Table 2. Annual changes of doctor density and urologist density according to metropolitan and non-metropolitan areas.

		beta	se	Lower	Upper	p-value
Doctor	intercept	163.1	6.1	150.9	175.3	< 0.001*
	area(non-metropolitan)	–39.4	6.0	–51.3	–27.5	< 0.001*
	year†	2.4	2.1	–1.7	6.6	0.249
Urologist	intercept	4.1	0.1	3.9	4.3	< 0.001*
	area(non-metropolitan)	–1.0	0.1	–1.2	–0.7	< 0.001*
	year†	0.1	0.0	0.0	0.2	0.002*

^†Year of 2007 was used as reference year.

*Statistically significant.