model estimates for univariate probit with Newley–West standard errors and bivariate panel probit model for efficiency and uncompensated care provision
Medicare inpatient days/total inpatient days
Medicaid inpatient days/total inpatient days
1 if hospital is for profit; 0 otherwise
1 if hospital is a member of a multihospital system;
0 otherwise
1 if hospital is in urban area; 0 otherwise
1 if hospital has residency programs or is