Table 4: Comparison of exposure duration in the exposed group between subjects without and with symptoms.
Respiratory chronic symptoms | Exposure duration (months) in the exposed group (Mean ± SD) | p-Value* | |
Without symptoms | With symptoms | ||
Asthma | 39.92 ± 15.59 | 45.06 ± 16.27 | 0.260 |
Chronic cough | 37.68 ± 15.56 | 46.88 ± 14.74 | 0.021* |
Morning cough with sputum | 39.85 ± 16.03 | 44.42 ± 15.10 | 0.291 |
Phlegm | 41.11 ± 15.64 | 42.00 ± 20.78 | 0.914 |
Chronic phlegm | 41.75 ± 16.76 | 34.00 ± 16.12 | 0.295 |
Wheeze | 41.21 ± 15.26 | 40.88 ± 20.49 | 0.956 |
Respiratory problems (asthma, coughing) caused by current work | 39.49 ± 15.63 | 55.29 ± 8.99 | 0.011* |
T-test: *significant at P < 0.05, ** significant at P < 0.01, *** significant at P < 0.001.