Table 1.

Clinical profiles of patient and control subjects in this study

Characteristic	Control (n = 306)	SLE (n = 150)	SLE_ONFH (n = 50)	P values
Age (mean ± SD)	32.76 ± 11.51	31.37 ± 9.97	31.28 ± 9.04	NS
Gender
Male	28	13	4	NS
Female	278	137	46
BMI (kg/m2)
≥25	37	24	7	NS
< 25	269	126	43

SD standard deviation, NS not significant, BMI body mass index, SLE systemic lupus erythematosus, ONFH osteonecrosis of the femoral head