Table 5 Distribution of lung function test parameters in 120 rice mill workers by duration of employment
From: Prevalence of respiratory symptoms and disorders among rice mill workers in India
Parameters | Duration of employment (years) | F value | p value | Post hoc multiple comparison tests | |||||
|---|---|---|---|---|---|---|---|---|---|
N = 47 <10 (mean ± SD) | N = 31 10–19 (mean ± SD) | N = 42 ≥20 (mean ± SD) | |||||||
Comparison | P value | SE | P < 0.05 | ||||||
FVC (l) | 4.01 ± 0.14 | 3.52 ± 0.23 | 3.10 ± 0.31 | 167.90 | 0.000 | 1 vs. 3 | 18.3 | 0.03 | Yes |
1 vs. 2 | 9.0 | 0.03 | Yes | ||||||
2 vs. 3 | 7.6 | 0.03 | Yes | ||||||
FEV1 (l) | 3.08 ± 0.41 | 2.81 ± 0.32 | 2.21 ± 0.19 | 82.11 | 0.000 | 1 vs. 3 | 12.6 | 0.04 | Yes |
1 vs. 2 | 3.60 | 0.05 | Yes | ||||||
2 vs. 3 | 7.82 | 0.05 | Yes | ||||||
% FEV1/FVC | 76.25 ± 3.02 | 79.14 ± 3.24 | 72.04 ± 2.84 | 51.62 | 0.000 | 1 vs. 3 | 9.93 | 0.50 | Yes |
1 vs. 2 | 4.14 | 0.49 | Yes | ||||||
2 vs. 3 | 6.57 | 0.45 | Yes | ||||||
PEFR (l/min) | 325.25 ± 29.2 | 311.05 ± 32.0 | 300.0 ± 31.0 | 7.63 | 0.000 | 1 vs. 3 | 3.89 | 4.59 | Yes |
1 vs. 2 | 2.00 | 5.00 | No | ||||||
2 vs. 3 | 1.52 | 5.11 | No | ||||||