Table 1.
Characteristics of participants that had not or had been hospitalised for pneumonia during the period 2000–2010 (% and mean ± SD)
| No hospitalisation (n = 7168) | At least one hospitalisation (n = 119) | p-value | |
|---|---|---|---|
| Women | 3738 (52.2) | 73 (61.3) | 0.047 |
| Age | 40.5 ± 7.3 | 43.2 ± 7.6 | < 0.001 |
| BMI | < 0.001 | ||
| < 20 | 387 (5.4) | 18 (15.4) | |
| 20–25 | 3681 (51.8) | 41 (35.0) | |
| 25–30 | 2450 (34.5) | 41 (35.0) | |
| > 30 | 582 (8.2) | 17 (14.5) | |
| Smoking | < 0.001 | ||
| Never | 3620 (51.8) | 48 (40.7) | |
| Ex | 1828 (26.1) | 20 (17.0) | |
| Current | 1544 (22.1) | 50 (42.4) | |
| Passive smokinga | 178 (3.3) | 3 (4.5) | 0.58 |
| Asthma | 561 (7.8) | 26 (21.8) | < 0.001 |
| Nasal allergy | 1728 (24.5) | 34 (29.7) | 0.22 |
| Hypertension | 459 (6.5) | 11 (9.3) | 0.22 |
| Heart disease | 73 (1.0) | 5 (4.2) | 0.001 |
| Diabetes | 131 (1.8) | 3 (2.6) | 0.56 |
| Habitual snoring | 1385 (20.0) | 23 (20.4) | 0.93 |
| Gastroesophageal reflux | 618 (8.8) | 11 (9.7) | 0.72 |
aOnly calculated in never and ex-smokers