Table 1: Sociodemographics of cohort.

CharacteristicsAll subjectsRA subjectsHealthy subjectsDepressed subjectsSLE subjects
()()() value() value() value

Gender, number (%)
 Female192 (92)69 (84)21 (95)0.29129 (91)0.55073 (100)<0.001
Age, mean ± SD49.27 ± 11.9954.99 ± 10.0843.14 ± 11.54< 0.00149.25 ± 14.030.04044.70 ± 10.38<0.001
Education (years), mean ± SD8.43 ± 4.456.85 ± 3.9913.55 ± 3.10< 0.0018.91 ± 4.310.0178.88 ± 4.140.002
Education level, number (%)< 0.0010.200<0.001
 Primary (or less)97 (46)53 (65)1 (5)15 (47)28 (38)
 Middle school34 (16)14 (17)2 (9)7 (22)11 (15)
 High school44 (21)7 (9)8 (36)5 (16)24 (33)
 College32 (15)7 (9)10 (45)5 (16)10 (14)
 Graduate school2 (1)1 (1)1 (5)0 (0)0 (0)
Marriage status, number (%)0.0240.4280.026
 Unmarried33 (16)9 (11)8 (36)6 (19)10 (14)
 Married135 (65)50 (61)9 (41)22 (69)54 (74)
 Divorced28 (13)14 (17)4 (18)2 (6)8 (11)
 Widowed10 (5)8 (10)0 (0)2 (6)0 (0)
Cohabiting3 (1)1 (1)1 (5)0 (0)1 (1)
Employment status, number (%)0.0020.1370.452
 Employed88 (42)28 (34)16 (73)16 (50)28 (38)