The radiology costs, pharmacy costs, total variable cost, and total costs were reported.
In analysis A, the average total cost was $21,189 for the study group and $51,790 for the control group.
The average variable costs were $14,033 for the study group and $34,919 for the control group.
The variable pharmacy costs were $2,331 for the study group and $5,931 for the control group.
The variable radiology costs were $580 for the study group and $1,105 for the control group.
All of the average costs were lower for the study group, but no difference was statistically significant.
In analysis B, the average total cost was $13,294 for the study group and $18,601 for the control group. The difference was $5,308, (p=0.008).
The average variable costs were $5,889 for the study group and $8,515 for the control group. The difference was $2,626, (p=0.008).
The variable pharmacy costs were $1,227 for the study group and $1,702 for the control group, (p=0.104).
The variable radiology costs were statistically significantly lower in the study group ($233) than in the control group ($328). The difference was $95, (p=0.043).
In analysis C, the total costs were $16,106 in the study group and $13,294 in the control group.
The control group had a severity-adjusted variable cost of $7,355, compared with $5,889 in the study group. This represented a difference of $1,466 per patient over that for the study group.
The severity-adjusted variable pharmacy costs were $1,466 for the control group and $1,227 for the study group. This represented an increase of $239 per patient over that for the study group.
The variable radiology costs were $222 in the study group and $274 in the control group.