| UIP(n = 19) | fNSIP(n = 13) | cNSIP/OP(n = 8, 6 cNSIP, 2 OP) | p Value (UIP vs fNSIP) | p Value (UIP vs cNSIP/OP) | p Value (fNSIP vs cNSIP/OP) | |
| M/F | 15/4 | 5/8 | 3/5 | |||
| Age (years) | 62.4 (7.3) | 58.6 (9.8) | 57.1 (10.7) | 0.752 | 0.615 | 0.996 |
| Percentage of smokers (number of current:ex:never) | 63.2% (4:8:7) | 30.8% (2:2:9) | 50% (2:2:4) | |||
| Onset | Insidious 18 cases; recurrent 1 case | Insidious 8 cases; recurrent 5 cases | Insidious 1 case, recurrent 7 cases | |||
| Outcome | 10 cases died | 1 case died | All cases survived | |||
| VC (%) | 77.5 (25.6) | 75.9 (18.0) | 91.1 (27.8) | 0.998 | 0.513 | 0.473 |
| TLC (%) | 69.6 (20.0) | 85.4 (18.7) | 98.9 (20.0) | 0.196 | 0.031 | 0.603 |
| Pao2 (kPa) | 10.8 (1.2) | 10.2 (1.6) | 9.1 (1.2) | 0.672 | 0.039 | 0.362 |
| A–aDo2 (kPa) | 2.51 (1.75) | 2.56 (1.20) | 4.35 (1.69) | 0.999 | 0.049 | 0.111 |
| Fibrosis score | 2.19 (0.71) | 2.21 (0.82) | 1.29 (0.32) | 0.997 | 0.011 | 0.015 |
| Ground glass score | 1.92 (0.75) | 2.49 (0.71) | 2.89 (0.98) | 0.133 | 0.016 | 0.515 |
Data are shown as mean (SD).
A–aDo2, alveolar-arterial oxygen difference; NSIP, non-specific interstitial pneumonia; cNSIP, cellular NSIP; fNSIP, fibrotic NSIP; OP, organising pneumonia; Pao2, arterial oxygen tension; TLC, total lung capacity; UIP, usual interstitial pneumonia; VC, vital capacity.