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CTA research ranking scale.
| Journal Impact Score (2018) | Designated Point Value (1–5) |
|---|---|
| <1.5 | 1 |
| 1.5–2.5 | 2 |
| 2.5–3.5 | 3 |
| 3.5–4.5 | 4 |
| >4.5 | 5 |
| Study Type | Designated Point Value (1–5) |
| Meta-Analysis | 5 |
| RCT | 4 |
| Cohort Study | 3 |
| Case-Control/Cross Sectional | 2 |
| Literature review | 1 |
| Number of Participants | Designated Point Value (1–5) |
| ≥500 | 5 |
| 100–499 | 4 |
| 50–99 | 3 |
| 10–49 | 2 |
| ≤9 | 1 |
