Table 1 Demographic characteristics of patients enrolled in the SLS.

Variables	Total patients	Limited SSc	Diffuse SSc	p value
	(n = 158)	(n = 64)	(n = 94)
Limited/diffuse (%)	40/60
Gender (% female/% male)	70/30	76/24	65/35	0.16
Age, year (SD)	48 (13)	52 (11)	49 (14)	0.67
Duration of SSc at entry, year (SD)	3.1 (2.1)	3.1 (2.2)	3.1 (2.0)	0.83
Duration of Raynaud's at entry, year (SD)	4.9 (5.2)	6.4 (6.4)	3.9 (3.9)	0.003
Race
Caucasian (%)	68	70	66	0.18
Afro‐American (%)	16	11	20
Other	16	19	14
BAL and HRCT
BAL (% alveolitis positive)	63	69	60	0.60
HRCT (% any GGO)	91	92	89	0.60