Table 2 Occupational factors and pulmonary function parameters of participants
Variables | Number (%) | Pulmonary function parameters | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
ΔFVC (%) | P value | ΔFEV1 (%) | P value | ΔFEV1/FVC(%) | P value | ΔPEF (%) | P value | ΔFEF (25–75)(%) | P value* | ||
Job title | |||||||||||
Administrative staff | 17 (5.6%) | 6.61 ± 2.53 | 0.87 | 7.7 ± 3.94 | 0.57 | 4.55 ± 0.59 | 0.70 | 12.61 ± 0.59 | 0.82 | 19.47 ± 4.23 | 0.60 |
Driver | 15 (4.9%) | 5.48 ± 1.20 | 6. 04 ± 1.20 | 5.72 ± 047 | 6.74 ± 2.67 | 16.25 ± 10.87 | |||||
Worker | 273 (89.5%) | 7.93 ± 1.65 | 8. 07 ± 2.06 | 5.22 ± 0.67 | 11.31 ± 0.90 | 19.71 ± 8.34 | |||||
Work experience | |||||||||||
≤ 7 years | 157 (51.5%) | 8.14 ± 1.92 | 0.57 | 8.58 ± 2.24 | 0.79 | 5.32 ± 0.71 | 0.75 | 12.45 ± 0.24 | 0.24 | 16.21 ± 8.20 | 0.93 |
> 7 years | 148 (48.5%) | 7.31 ± 1.42 | 7.27 ± 2.00 | 5.09 ± 0.52 | 9.67 ± 1.73 | 22.55 ± 8.32 | |||||
Using mask | |||||||||||
Never | 63 (20.7%) | 8.4 ± 0.65 | 8.07 ± 1.22 | 3.45 ± 0.75 | 12.90 ± 1.50 | 26.65 ± 11.15 | |||||
Sometimes | 35 (11.5%) | 4.30 ± 2.82 | 0.38 | 5.80 ± 4.85 | 0.014 | 5.50 ± 3.20 | 0.70 | 6.08 ± 6.70 | 0.005 | 17.40 ± 9.70 | 0.002 |
Usually | 207 (67.9%) | 8.00 ± 1.80 | 8.20 ± 1.80 | 5.50 ± 0.14 | 11 ± 0.85 | 17.70 ± 5.80 | |||||
Exposed to environmental risk factors | |||||||||||
Exposed | 240 (78.7%) | 7.70 ± 1.50 | 0.48 | 1.90 ± 17.90 | 0.36 | 5.40 ± 0.67 | 0.72 | 11.20 ± 0.90 | 0.90 | 19.90 ± 8.45 | 0.71 |
No exposure | 65 (21.30%) | 8.09 ± 2.30 | 2.90 ± 8.09 | 4.50 ± 0.41 | 11.1 ± 1.10 | 18.25 ± 7.45 | |||||