Table 3 Respirable dust exposure and lung functions among textile workers
Variables | Frequency (%) |
|---|---|
Respirable dust exposure | |
 Acceptable (≤ 3 mg/m3) | 102 (49.3) |
 Increased (>  3 mg/m3) | 105 (50.7) |
 Mean ± SD (3.3 ± 0.7), Minimum 2.4, Maximum 4.1 | |
Lung functions | |
 Normal | 124 (59.9) |
 Reduced | 83 (40.1) |
  Restrictive | 75 (90.4) |
  Obstructive | 8 (9.6) |
 FVC (% prediction) | |
  Normal (≥ 80%) | 131 (63.3) |
  Reduced (<  80%) | 76 (36.7) |
  Mean ± SD (82.8 ± 17.8), Minimum 26, Maximum 134 | |
 FEV1 (% prediction) | |
  Normal (≥ 80%) | 136 (65.7) |
  Reduced (<  80%) | 71 (34.3) |
  Mean ± SD (83.6 ± 18.5), Minimum 22, Maximum 149 |  |
 FEV1/FVC |  |
  Normal (≥ 0.7) | 199 (96.1) |
  Reduced (<  0.7) | 9 (3.9) |
  Mean ± SD (0.9 ± 0.1), Minimum 0.6, Maximum 1.0 |  |