Patients n | 192 | 329 |
Age years median (range)/25–75 percentile | 70 (34–87)/61–77 | 70 (43–90)/63.5–79 |
Sex | | |
Female | 153 (79.7) | 259 (78.7) |
Male | 39 (20.3) | 70 (21.3) |
Education | | |
No formal studies | 49 (26.1) | 51 (15.5) |
Primary school | 114 (60.6) | 246 (74.7) |
High school | 13 (6.9) | 19 (5.8) |
University degree | 12 (6.4) | 13 (4.0) |
Have worked in risk occupations for lung cancer# | | |
No | 163 (87.2) | 281 (87.3) |
Yes | 24 (12.8) | 41 (12.7) |
Participant's habitat | | |
Urban | 77 (40.5) | 74 (22.6) |
Rural | 113 (59.5) | 254 (77.4) |
Residential radon exposure Bq·m−3 | | |
≤100 | 36 (20.3) | 73 (26.9) |
101–147 | 24 (13.6) | 61 (22.4) |
148–199 | 32 (18.1) | 58 (21.3) |
≥200 | 85 (48.0) | 80 (29.4) |
Years living in the measured dwelling | | |
median (25–75 percentiles) | 30 (17–44) | 36 (20–52) |
Exposure to ETS at home in the last 20 years | | |
Yes | 81 (42.2) | 148 (45.1) |
No | 111 (57.8) | 180 (54.9) |
Histological types | | |
Adenocarcinoma | 148 (77.5) | |
Squamous cell carcinoma | 19 (10.0) | |
Small cell carcinoma | 12 (6.3) | |
Large cell carcinoma | 6 (3.1) | |
Other histological types | 6 (3.1) | |