| Diagnosis | Percentage of cases 2001–2008 (n = 210) | Percentage of cases 2014–2016 (n = 104) | P= |
|---|---|---|---|
| Usual interstitial pneumonia (UIP) | 37% | 29% | 0.17 |
| Non-specific interstitial pneumonia (NSIP) | 12% | 7% | 0.17 |
| Organising pneumonia | 10% | 3% | 0.025 |
| Sarcoidosis | 8% | 10% | 0.53 |
| Smoking related (RB-ILD, DIP) | 9% | 23% | 0.0014 |
| Hypersensitivity pneumonitis | 4% | 12% | 0.0072 |
| Vasculitis/Connective tissue disease | 2% | 1% | >0.99 |
| Other | 18% | 15% | 0.43 |