Methods used to measure variables
| Number of studies | |
|---|---|
| Patient experience variables | |
| Survey | 31 |
| Interviews | 2 |
| Medical records | 1 |
| Effectiveness and safety variables | |
| Survey for self-rated healthcare | 12 |
| Other survey | 14 |
| Medical records | 3 |
| Data-monitoring quality of care delivery (eg, audit, HQA, HEDIS) | 3 |
| Care provider outcome data | 3 |
| Physical examination | 1 |
| Patient interviews | 2 |
HQA, Hospital Quality Alliance; HEDIS, Healthcare Effectiveness Data and Information Set.