Disease group | Control | IPF/UIP | p Value |
---|---|---|---|
Number | 50 | 119 | |
Age—mean (SD) | 47.5 (16.4) | 62.6 (8.7) | 1.50E-12* |
Gender—% male | 54 | 65 | 0.192† |
Race—% Caucasian | 82 | 94 | 0.0141† |
Smoker—N (%) | <0.0001† | ||
Current | 21 (42) | 0 (0) | |
Former | 7 (14) | 70 (59) | |
Never | 20 (40) | 41 (34) | |
Unknown | 2 (4) | 8 (7) | |
Pack years—mean (SD)‡ | 22.1 (19.5) | 69.9 (115) | 0.047* |
*By two-tailed t test.
†By χ2 test.
‡Average for current and former smokers.
IPF , idiopathic pulmonary fibrosis; LTRC, Lung Tissue Research Consortium; UIP, usual interstitial pneumonia.