Table 2 Spirometry data of employees with selected occupations (prevalence 3 % or more)
From: Drillers and mill operators in an open-pit gold mine are at risk for impaired lung function
Occupations | FVC, % pred. | FEV1, % pred. | FEV1/FVC, % | ||||||
|---|---|---|---|---|---|---|---|---|---|
Overall | NS | S | Overall | NS | S | Overall | NS | S | |
Heavy-duty vehicles operators | 107.8 ± 13.3 | 106.7 ± 13.8 | 108.1 ± 13.1 | 98.0 ± 12.9 | 98.1 ± 13.5 | 97.9 ± 12.8 | 75.1 ± 6.5 | 76.0 ± 5.4 | 74.9 ± 6.7 |
Other drivers | 109.1 ± 13.6 | 109.4 ± 14.8 | 108.9 ± 13.3 | 100.3 ± 13.2 | 101.3 ± 13.3 | 99.9 ± 13.2 | 75.2 ± 6.0 | 75.9 ± 5.3 | 75.0 ± 6.3 |
Mechanics | 109.1 ± 12.5 | 110.6 ± 11.2 | 108.7 ± 12.8 | 99.3 ± 12.4 | 101.3 ± 12.1 | 98.8 ± 12.5 | 75.9 ± 7.0 | 77.7 ± 7.0 | 75.9 ± 6.9 |
Cleaners | 116.8 ± 13.4 | 116.9 ± 13.5 | 116.6 ± 13.4 | 105.3 ± 12.4 | 105.7 ± 12.6 | 103.6 ± 11.7 | 77.5 ± 5.7 | 77.9 ± 5.8 | 75.8 ± 5.1 |
Security staff | 109.8 ± 11.2 | 110.0 ± 10.2 | 109.7 ± 11.6 | 99.7 ± 11.2 | 101.1 ± 11.0 | 99.1 ± 11.2 | 75.2 ± 5.0 | 76.4 ± 6.3 | 74.7 ± 4.4 |
Drillers | 105.7 ± 12.5 | 103.5 ± 11.9 | 106.5 ± 12.6 | 97.8 ± 13.2 | 94.9 ± 11.3 | 98.8 ± 13.7 | 76.7 ± 7.2 | 75.8 ± 4.7 | 77.0 ± 7.9 |
Office staff | 108.5 ± 13.3 | 108.0 ± 13.5 | 108.8 ± 13.3 | 100.4 ± 12.9 | 101.8 ± 13.9 | 99.6 ± 12.3 | 77.7 ± 7.1 | 79.1 ± 8.5 | 76.3 ± 5.9 |
Engineers | 108.2 ± 13.2 | 110.8 ± 17.4 | 105.3 ± 11.8a | 101.2 ± 16.0 | 115.2 ± 17.7 | 96.6 ± 12.8a | 77.7 ± 7.2 | 80.8 ± 3.6 | 76.7 ± 7.8 |
Food handlers | 113.0 ± 13.1 | 115.4 ± 12.6 | 106.6 ± 12.8a | 99.4 ± 11.8 | 101.6 ± 12.3 | 93.9 ± 8.2a | 75.5 ± 7.1 | 75.8 ± 7.4 | 74.8 ± 6.4 |
Mill operators, including grinder operators and metallurgists | 108.5 ± 12.4 | 109.9 ± 12.1 | 107.8 ± 12.8 | 98.7 ± 13.4 | 100.5 ± 14.7 | 97.7 ± 12.9 | 75.0 ± 7.4 | 75.1 ± 7.0 | 74.7 ± 7.6 |