| Table 5: The results of pulmonary function test in the exposed and unexposed groups. Values are mean (SD) percent predicted values. | |||||||||
| Welding types | Exposed group (n=60) | Unexposed group (n=45) | p value | ||||||
| FVC | FEV1 | FEV1/FVC | FVC | FEV1 | FEV1/FVC | ||||
| SMAW* | 80.8 (8.4) | 74.6 (9.4) | 73.5 (9.2) | 97.3 (12.8) | 93.1 (10.2) | 95.6 (7.4) | <0.001 | ||
| GMAW† | 77.8 (9.2) | 73.6 (8.3) | 74.4 (7.2) | 97.3 (12.8) | 93.1 (10.2) | 95.6 (7.4) | <0.001 | ||
| FCAW‡ | 85.7 (10.3) | 76.7 (8.8) | 74.1 (4.1) | 97.3 (12.8) | 93.1 (10.2) | 95.6 (7.4) | 0.003 | ||
| *Shielded metal arc welding; †Gas metal arc welding; ‡Flux cored arc welding | |||||||||
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