| Medicare supplemental insurance | Commercial insurance | ||||
---|---|---|---|---|---|---|
 | DN-only | DN-DA |  | DN-only | DN-DA |  |
# Observations | 16,831 | 1,699 | p-value* | 17,205 | 3,105 | p-value* |
Age (mean, SD) | 75.6 (6.1) | 75.4 (6.3) | 0.44 | 55.0 (7.4) | 53.7 (7.7) | < 0.05 |
Male (%) | 52.9 | 44.2 | < 0.05 | 53.7 | 41.1 | < 0.05 |
Plan types (%)** | Â | Â | < 0.05 | Â | Â | 0.54 |
   Comprehensive | 65.2 | 60.4 |  | 16.1 | 17.3 |  |
   PPO | 21.6 | 21.9 |  | 47.3 | 45.8 |  |
   HMO | 11.8 | 16.5 |  | 20.3 | 22.8 |  |
   Other | 0.3 | 0.1 |  | 15.6 | 13.3 |  |
   Missing | 1.1 | 1.0 |  | 0.8 | 0.9 |  |
Region (%) | Â | Â | < 0.05 | Â | Â | 0.19 |
   Northeast | 10.8 | 8.5 |  | 8.1 | 8.0 |  |
   North central | 41.3 | 42.1 |  | 29.9 | 31.4 |  |
   South | 30.2 | 28.4 |  | 43.2 | 38.6 |  |
   West | 16.7 | 20.1 |  | 18.0 | 21.1 |  |
   Missing | 1.0 | 0.9 |  | 0.7 | 0.9 |  |