Table 1.

Clustering of SSc patients based on clinics

Cluster 1Cluster 2Cluster 3Cluster 4Cluster 5
(n=66)(n=50)(n=129)(n=81)(n=81)
Age in years, mean (SD)53 (14)54 (14)54 (14)53 (16)62 (12.4)
Female, % (n)90 (60)86 (43)85 (110)72 (58)74 (60)
Time since non-Raynaud, median (range)3 (-3–14)10 (-3–44)2 (0–20)3 (0–27)13 (0–46)
dcSSc, % (n)0 (0)2 (1)17 (22)65 (53)25 (20)
Mean mRSS (SD)0 (0)4 (3)4 (3)14 (11)4 (6)
PAH, % (n)3 (2)4 (2)0 (0)5 (4)20 (16)
DLCO, %predicted, mean (SD)70 (18)66 (16)70 (15)64 (16)54 (18)
History of renal crisis, % (n)0 (0)0 (0)0 (0)3 (2)17 (14)
Digital ulcers, % (n)15 (10)98 (49)4 (5)28 (23)6 (5)
Anti-topisomerase, % (n)5 (3)15 (7)22 (28)48 (37)24 (19)
Anti-centromere, % (n)62 (39)48 (23)41 (53)8 (6)30 (24)