Table 1.
The Limitation Scoring Index is a Numeric Limitation Risk Assessment Score to Rank Risk Categories and Discounting Probability of Validity and Conclusions. The More Limitations in a Study, the Greater the Risk of Unreliable Findings and Conclusions
| Number of limitations | Word description of discounting | Proposed percent discounting of conclusions | Outcome probability | Increasing level of less reliable conclusions |
|---|---|---|---|---|
| 0 | Unknown unknowns | 1–10% | May have valid conclusion(s) | Warning |
| 1–2 | Some | 15–25% | ↓ | ↓ |
| 3–4 | Probable | 35–45% | ↓ | Caution |
| 5–6 | Likely | 70–80% | ↓ | ↓ |
| 7–8 | Highly likely | 85–95% | ↓ | ↓ |
| >8 | Certain | 97–100% | Very questionable conclusion(s) | Danger |