Adjusted hospital cost ratios after subarachnoid hemorrhage.

Table shows only variables with at least 0.05 significance level in one of the models.aAdjusted cost ratio gives the ratio of the expected cost of a group with respect to the reference category. An adjusted cost ratio of 1.5 means that the expected cost is 150% of the reference category. Adjusted cost ratios were calculated using coefficients that were obtained with weighted multivariable gamma regression, yielding nationally representative estimates for the U.S. population. The models included demographic and socioeconomic information, hospital characteristics, comorbid conditions and hospital mortality status as described in the methods.