Table 1 Patient characteristics
From: Serum p53 antibody detection in patients with impaired lung function
| NORMAL LFT* | IMPAIRED LFT | |
|---|---|---|
| 399 | 276 | |
| Age | ||
| Median (range), years | 56 (26–93) | 62 (24–83) |
| Gender | ||
| Male | 214 (54%) | 169 (61%) |
| Female | 185 (46%) | 107 (39%) |
| Smoking habit | ||
| Non-smokers | 42 (11%) | 44 (16%) |
| Current smokers | 269 (67%) | 152 (55%) |
| Ex-smokers | 88 (22%) | 80 (29%) |
| No. of cigarettes smoked per day | ||
| ≤ 20 | 241 (60%) | 129 (47%) |
| > 20 | 114 (29%) | 102 (37%) |
| Missing | 2 | 1 |
| Packs-year | ||
| ≤ 40 | 239 (60%) | 117 (42%) |
| > 40 | 116 (29%) | 113 (41%) |
| Missing | 2 | 2 |
| Years since quitting | ||
| ≤ 10 | 35 (9%) | 37 (13%) |
| >10 | 29 (7%) | 25 (9%) |
| Missing | 24 | 18 |
| LFT impairment (obstructive or restrictive) | ||
| Mild | 152 (55%) | |
| Moderate | 73 (26%) | |
| Severe | 51 (18%) |