Table 4. Discriminant validity of LupusQoL used in Chinese patients with SLE (LupusQoL-China) with damage as the external anchor.

	SDI
Domains	≤1	>1	P value
Physical health	87.25(12.93)	66.78(27.40)	0.000
Pain	86.47(12.59)	68.66(29.30)	0.001
Planning	79.99(21.75)	60.14(27.38)	0.000
Intimate relationship	63.10(30.56)	43.31(32.77)	0.000
Burden to others	67.59(25.99)	56.88(34.21)	0.100
Emotional health	78.22(22.40)	61.77(27.02)	0.000
Body image	75.43(18.53)	72.72(14.48)	0.109
Fatigue	82.02(16.66)	75.82(22.50)	0.025

SDI: Systemic Lupus Collaborating Clinics Damage Index.