Table 2.

Association between distance to clinic and other characteristics with follow-up visit compliance

	Crude model			Full model*			Final model
	OR	95% CI	P value	OR	95% CI	P value	OR	95% CI	P value
Follow-up visit			<.001			<.001			<.001
6 mo (referent)
1 yr	.55	.22–1.32		.51	.21–1.29		.51	.21–1.26
2 yr	.13	.05–.37		.11	.04–.31		.11	.04–.30
Age at surgery	.76	.60–.97	.075	.65	.45–.93	.046	.64	.44–.92	.044
Gender			.359			.287
Male	1.68	.56–5.05		2.04	.52–7.93
Female (referent)
Race			.892			.615
White (referent)
Black	1.09	.32–3.77		.54	.08–3.52
Distance from clinic (miles)			.872			.587			.680
<50 (referent)
50–99	1.17	.26–5.32	.86		.13–5.56		.72	.12–4.53
100–199	.91	.29–2.86	.46		.12–1.78		.51	.14–1.83
≥200	1.42	.51–3.97	.46		.11–1.87		.55	.16–1.93
Baseline BMI	1.01	.97–1.05	.776	1.00	.96–1.05	.875
Insurance			.979			.795
Private (referent)
Public	1.01	.43–2.40		.86	.27–2.68
Year of surgery			.438			.582			.451
2001–2003	.85	.25–2.91		1.54	.35–6.83		1.92	.42–8.78
2004	1.93	.56–6.66		2.69	.51–14.14		3.25	.65–16.28
2005	.96	.25–3.66		.97	.26–3.70		1.20	.30–4.89
2006–2007 (referent)

OR = odds ratio; CI = confidence interval; BMI = body mass index.

^*Full model included all variables listed in Table 2.