Table 1

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.
Duration (years)1–24
Rheumatoid nodules present18
NYHA III dyspnoea5
Cigarette pack years
Bilateral basal crackles15
Finger clubbing5
FEV1 (litres)
FVC (litres)
FVC (% of predicted)
Tlco (% of predicted)
RV (% of predicted)
CXR characteristic of FA4
HRCT lung involvement (%)