Table 2.

Weighted univariate logistic analysis of RA

Character	OR 95% CI	P-value
Age
Below 60	ref	ref
Over 60	4.501 (4.024, 5.034)	<0.0001
BMI
Below 25	ref	ref
25–30	1.224 (1.064, 1.409)	0.005
Over 30	2.018 (1.758, 2.317)	<0.0001
PIR
Below 1.3	ref	ref
1.3–3.5	0.698 (0.601, 0.810)	<0.0001
Over 3.5	0.476 (0.406, 0.557)	<0.0001
Gender
Male	ref	ref
Female	1.545 (1.377, 1.733)	<0.0001
Race
White	ref	ref
Black	1.485 (1.307, 1.687)	<0.0001
Mexican American	0.684 (0.580, 0.806)	<0.0001
Other	0.760 (0.633, 0.912)	0.003
Edu
Under high school	ref	ref
High school or equivalent	0.719 (0.631, 0.818)	<0.0001
College graduate or above	0.453 (0.391, 0.524)	<0.0001
Hypertension
No	ref	ref
Yes	3.925 (3.461, 4.450)	<0.0001
Diabetes
No	ref	ref
Pre-diabetes	1.753 (1.474, 2.084)	<0.0001
Diabetes	3.043 (2.711, 3.416)	<0.0001
Hyperlipidemia
No	ref	ref
Yes	2.041 (1.770, 2.354)	<0.0001
Alcohol use
Never	ref	ref
Former	1.589 (1.341, 1.882)	<0.0001
Mild	0.730 (0.612, 0.869)	<0.001
Moderate	0.557 (0.453, 0.684)	<0.0001
Heavy	0.511 (0.420, 0.621)	<0.0001
Smoke
Never	ref	ref
Former	1.968 (1.704, 2.272)	<0.0001
Now	1.626 (1.408, 1.878)	<0.0001
Work activity
No	ref	ref
Yes	0.753 (0.678, 0.837)	<0.0001
SII	1.296 (1.166, 1.441)	<0.0001