pSS (10/45)

RA (19/39)

DM/PM (6/52)

SSc (1/31)

Total CTD (27/169)

CTD-ILD

43.2 ± 12.7

46.9 ± 11.6

34.6 ± 16.2

36.8 ± 11.6

42.0 ± 13.5

CTD+ILD

53.1 ± 11.6

54.0 ± 14.1

45.5 ± 14.8

44.0 ± 13.8

48.8 ± 14.3

P value

0.003

0.089

0.039

0.273

0.002