Variables | IPF patients group (n_30) | Control group (n_30) | Test of significance | P-value |
---|---|---|---|---|
Age (years) | ||||
 Mean ± SD | 63.40 ± 5.58 | 62.90 ± 9.91 | t = 0.241 | 0.811 |
Sex | ||||
 Male | 23-(76.7%) | 23-(76.7%) | χ2 = 0.00 | 1.00 |
 Female | 7-(23.3%) | 7-(23.3%) | ||
Smoking | ||||
 Smoker | 21 (70%) | 14 (46.7%) | χ2 = 3.36 | 0.067 |
 Nonsmoker | 9 (30%) | 16 (53.3 %) | ||
Occupation | ||||
 Non-worker | 13 (43.3%) | 9 (30%) | MC | 0.603 |
 Manual worker | 14 (46.7%) | 18 (60%) | ||
 Professional worker | 3 (10%) | 3 (10%) | ||
Dyspnea grade | ||||
 0 | 1 (3.3%) | 27 (90%) | MC | ≤ 0.001* |
 1 | 4 (13.3%) | 3 (10%) | ||
 2 | 12 (40.0%) | 0 (0%) | ||
 3 | 11 (36.7%) | 0 (0%) | ||
 4 | 2 (6.7%) | 0 (0%) | ||
Cough grade | ||||
 0 | 1 (3.3%) | 24 (80%) | MC | ≤ 0.001* |
 1 | 13 (43.3%) | 6 (20%) | ||
 2 | 16 (53.3%) | 0 (0%) |