EXHIBIT 2.
Engagement with rewards program by intervention and comparison populations Intervention population
| Intervention population |
||||||||
|---|---|---|---|---|---|---|---|---|
| Price ($) |
Patient used price shopping support tool for services received (%) |
Intervention population |
||||||
| Mean | 25th percentile | 75th percentile | Mean patient cost sharing ($) | Intervention population | Comparison population | Services result in reward (%) | Average reward ($) | |
| All services | 1,090 | 616 | 1,532 | 224 | 8.2 | 1.4 | 1.9 | 114 |
| IMAGING SERVICES | ||||||||
| CT scan | 996 | 264 | 1,508 | 291 | 6.9 | 0.9 | 1.6 | 113 |
| Mammogram | 211 | 147 | 264 | 23 | 5.2 | 0.7 | 1.0 | 42 |
| MRI | 992 | 481 | 1,577 | 281 | 18.9 | 2.6 | 5.8 | 113 |
| Ultrasound | 270 | 123 | 366 | 125 | 3.3 | 0.9 | 0.4 | 41 |
| Other imaging | 594 | 324 | 817 | 68 | 3.2 | 0.4 | 0.8 | 85 |
| INVASIVE PROCEDURES | ||||||||
| Endoscopy | 1,244 | 772 | 1,524 | 210 | 10.2 | 2.1 | 1.9 | 172 |
| Minor procedures | 1,224 | 545 | 1,774 | 357 | 3.0 | 0.8 | 0.6 | 101 |
| Moderate procedures | 2,824 | 1,735 | 3,931 | 565 | 8.3 | 2.6 | 1.5 | 132 |
| Major procedures | 26,409 | 21,107 | 35,277 | 1,158 | 15.4 | 6.2 | 1.7 | 408 |
SOURCE Authors’ analysis of medical claims data for 2015–17 from Health Care Service Corporation employers. NOTES Prices are in 2016 dollars. A full list of services included in each category is in the appendix (see note 19 in text). Price percentiles were calculated across all markets. Market-specific ratios are in appendix exhibit 2. The intervention and comparison populations are defined in the text. CT is computed tomography. MRI is magnetic resonance imaging.