Revealed factors
| Factor | Description |
| Self-assessment of illness | Severity of illness, or if the disease is a special disease. |
| Health literacy | The ability to understand basic health information and make appropriate decisions. |
| Facility design | The layout and complexity of the facility. |
| Service convenience | Service procedure, waiting time or total time consumed for one visit. |
| OOP cost | Out-of-pocket cost per visit. |
| Medical staff | The attributes that involve medical staff, including their medical skill, seniority of the medical personnel or patient–doctor relationship. |
| Drug | Drug variety and availability. |
| Equipment | The availability of enough medical equipment, especially the advanced equipment. |
| Transportation convenience | Transportation time from home to the facility. |
| Self-evaluated clinical outcomes | Self-evaluated clinical outcomes such as effectiveness or efficacy of care. |