Table 4.

The total arthritis was analysed stratified by gender, age and race

	Model 1 (OR, 95% CI, P value)	Model 2 (OR, 95% CI, P value)	Model 3 (OR, 95% CI, P value)
Gander
Male	1	1	1
Female	0.753 (0.633 to 0.896) 0.002	0.730 (0.608 to 0.877) 0.001	0.712 (0.582 to 0.872) 0.001
Age
20–29	1	1	1
30–39	1.788 (1.078 to 2.966) 0.025	1.718 (1.003 to 2.940) 0.048	1.181 (0.635 to 2.199) 0.595
40–49	1.957 (1.285 to 2.981) 0.002	2.002 (1.941 to 3.358) 0.009	1.324 (0.721 to 2.432) 0.362
50–59	1.409 (0.989 to 2.008) 0.057	1.472 (0.963 to 2.251) 0.074	0.975 (0.582 to 1.632) 0.932
60–69	1.034 (0.718 to 1.489) 0.856	1.076 (0.700 to 1.653) 0.737	0.721 (0.436 to 1.192) 0.200
70+	1.106 (0.789 to 1.549) 0.556	1.122 (0.725 to 1.737) 0.602	0.739 (0.426 to 1.282) 0.278
Race
Other race	1	1	1
Hispanic	1.604 (1.136 to 2.264) 0.008	1.582 (1.056 to 2.371) 0.027	1.456 (0.962 to 2.203) 0.075
Non-Hispanic white	0.895 (0.696 to 1.150) 0.381	1.040 (0.786 to 1.376) 0.780	0.971 (0.732 to 1.288) 0.839
Non-Hispanic black	2.017 (1.471 to 2.765) 0.000	2.305 (1.622 to 3.276) 0.000	2.203 (1.536 to 3.160) 0.000

Model 1: adjusted for age, gender and race.

Model 2: adjusted for age, gender, race, education level, income to poverty ratio, body mass index (BMI), diabetes, hypertension and smoking record.

Model 3: adjusted for age, gender, race, education level, income to poverty ratio, BMI, hypertension, smoking, cholesterol, low-density lipoprotein, high-density lipoprotein, triglyceride, creatinine and albumin.