Strength of evidence | Question | Meaning |
---|---|---|
I | Effectiveness | Multiple Randomized Controlled Trials or Systematic Reviews of such studies |
 | Diagnosis | Multiple Randomized Controlled Trials, or Cross-sectional Studies with verification by reference (gold) standard, or Systematic Reviews of such studies |
II | Effectiveness | One Randomized Controlled Trial |
 | Diagnosis | One Randomized Controlled Trial, or one Cross-sectional Study with verification by reference (gold) standard |
III | Effectiveness | Multiple Controlled nonrandomized Studies or Systematic Reviews of such studies |
 | Diagnosis | Multiple Cross-sectional Studies with incomplete & unbalanced verification with reference (gold) standard |
IV | Effectiveness | Other studies |
 | Diagnosis |  |
V | Effectiveness | SOSORT Consensus with more than 90% of agreement |
 | Diagnosis |  |
VI | Effectiveness | SOSORT Consensus with 70 to 89% of agreement |
 | Diagnosis |  |