Table 2 Prevalence of chronic respiratory symptoms in agricultural workers (n = 288) compared with their controls (n = 288)
Symptoms | Agricultural workers n (%) | Control subjects n (%) | p-value |
|---|---|---|---|
Any respiratory-symptoms | 108 (37.5) | 60 (20.8) | <  0.001* |
Cough | 59 (20.5) | 26 (9.0) | 0.001* |
Phlegm | 55 (19.1) | 26 (9.0) | 0.001* |
Dyspnoea | 42 (14.6) | 30 (10.4) | 0.131 |
Wheezing | 20 (6.9) | 10 (3.5) | 0.061 |
Chest tightness | 47 (16.3) | 37 (12.8) | 0.238 |