Baseline characteristics of patients
| Parameter | Chronic progressive | Chronic stable | P value |
| Sex (F/M) | 2/6 | 3/8 | 0.96 |
| Age | 50 (36–51) | 44 (42–48) | 0.68 |
| Scadding (0/1/II/III/IV) | 0/2/4/2/0 | 0/3/5/2/1 | 0.97 |
| EPM (no of organs involved) | 2.0 (1.75–2.25) | 2.0 (1.5–2.5) | 0.79 |
| Training (yes/no) | 5/3 | 5/6 | 0.51 |
| Treatment (yes/no) | 4/4 | 0/11 | 0.012 |
Data are presented as n or median (25th–75th percentile). Training denotes patients participating in a 3-month training programme, described in reference number.21 Treatment denotes treatment at third follow-up.
EPM, extrapulmonary manifestation; F, female; M, male; Scadding, radiographic extent of sarcoidosis assessed by chest X-ray using Scadding staging system (0–IV).