| Non-adjusted HR | p | Adjusted HR | p |
---|---|---|---|---|
Demographics | ||||
 Male sex | 2.00 (1.31–3.05) | 0.001 | 1.53 (0.98–2.39) | 0.060 |
 Age at diagnosis (per 1 year) | 1.05 (1.04–1.07) | < 0.001 | 1.08 (1.04–1.12) | < 0.001 |
 Age at diagnostic > 60 years | 4.97 (2.53–9.78) | < 0.001 | 5.79 (2.92–11.49) | < 0.001 |
 Disease duration at time of diagnosis (per 1 year) | 1.02 (0.97–1.07) | 0.542 | 1.01 (0.96–1.06) | 0.763 |
 African origin (vs. European) | 0.79 (0.38–1.62) | 0.516 | 0.93 (0.43–2.03) | 0.864 |
Skin involvement | ||||
 dcSSc subtype (vs. lcSSc) | 2.06 (1.39–3.05) | < 0.001 | 2.40 (1.58–3.64) | < 0.001 |
 mRSS > 5 | 1.24 (1.12–1.38) | < 0.001 | 1.21 (1.03–1.43) | 0.022 |
 Past and/or active digital ulcers | 1.22 (0.79–1.90) | 0.371 | 1.29 (0.81–2.04) | 0.277 |
 Telangiectasia | 1.64 (1.08–2.48) | 0.019 | 1.55 (1.02–2.35) | 0.039 |
 Calcinosis | 1.37 (0.79–2.36) | 0.260 | 1.22 (0.69–2.16) | 0.503 |
Lung involvement | ||||
 NYHA class I | – |  | – |  |
 NYHA class II | 2.68 (1.46–4.92) | 0.001 | 2.37 (1.29–4.36) | 0.006 |
 NYHA class III | 17.53 (3.97–14.27) | < 0.001 | 6.74 (3.53–12.88) | < 0.001 |
 NYHA class IV | 25.76 (10.55–62.92) | < 0.001 | 16.61 (6.68–41.26) | < 0.001 |
 NYHA classes III–IV (vs. class I) | 4.68 (3.07–7.13) | < 0.001 | 4.33 (2.82–6.66) | < 0.001 |
 6MWD (per 100 m) | 0.46 (0.36–0.58) | < 0.001 | 0.51 (0.39–0.67) | < 0.001 |
 TLC < 70% predicted | 3.87 (2.36–6.35) | < 0.001 | 3.38 (1.96–5.82) | < 0.001 |
 FVC < 70% predicted | 3.11 (1.92–5.02) | < 0.001 | 2.79 (1.62–4.80) | < 0.001 |
 DLCO < 70% predicted | 4.01 (2.33–6.89) | < 0.001 | 3.31 (1.87–5.88) | < 0.001 |
 Interstitial lung disease | 1.99 (1.32–2.99) | < 0.001 | 1.50 (0.96–2.34) | 0.072 |
PH (echo. and/or RHC) | 5.01 (3.18–7.89) | < 0.001 | 4.15 (2.59–6.65) | < 0.001 |
 sPAP < 35 mmHg | – |  | – |  |
 35–46 mmHg | 2.05 (0.98–4.28) | 0.056 | 1.26 (0.58–2.70) | 0.559 |
 > 46 mmHg | 6.44 (3.69–11.22) | < 0.001 | 5.94 (3.30–10.72) | < 0.001 |
 PAH (RHC) | 4.96 (2.82–8.72) | < 0.001 | 4.39 (2.43–7.93) | < 0.001 |
Heart involvement | ||||
 Arrhythmia | 2.44 (0.98–6.02) | 0.054 | 1.31 (0.52–3.32) | 0.569 |
 AV block | 0.95 (0.13–6.80) | 0.956 | 1.15 (0.15–8.58) | 0.890 |
 BB block | 1.26 (0.31–5.15) | 0.748 | 1.37 (0.33–5.67) | 0.661 |
 LVEF < 50% | 1.82 (0.25–13.24) | 0.555 | 0.92 (0.12–6.84) | 0.938 |
 Diastolic dysfunction | 1.36 (0.43–4.35) | 0.603 | 0.97 (0.30–3.13) | 0.953 |
 Pericarditis | 1.74 (0.84–3.61) | 0.139 | 1.07 (0.50–2.26) | 0.864 |
 Valvular disease | 4.03 (1.97–8.25) | < 0.001 | 2.20 (1.05–4.60) | 0.037 |
Renal involvement | ||||
 Scleroderma renal crisis | 3.44 (2.01–5.89) | < 0.001 | 2.95 (1.61–5.40) | < 0.001 |
 GFR < 80 ml/min | 1.64 (1.06–2.52) | 0.025 | 1.37 (0.85–2.21) | 0.199 |
Gastrointestinal involvement | 1.07 (0.68–1.69) | 0.756 | 1.02 (0.65–1.62) | 0.916 |
 BMI < 18.5 kg/m2 | 1.10 (0.45–2.74) | 0.831 | 1.79 (0.71–4.51) | 0.220 |
 Albuminemia < 35 g/l | 2.30 (1.24–4.30) | 0.009 | 1.45 (0.75–2.82) | 0.270 |
Muscular involvement | 1.66 (1.10–2.51) | 0.016 | 1.46 (0.92–2.31) | 0.106 |
 CPK > 200 IU/L | 1.27 (0.58–2.76) | 0.550 | 1.15 (0.50–2.64) | 0.740 |
Joint involvement | 1.22 (0.82–1.80) | 0.329 | 1.08 (0.70–1.66) | 0.720 |
Cancer | 2.44 (1.41–4.21) | 0.001 | 1.86 (1.07–3.26) | 0.029 |
Anemia | 2.66 (1.75–4.06) | < 0.001 | 2.37 (1.54–3.66) | < 0.001 |
CRP > 8 mg/l | 2.05 (1.28–3.27) | 0.003 | 1.70 (1.02–2.82) | 0.041 |
Serologic features | ||||
 ACA | 0.95 (0.62–1.44) | 0.795 | 0.85 (0.55–1.31) | 0.459 |
 Anti-Scl70 antibodies | 0.87 (0.55–1.36) | 0.534 | 0.82 (0.51–1.30) | 0.390 |
 Anti-U1RNP antibodies | 1.41 (0.51–3.93) | 0.506 | 1.32 (0.44–3.92) | 0.616 |
 Anti-RNAP3 antibodies | 0.96 (0.23–3.94) | 0.949 | 1.32 (0.44–3.92) | 0.616 |
 Anti-PMScl antibodies | 0.33 (0.05–2.41) | 0.277 | 0.49 (0.07–3.54) | 0.476 |
 APL antibodies | 1.54 (0.71–3.35) | 0.280 | 1.18 (0.53–2.63) | 0.679 |
 Low complement | 2.40 (0.97–5.95) | 0.059 | 2.38 (0.95–5.95) | 0.063 |
Smoking | 1.06 (0.69–1.62) | 0.795 | 0.97 (0.59–1.59) | 0.901 |