Table 2.

Variables associated with self-referral.

Simple Regression Models			Multivariable Logistic Regression Model
Variable	Odds Ratio (OR) 1	95% CI 1	Odds Ratio (OR) 1	95% CI 1
Sex [Female vs. Male]	0.79	0.66–0.94	0.93	0.77–1.12
Age categories 2
50–59	0.76	0.57–1.0	0.76	0.56–1.03
60–69	0.65	0.48–0.87	0.70	0.52–0.95
70–79	0.51	0.39–0.68	0.56	0.42–0.76
[80+]	0.31	0.22–0.42	0.34	0.24–0.47
Region [Rural vs. urban]	2.24	1.89–2.66	2.43	2.00–2.94
Arterial Hypertension [Yes vs. no]	0.80	0.64–0.99	0.85	0.67–1.09
Hypercholesterolemia [Yes vs. no]	1.21	1.03–1.42	0.82	0.68–1.00
Diabetes [Yes vs. no]	0.81	0.68–0.96	0.97	0.81–1.17
BMI 3
Overweight	1.21	0.98–1.49	1.13	0.92–1.40
Obesity	1.24	1.00–1.55	1.14	0.92–1.43

Observations: 4037. ¹ OR = odds ratio; CI = confidence interval; ² reference group: age group 25–49; ³ reference group: BMI Normal weight or less.