Table 3.
Age-adjusted rate ratios (95% confidence intervals) of incident pneumonia by self-reported sleep duration
| Hours of Sleep per Day |
P-value for interaction | |||||
|---|---|---|---|---|---|---|
| ≤ 5 | 6 | 7 | 8 | ≥ 9 | ||
| Age < 45 y | 2.04 (1.32-3.16) | 1.49 (1.11-2.02) | 1.26 (0.96-1.66) | 1.00 | 1.77 (1.16-2.73) | 0.69 |
| Age ≥ 45 y | 1.52 (1.08-2.14) | 1.17 (0.92-1.49) | 1.08 (0.87-1.35) | 1.00 | 1.30 (0.88-1.91) | |
| BMI < 25 kg/m2 | 1.31 (0.83-2.06) | 1.38 (1.05-1.80) | 1.12 (0.88-1.43) | 1.00 | 1.47 (0.96-2.23) | 0.45 |
| BMI ≥ 25 kg/m2 | 1.88 (1.34-2.65) | 1.18 (0.91-1.54) | 1.18 (0.92-1.50) | 1.00 | 1.47 (0.99-2.17) | |
| Not current smoker | 1.63 (1.21-2.19) | 1.25 (1.02-1.53) | 1.11 (0.92-1.33) | 1.00 | 1.33 (0.97-1.83) | 0.38 |
| Current smoker | 1.95 (0.96-3.93) | 1.57 (0.88-2.78) | 1.60 (0.93-2.77) | 1.00 | 3.19 (1.51-6.71) | |
| Inadequate sleep | 1.52 (1.04-2.24) | 1.10 (0.78-1.54) | 1.14 (0.82-1.59) | 1.00 | 1.37 (0.73-2.56) | 0.09 |
| Adequate sleep | 0.20 (0.03-1.40) | 0.98 (0.68-1.39) | 0.97 (0.77-1.20) | 1.00 | 1.55 (1.12-2.14) | |