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. 2013 Oct 5;7(10):2126–2129. doi: 10.7860/JCDR/2013/5818.3449

[Table/Fig-5]:

Percentage Predicted values of Lung function parameters in sweepers before and after sweeping

Parameters Before sweeping (n =25) After Sweeping (n =25) Percentage difference (%) Significance
Percentage predicted
Mean ± SD Mean ± SD *t-value p-value
FVC 79.11 ±18.12 65.56 ± 16.09 20.67 7.38 < 0.001, HS
FEV1 77.07 ±13.04 72.58 ± 12.50 6.19 2.17 0.03, S
FEV1/FVC (%) 114.11±24.55 125.81±21.82 -9.30 8.12 < 0.001, HS
PEFR 79.28±10.48 60.29 ±17.46 31.50 1.99 0.05 S
FEF25-75% 74.89±12.71 66.55±11.06 12.53 5.14 < 0.001, HS
FEF200-1200 69.12±16.11 59.12 ± 13.77 16.91 2.25 0.02 S

*unpaired ‘t’ test

p > 0.05, Not significant (NS), p < 0.01Significant (S),

p < 0.001, Highly Significant (HS)