Table 2.

The prevalence of thyroid dysfunction and its subgroup in RA patients and controls.

	RA group (n = 65)	Control group (n = 550)	P	OR	95%CI
Thyroid dysfunction	21 (32.3%)	78 (14.2%)	< 0.001	2.89	1.63–5.12
Hyperthyroidism	4 (6.2%)	4 (0.7%)	< 0.001	8.95	2.18–36.70
Overt hyperthyroidism	3 (4.6%)	4 (0.7%)	0.005	6.61	1.45–30.19
Hypothyroidism	17 (26.2%)	74 (13.5%)	0.006	2.28	1.24–4.17
Overt hypothyroidism	7 (10.8%)	4 (0.7%)	< 0.001	16.47	4.68–57.96
Subclinical thyroid dysfunction	11 (16.9%)	70 (12.7%)	0.344	1.40	0.70–2.80
Subclinical hyperthyroidism	1(1.5%)	0 (0%)	0.05	25.60	1.03–635.1
Subclinical hypothyroidism	10 (15.4%)	70 (12.7%)	0.547	1.25	0.612.56

RA, rheumatoid arthritis.