Table 2.
Descriptive characteristics of 450 lung cancer patients from the population-based case–control Environment and Genetics in Lung cancer Etiology study*
| Characteristic | No. of patients (% of total) |
| Age, y | |
| <60 | 93 (20.7) |
| 60–69 | 181 (40.2) |
| ≥70 | 176 (39.1) |
| Sex | |
| Male | 358 (79.6) |
| Female | 92 (20.4) |
| Area of Italy | |
| Brescia | 72 (16.0) |
| Milano | 268 (59.6) |
| Monza | 54 (12.0) |
| Pavia | 22 (4.9) |
| Varese | 34 (7.6) |
| Education† | |
| None | 27 (6.1) |
| Elementary school | 161 (36.6) |
| Middle school | 131 (29.8) |
| High school (teaching training, job training, college training) | 105 (23.9) |
| University degree (bachelor, master, PhD) | 16 (3.6) |
| Alcohol consumption† | |
| No | 68 (15.7) |
| Yes | 365 (84.3) |
| Marital status† | |
| Married or cohabitating | 356 (82.2) |
| Neither married nor cohabitating | 77 (17.8) |
| Spirometry-based respiratory function† | |
| Normal | 174 (48.3) |
| Mild COPD | 51 (14.2) |
| Moderate COPD | 68 (18.9) |
| Severe and very severe COPD | 17 (4.7) |
| Potentially restrictive disease | 50 (13.9) |
| Stage | |
| IA | 84 (18.7) |
| IB | 126 (28.0) |
| IIA | 14 (3.1) |
| IIB | 97 (21.6) |
| IIIA | 58 (12.9) |
| IIIB | 43 (9.6) |
| IV | 28 (6.2) |
*
COPD = chronic obstructive pulmonary disease.
†
Numbers do not sum to total because of missing values.