| Key terms | Number (%) |
| Clinical question | 59 (25.7) |
| Research question | 56 (24.3) |
| PICO/PECO | 39 (17.0) |
| Outcome | 77 (33.5) |
| Bias | 154 (67.0) |
| Confounding | 54 (23.5) |
| Reliability and validity | 94 (40.9) |
| Observational study and intervention Study | 102 (44.3) |
| p value | 127 (55.2) |
| 95% confidence interval | 128 (55.6) |