Clinical characteristics of patients with usual interstitial pneumonia (UIP) and nonspecific interstitial pneumonia (NSIP)
| Characteristic | UIP | NSIP | p-value |
| Subjects n | 53 | 7 | |
| Sex | |||
| M | 37 (70%) | 2 (29%) | 0.03 |
| F | 16 (30%) | 5 (71%) | |
| Age yrs | 60±12 (30–88) | 49±9 (39–67) | 0.03 |
| Smoking status | |||
| Current pk-yrs | 11 (21%) | 0 | ns |
| 32±12 | |||
| Exsmoker pk-yrs | 24 (45%) | 3 (43%) | ns |
| 44±31 | 35±22 | ns | |
| Never | 17 (32%) | 4 (57%) | ns |
| Symptoms | |||
| Exertional dyspnoea | 47 (87%) | 7 (100%) | ns |
| Duration, monins# (IQR) | 22 (6–24) | 28 (12–36) | ns |
| Cough | 34 (63%) | 4 (57%) | ns |
| Signs | |||
| Crackles | 48 (91%) | 5 (71%) | ns |
| Clubbing | 20 (38%) | 4 (57%) | ns |
Data are presented as n (%) mean±sd or mean (range)
ns: nonsignificant
IQR: interquartile range
#: prior to biopsy