Table 2.

Cumulative incidence of hypothyroid disease in 650 patients with rheumatoid arthritis (RA) and 650 subjects without RA.

	Number of events after incidence/index in RA / non-RA	Cumulative incidence (%) at 10 years for RA patients (±SE)	Cumulative incidence (%) at 10 years for non-RA subjects (±SE)	p-value
Hypothyroid disease	39 / 33	7.7 ± 1.4	6.7 ± 1.3	0.25
Subclinical hypothyroidism	35 / 24	4.9 ± 1.0	4.0 ± 0.9	0.063
Hashimoto’s disease	7 / 10	1.4 ± 0.6	1.8 ± 0.6	0.56
Graves’ disease	2 / 2	0.2 ± 0.2	0.4 ± 0.3	0.92
Use of Levothyroxine	31 / 29	6.1 ± 1.2	5.5 ± 1.1	0.51

TSH =Thyroid stimulating hormone