Table 5.

Geographical variability tests of local coefficients.

Variable	F	DOF for F test	DIFF of criterion
City level	4.7353	2.937 330.014	−7.8764
Number of medical colleges	4.1662	2.419 330.014	−5.0514
Urbanization rate	1.6604	3.664 330.014	2.2508
Permanent population	6.5407	2.642 330.014	−12.140798
Population density	6.6972	2.014 330.014	−9.6638
GDP per capita	2.4049	3.345 330.014	−0.6333
Altitude	2.4942	4.203 330.014	−1.1906

DIFF of Criterion is positive, indicating that there is no significant spatial variation in variable coefficients.