Table 1.
Plan affordability and insurer composition by insurer participation and time, N = 15 222
| Insurer participation | Year | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3+ | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | |
| Affordability (Monthly $) | |||||||||
| Minimum silver premium | 428.28 | 363.77 | 294.09 | 269.45 | 268.69 | 292.26 | 356.93 | 468.17 | 452.1 |
| premium spread | 111.94 | 95.81 | 65.32 | 58.65 | 57.36 | 55.23 | 68.32 | 133.52 | 147.94 |
| Insurer composition | |||||||||
| Blue cross blue shield | 73.11 | 75.42 | 87.09 | 85.37 | 85.30 | 83.71 | 84.92 | 65.69 | 73.34 |
| big four | 4.07 | 30.90 | 46.64 | 37.86 | 56.34 | 68.83 | 13.00 | 2.96 | 3.62 |
| Medicaid managed care | 16.24 | 35.86 | 55.91 | 33.00 | 38.29 | 39.11 | 36.19 | 40.00 | 44.90 |
| Other | 6.59 | 38.36 | 75.15 | 52.13 | 50.08 | 45.60 | 39.42 | 37.38 | 43.86 |
Premiums are inflated to 2019 dollars using the medical CPI. Big four insurers include Aetna, Cigna, Humana, and United. Blue Cross Blue Shield includes all affiliated insurers. Medicaid managed care includes nonbig four, non‐Blue Cross Blue Shield insurers with a presence in their state's Medicaid managed care market.