Table 1.
Baseline characteristics of patients with IPF in the derivation cohort.
| Characteristics | Non-survivors | Survivors | p |
|---|---|---|---|
| N = 221 | N = 156 | ||
| Age (years) | 64.51 ± 9.46 | 65.16 ± 9.23 | 0.505 |
| Males | 188 (85.07) | 129 (82.69) | 0.535 |
| Smoking | |||
| Never smoker | 45 (27.44) | 32 (27.12) | 0.927 |
| Current smoker | 29 (17.68) | 23 (19.49) | |
| Ever smoker | 90 (54.88) | 63 (53.39) | |
| FEV1, % predicted | 74.20 ± 19.97 | 79.61 ± 22.16 | 0.043 |
| FVC, % predicted | 71.66 ± 19.91 | 77.39 ± 20.31 | 0.025 |
| FEV1/FVC, % | 82.83 ± 9.20 | 82.20 ± 8.90 | 0.582 |
| DLCO, % predicted | 33.35 ± 16.41 | 40.36 ± 18.71 | 0.008 |
| Charlson Comorbidity Index | 0.86 ± 1.12 | 0.90 ± 1.12 | 0.706 |
Data are expressed as median (interquartile range) or count (percentage) where appropriate. P was calculated by the t-test for continuous variables and the Chi-square test and Fisher's exact test for categorical variables.