Patient characteristics
| Age (years) | |
|---|---|
| NYHA, New York Heart Association grading for dyspnoea; HAQ, modified Standford Health Assessment Questionnaire; FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; Tlco, carbon monoxide transfer factor; RV, residual volume; CXR, chest radiograph; FA, fibrosing alveolitis; HRCT, high resolution computed tomography. | |
| Range | 56–70 |
| Median | 61 |
| Sex | |
| Male | 9 |
| Female | 20 |
| Duration (years) | 1–24 |
| Mean | 11 |
| Rheumatoid nodules present | 18 |
| Cough | 18 |
| NYHA III dyspnoea | 5 |
| Cigarette pack years | |
| Range | 0–80 |
| Median | 21 |
| Bilateral basal crackles | 15 |
| Finger clubbing | 5 |
| HAQ | 0–2.875 |
| Median | 1.875 |
| FEV1 (litres) | |
| Range | 1.15–4.35 |
| Median | 2.19 |
| FVC (litres) | |
| Range | 1.23–5.67 |
| Median | 2.79 |
| FVC (% of predicted) | |
| Range | 52–123 |
| Median | 96 |
| FEV1/FVC | |
| Range | 49–96 |
| Median | 78 |
| Tlco (% of predicted) | |
| Range | 25–99 |
| Median | 59 |
| RV (% of predicted) | |
| Range | 55–185 |
| Median | 95 |
| CXR characteristic of FA | 4 |
| HRCT lung involvement (%) | |
| Range | 0.12–95.42 |
| Median | 5.96 |