Table 1.

Comparison of RA, SLE, and control groups.

	RA (n = 47)	SLE (n = 32)	Control (n = 47)	P
Age, mean ± SD	52.1 ± 11.9	41.4 ± 14.5	47.2 ± 17.3	0.01
Female, n (%)	39 (83.0)	27 (84.4)	36 (80.0)	0.87
Diabetes, n (%)	4 (8.5)	1 (3.1)	5 (11.1)	0.44
Hypertension, n (%)	19 (40.4)	10 (31.3)	12 (26.7)	0.36
Dyslipidemia, n (%)	9 (19.1)	1 (3.1)	6 (13.3)	0.11
Smoking, n (%)	14 (29.8)	12 (37.5)	13 (28.9)	0.69
BMI, mean ± SD	27.9 ± 5.0a	25.8 ± 4.9b	26.2 ± 4.6	0.13
CRP, mg/dLc	0.6 (0.1–4.2)	0.4 (0.1–20.6)	n/a	0.05*

BMI: Body mass index; CRP: C-reactive protein; n/a: not available; RA: rheumatoid arthritis; SLE: systemic lupus erythematosus; ^a: 1, ^b: 2 missing data; ^c: median and min–max. *: CRP value is only available for RA and SLE patients. Bold font indicates statistically significant difference.