Table 1: Demographic, psychological, and disease characteristics in SLE patients and controls.

VariablesSLE patients 
( )
Control subjects 
( )

Female gendera144 (91.2)176 (89.8)0.76
Age, yearsb32.9 ± 10.235.0 ± 11.40.20
SAS (≥50)a32 (20.3)14 (7.1)<0.01
SDS (≥53)a52 (32.9)28 (14.3)0.003
SLEDAI11.8 ± 9.5
Marital statusb
 Single32 (20.3)56 (18.6)0.20
 Married126 (79.7)140 (71.4)
Educationb
 <9 years86 (54.4)96 (49.0)0.47
 ≥9 years72 (45.6)100 (51.0)
Work statusb
 Working30 (19.0)44 (22.5)0.57
 Unemployed128 (81.0)152 (77.5)
Income/personb
 ≤2000 yuan100 (63.3)118 (60.2)0.68
 >2000 yuan58 (36.7)78 (39.8)
Menstrual historyb
 Normal96 (66.7)102 (58.0)0.26
 Abnormal48 (33.3)74 (42.0)

Mean ± SD. bNumber (percentage).
SAS: revised Self-Rating Anxiety Scale; SDS: revised Self-Rating Depression Scale; SLEDAI: Systemic Lupus Erythematosus Disease Activity Index.