Table 2.

Association Between Weekend Visits and Sociodemographic Factors

	Odds ratio for weekend visits	95% confidence interval
Race/ethnicity
White	Ref
Black	0.86	0.68–1.08
Hispanic	1.38	1.15–1.66
Other	1.67	1.33–2.09
Median household income in patient’s ZIP code
Below $32,793	Ref
$32,794–$40,626	0.89	0.72–1.10
$40,627–$52,387	0.88	0.71–1.09
$52,388 or more	1.27	1.03–1.55
Urban-rural classification of patient’s ZIP code
Large central metro (inner city)	Ref
Large fringe metro (suburban)	1.63	1.38–1.93
Medium metro	0.72	0.59–0.88
Small metro	0.52	0.37–0.73
Non-metro (micropolitan and non-core)	0.44	0.33–0.58
Expected source of payment is Medicaid or CHIP/SCHIP
No	Ref
Yes	0.89	0.74–1.07
Geographic region of practice
Northeast	Ref
Midwest	0.78	0.65–0.94
South	0.66	0.55–0.80
West	0.75	0.61–0.91