97, 1.53) | 1.34 (1.03, 1.74) | 1.01 (0.78, 1.31) |
| Well | Fairly poorly/poorly | 1.1 | 0.8 | 1.72 (1.08, 2.73) | 0.89 (0.54, 1.46) | 1.12 (0.69, 1.81) | 0.54 (0.30, 0.99) |
| Fairly well | Fairly poorly/poorly | 4.1 | 4.6 | 1.76 (1.43, 2.16) | 1.24 (1.02, 1.52) | 1.19 (0.93, 1.51) | 0.99 (0.77, 1.26) |
| Fairly poorly/poorly | Fairly poorly/poorly | 4.1 | 4.1 | 1.73 (1.43, 2.09) | 1.18 (0.98, 1.42) | 1.10 (0.87, 1.39) | 0.99 (0.77, 1.27) |
Covariates measured in 1981 (in addition to age) in fully-adjusted model: education, marital status, working status, social class, BMI, smoking status, binge drinking, grams of alcohol consumed daily, conditioning physical activity, life satisfaction, sleep length, and use of hypnotics and/or tranquilizers.