Table 5. Critical Access Hospital Total Margin per Surgical Specialty Offered.

Per unit of surgical services offered, total margin increased 0.0073 (p=0.1342). Total margin per surgical specialty offered was also analyzed for each of the co-variates. The “Intercept” parameter is the predicted value for the model when all other parameters are set to zero. The column titled “Parameter Estimate” demonstrated the change in the dependent variable according to every one-unit change per predictor variable while all other predictors are kept constant.    

Parameter	Parameter Estimate	Standard Error	P-value
Intercept	0.0152	0.0282	0.5895
Number of Surgical Services	0.0073	0.0049	0.1342
Region (MW vs W)	0.0044	0.0106	0.6825
Region (NE vs W)	0.0177	0.0178	0.3206
Region (S vs W)	-0.005	0.0114	0.6616
Occupancy Rate	0.0001	0.0002	0.5663
Case Mix Index (CMI)	-0.0164	0.256	0.5205