| Attribute | Coefficient | Significance. |
| Premium costs | −0.029 | 0.092* |
| Deductible | −0.011 | 0.125 |
| Hospital choice |
| |
| Free choice | ||
| Selective healthcare within <30 min. travel distance | 0.391 | 0.017** |
| Selective healthcare within <45 min. travel distance | −0.276 | 0.089* |
| Availability of CQI |
| |
| Sufficient | ||
| Good | 0.238 | 0.047** |
| Very good | 0.433 | 0.000*** |