Association between the Type of Workplace and Lung Function in Copper Miners
Table 4
The effect of workplace and smoking and interaction between these factors in their effect on spirometric parameters in copper miners after 10, 20, and 25 years of work.
Effect
After 10 years
After 20 years
After 25 years
% FVC
FVC
FVC
Workplace
0,72
0,4859
5,85
0,0075
8,32
0,0003
Smoking
1,77
0,1840
2,04
0,1633
0,04
0,8376
Workplace smoking
0,30
0,7391
4,22
0,0248
1,90
0,0089
% FEV1
FEV1
% FEV1
Workplace
0,91
0,4017
8,02
0,0017
0,83
0,4331
Smoking
0,15
0,6957
5,03
0,0328
1,97
0,1611
Workplace smoking
0,10
0,9088
5,02
0,0136
0,52
0,5934
FEV1/FVC
FEV1/FVC
FEV1/FVC
Workplace
0,39
0,6753
0,17
0,8385
2,36
0,0964
Smoking
0,79
0,3730
1,40
0,2463
4,32
0,0387
Workplace smoking
1,10
0,3339
0,29
0,7499
1,24
0,2901
% PEF
% PEF
% PEF
Workplace
1,62
0,1972
1,11
0,3431
1,94
0,1457
Smoking
0,02
0,8768
0,26
0,6100
6,67
0,0102
Workplace smoking
0,50
0,6033
3,70
0,0373
1,76
0,1736
% FEF25
% FEF25
% FEF25
Workplace
0,65
0,5220
1,41
0,2593
0,36
0,6958
Smoking
1,72
0,1900
4,09
0,0525
3,33
0,0691
Workplace smoking
0,28
0,7534
3,44
0,0460
0,75
0,4725
% FEF50
FEF50
% FEF50
Workplace
0,44
0,6382
3,38
0,0481
0,33
0,7188
Smoking
0,13
0,7133
2,73
0,1096
2,81
0,0944
Workplace smoking
0,76
0,4638
3,84
0,0334
0,64
0,5275
% FEF75
% FEF75
% FEF75
Workplace
0,62
0,5362
0,39
0,6775
0,95
0,3878
Smoking
0,29
0,5899
1,67
0,2067
4,48
0,0350
Workplace smoking
1,74
0,1750
3,35
0,0494
0,54
0,5819
Spreadsheet of two-way analysis of variance; one-dimensional tests of significance. : -test value for the respective effects; : the probability level of ; values indicated in bold are statistically significant.
