Fig. 2From: Effect of patient’s age on the profitability of inpatient cardiac catheterization: a contribution margin analysis of frequently performed procedures over a 5-year periodDistribution of contribution margin per day revenues across decades of age and corresponding number of patients. The contribution margin per day revenues of the total patient group and the P1-P3 subgroups form convex shaped curves. Their peaks indicate that the highest per day contribution margins can be realized in age-groups between 40 and 70 years. The right diagram shows that the decade groups over 60 years are the numerically most important groupsBack to article page