Table 1 Characteristics of the population
From: Occupational risk factors for idiopathic pulmonary fibrosis in Southern Europe: a case-control study
UIP cases (n = 69) | Controls (n = 277) | p | |
|---|---|---|---|
Males, n (%) | 50 (72.5) | 150 (54. 2) | < 0.01 |
Age, mean ± SD | 75 (± 14) | 71 (± 13) | 0.02 |
Smoking | |||
No smokers | 27 (39.1) | 110 (39.7) | NS |
Eversmokers | 42 (60.9) | 167 (60.3) | |
Atopy, n (%) | 5 (7.2) | 25 (9.0) | NS |
Rhinitis, n (%) | 22 (31.9) | 75 (27.1) | NS |
Family history of pulmonary fibrosis, n (%) | 3 (4.5) | 3 (1.1) | 0.09 |
Family autoimmunity, n (%) | 7 (10.1) | 33 (11.9) | NS |
Work duration (years), mean ± SD | 38.6 (± 10.6) | 35.4 (± 10.5) | 0.02 |
Job title | |||
Legislators, entrepreneurs, scientific and intellectual professions | 4 (5.8) | 21 (7.6) | NS |
Technical, social and health professions | 9 (13) | 62 (22.4) | NS |
Office workers | 11 (15.9) | 48 (17.3) | NS |
Dealers and service workers | 11 (15.9) | 63 (22.7) | NS |
Drivers or operatives of vehicles and installations | 6 (8.7) | 42 (15.2) | NS |
Construction workers | 14(20.3) | 26 (9.4) | 0.02 |
Food industry workers | 5 (7.2) | 30 (10.8) | NS |
Textile industry workers | 9 (13) | 36 (13) | NS |
Wood industry workers | 6 (8.7) | 15 (5.4) | NS |
Metallurgical and steel industry | 8 (11.6) | 6 (2.2) | 0.02 |
Farmers, vets and gardeners | 30 (43.5) | 51 (18.4) | < 0.01 |
Chemical industry | 2 (2.9) | 0 (0) | 0.04 |