Table 2 Baseline demographics of lung cancer patients with and without idiopathic pulmonary fibrosis (IPF) from institution, and lung cancer in overall population of state of Pennsylvania
Variables | Lung cancer with IPF | Lung cancer without IPF (institutional data) | Lung cancer without IPF (population data) | p-values column 1 vs. 3 | |||
|---|---|---|---|---|---|---|---|
N | Results | N | Results | N | Results | ||
Age in years, median (IQR) | 31 | 65 (62–71) | 4176 | 67 (60–75) | 104,954 | 69 (61–77) | 0.03 |
Gender (% male) | 31 | 19 (61%) | 4176 | 2023 (48%) | 104,954 | 53,800 (51%) | 0.16 |
Ethnicity (% Caucasian) | 31 | 30 (97%) | 4176 | 3679 (88%) | 104,954 | 89,643 (85%) | 0.07 |
Smoking – never | 31 | 7 (23%) | 4176 | 395 (10%) | NA | < 0.001 (column 1 vs 2) | |
former | 24 (77%) | 2362 (57%) | |||||
current | 0 | 1361 (33%) | |||||
Mortality over observation period (%) | 31 | 26 (84%) | 4176 | 2644 (63%) | 104,954 | 78,254 (75%) | 0.2 |
Survival time in months, median (IQR) | 26 | 5 (1–10) | 4176 | 13 (6–26) | NA | NA | 0.002 (column 1 vs 2) |