Table 3.
Characteristics of f-IPF and s-IPF patients
| Patients characteristics | f-IPF index patients n = 28 | s- IPF n = 147 | p-value |
|---|---|---|---|
| mean value ± SD | mean value ± SD | ||
| Male [%] | 61 | 79 | 0.068 |
| Height [cm] | 170 ± 8 | 173 ± 7 | 0.058 |
| Weight [kg] | 80 ± 14 | 85 ± 16 | 0.314 |
| BMI [kg/m2] | 28 ± 5 | 28 ± 6 | 0.630 |
| Current tobacco consumption [%] | 0 | 2 | 1.000 |
| Former tobacco consumption [%] | 64 | 73 | 0.514 |
| Pack years [n] | 14 ± 18 | 19 ± 20 | 0.341 |
| Age at onset of symptoms [years] | 55.4 ± 10 | 63.2 ± 11 | 0.001 |
| Age at first diagnosis [years] | 58.3 ± 10 | 65.1 ± 10 | 0.001 |
| Age at death [years] | 67.0 ± 8 | 71.8 ± 8 | 0.059 |
| Death due to IIP [%] | 90 | 95 | 1.000 |
Abbreviations: IIP idiopathic interstitial pneumonia, IPF idiopathic pulmonary fibrosis, SD standard deviation, BMI body mass index, pack years number of packs per day x smoker years, occupational exposure occupational contact with potentially lung-damaging substances