Table 3.

Characteristics of patients with rheumatoid arthritis compared with controls matched to the rheumatoid arthritis patients for age and sex, outlining the prevalence of venous thromboembolism (TE) and clinical risk factors for venous TE

	Rheumatoid arthritis (n = 243)	Control subjects (n = 243)	p Value
Age (y)*	54.6 (14.2)	50.6 (10.9)	NS
Sex
Male/female (n)	48/195	48/195	Matched
TE
No (%)	5 (2.06)	6 (2.47)	NS
Male/female (n)	0/5	3/3
No of operations*	2.5 (2.1)	1.8 (1.4)	<0.0001
No of injuries*	0.5 (0.7)	0.6 (0.9)	0.0095
Oral contraceptive use† (n)	92	114	0.040
Duration of oral contraceptive use (y)*	10.0 (7.7)	9.1 (7.0)	NS
No of pregnancies*	1.8 (1.5)	1.8 (1.5)	NS
BMI*	25.2 (4.2)	24.5 (4.0)	NS
Smoker (n)	114	110	NS

*Values are mean (SD).

†Includes hormone substitution.

BMI, body mass index.