Exhibit 3.
Savings | |
Blood pressure reduction (among 237 patients) | |
Coronary heart disease (CHD) | |
Baseline incidence per 1000 person-years | 11.4 |
Relative risk reduction of CHD | 32.2% |
Cases avoided per 1000 person-years | 3.67 |
Cases avoided per 593 Person-years (our sample) | 2.17 |
Total CHD cost per case | $85,181 |
Total CHD cost avoided | $185,020 |
Stroke | |
Baseline incidence per 1000 person-years | 3.3 |
Relative risk reduction | 44.6% |
Cases avoided per 1000 person-years | 1.47 |
Cases avoided per 593 person-years (our sample) | 0.87 |
Total stroke cost per case | $57,618 |
Total stroke cost avoided | $50,234 |
Subtotal: savings from blood pressure reduction | $235,254 |
Emergency Department (ED) visits avoided | |
Number of patients who reported that they would have visited ED if they had not visited mobile clinic | 2,851 |
Cost per avoidable ED visit | $474 |
Subtotal: ED costs avoided | $1,351,546 |
Total savings | $1,586,800 |
Expenditures | |
Total mobile clinic expenditures (January 2010–June 2012) | $1,222,886 |
Return-on-investment (Savings / Expenditures) | 1.3 |
Source: Authors’ analysis using data reported by the National Heart, Lung, and Blood Institute, Massachusetts Department of Health Care Financing and Policy, published event-based cost estimates, and the mobile health clinic’s cost data.
Note: Methods for the step-by-step calculation of return-on-investment are described in Appendix Exhibit 2.