Table 2.
Association between factors measured at baseline and time to first hospitalisation with pneumonia (Hazard risk ratio (HRR) (95% confidence interval))
| Crude HRR (95% CI) | Adjusted HRRa (95% CI) | |
|---|---|---|
| Women | 1.16 (0.83–1.60) | 1.34 (0.88–2.05) |
| Age per 10 years | 1.52 (1.22–1.89) | 1.29 (0.97–1.73) |
| BMI | ||
| < 20 | 3.80 (2.16–6.67) | 2.74 (1.41–5.36) |
| 20–25 | 1 | 1 |
| 25–30 | 1.49 (0.97–2.30) | 1.53 (0.95–2.48) |
| > 30 | 2.55 (1.46–4.45) | 2.54 (1.39–4.67) |
| Smoking | ||
| Never | 1 | 1 |
| Ex | 0.73 (0.43–1.24) | 0.83 (0.48–1.45) |
| Current | 1.95 (1.30–2.95) | 1.93 (1.22–3.06) |
| Passive smokinga | 1.50 (0.47–4.80) | 1.27 (0.31–5.30) |
| Asthma | 3.23 (2.07–5.02) | 3.35 (1.97–5.70) |
| Nasal allergy | 1.17 (0.79–1.75) | 0.88 (0.54–1.42) |
| Hypertension | 1.53 (0.92–2.86) | 1.14 (0.56–2.33) |
| Heart disease | 3.16 (1.25–7.97) | 1.48 (0.46–4.79) |
| Diabetes | 1.57 (0.50–4.94) | 0.42 (0.06–3.07) |
| Habitual snoring | 1.15 (0.72–1.83) | 0.80 (0.47–1.37) |
| Gastroesophageal reflux | 1.26 (0.67–2.35) | 0.96 (0.49–1.90) |
aAdjusted for all the variables in the table and centre