Table 1 Symbols used to denote strength of recommendation and level of evidence
From: Clinical management guidelines for Friedreich ataxia: best practice in rare diseases
Strength of recommendation | Symbol | Level of evidence | Symbol |
|---|---|---|---|
Strong for intervention | ↑↑ | High | ⨁⨁⨁⨁ |
Conditional for intervention | ↑ | Moderate | ⨁⨁⨁◯ |
Neither intervention nor comparison | – | Low | ⨁⨁◯◯ |
Conditional against intervention | ↓ | Very low | ⨁◯◯◯ |
Strong against intervention | ↓↓ |