Table 6: Comparison of U-Al concentrations in the exposed group between subjects without and with symptoms.
Respiratory chronic symptoms | U-Al concentrations (µg/l) in the exposed group (Mean ± SD) | p-Value* | |
Without symptoms | With symptoms | ||
Asthma | 96.98 ± 7.64 | 96.98 ± 7.64 | 0.073 |
Chronic cough | 95.03 ± 5.64 | 102.48 ± 8.62 | 0.001*** |
Morning cough with sputum | 97.19 ± 7.87 | 99.48 ± 7.43 | 0.282 |
Phlegm | 97.86 ± 7.71 | 97.65 ± 9.72 | 0.957 |
Chronic phlegm | 97.98 ± 7.90 | 96.23 ± 6.15 | 0.630 |
Wheeze | 97.42 ± 7.60 | 100.95 ± 8.74 | 0.231 |
Respiratory problems (asthma, coughing) caused by current work | 97.01 ± 7.33 | 104.90 ± 8.26 | 0.01** |
T-test: *significant at P < 0.05, **significant at P < 0.01, ***significant at P < 0.001.