Table 1 Characteristics of the study population stratified by exposure group
Reference (n = 123) | Welders n = 114) | Solvents (n = 106) | Mineral dust (n = 107) | Organic dust (n = 97) | Total (n = 546) | overall p | |
|---|---|---|---|---|---|---|---|
Age (years) Mean (SD) | 38.3 1,2 (8.3) | 37.61 (7.6) | 39.3 1,2 (6.4) | 40.1 2,3 (7.8) | 41.83 (8.3) | 39.3 (7.8) | 0.0001 |
Height (cm) Mean (SD) | 173 (6.7) | 172.3 (5.9) | 171.4 (6.7) | 171.8 (6.8) | 172.3 (5.8) | 172.2 (6.4) | NS |
Weight (kg) Mean (SD) | 69.3 2,3 (10.9) | 65.61 (10.5) | 66.2 1,2 (11.5) | 67.3 1,2 (11.6) | 713 (12.4) | 65.8 (11.5) | 0.003 |
Duration exposure Mean (years) (SD) | 18 4 (8.5) | 13.9 2,3 (5.7) | 11.91 (4.9) | 12.8 1 (6.6) | 14.6 3,4 (5.9) | 13.8 (6.6) | <0.0001 |
Monthly salary (DA) Mean (SD) | 11022 4 (1929) | 8383 1 (1692) | 99723 (1842) | 9262 2 (2053) | 9989 3 (1622) | 9739 (2049) | <0.0001 |
Smoking Habit | |||||||
Non-smokers n (%) | 43 (35) | 27 (24) | 26 (25) | 29 (27) | 30 (31) | 155 (28.4) | NS |
Ex-smokers n (%) | 26 (25) | 25 (22) | 17 (13) | 30 (28) | 27 (28) | 125 (22.8) | NS |
Smokers n (%) | 54 1 (44) | 62 1,2 (54) | 62 2 (59) | 48 1 (45) | 40 1 (41) | 256 (48.8) | 0.04 |
Cigarettes/day* Mean (SD) | 15.2 1 (8.1) | 17 1 (11) | 18.9 2 (9.1) | 16.4 1,2 (8.1) | 17.3 1,2 (10.5) | 16.9 (9.4) | NS |
Pack years* Mean (SD) | 12.9 1 (6.7) | 12 1 (5.9) | 16.5 2 (6.7) | 11.9 1 (6.8) | 13.1 1 (5.8) | 13.3 (6.4) | 0.04 |
Allergy n (%) | 10 1,2 (8.1) | 3 1 (2.6) | 13 2 (12.4) | 4 1 (3.8) | 5 1,2 (5.1) | 35 (6.4) | 0.02 |
Asthma n (%) | 3 (2.4) | 3 (2.6) | 2 (1.9) | 0 (0) | 1 (1) | 9 (1.6) | NS |