|
Symptoms
| |
Development workers
|
Mine workers
|
Other production workers
|
P
1
|
|---|
|
Dry cough
|
Never smoking
|
17(43.69%)
|
16(29.6%)
|
36(37.9%)
|
0.365
|
| |
All
|
21 (45.7%)
|
20(25.6%)
|
49 (39.2%)
|
0. 049
|
|
Breathlessness
|
Never smoking
|
12(30.8%)
|
9(16.7%)
|
14(14.7%)
|
0.087
|
| |
All
|
16 (34.8%)
|
13(16.7%)
|
19 (15.2%)
|
0.012
|
|
Blocked nose
|
Never smoking
|
6(15.4%)
|
5(9.3%)
|
15(15.8%)
|
0.514
|
| |
All
|
11 (23.9%)
|
6(7.7%)
|
17 (13.6%)
|
0.040
|
|
Running nose
|
Never smoking
|
19(48.7%)
|
27(50.0%)
|
53(55.8%)
|
0.681
|
| |
All
|
25 (54.3%)
|
37(47.4%)
|
71(56.8%)
|
0.425
|
|
Sneezing
|
Never smoking
|
13(33.3%)
|
40(42.1%)
|
40(40.3%)
|
0.607
|
| |
All
|
17 (37.0%)
|
29(37.2%)
|
51(40.8%)
|
0.835
|
-
1Chi-square test between the three groups of workers
