| Class |
|
| I |
Intervention is useful and effective |
| IIa |
Evidence is in favour of usefulness and efficacy |
| IIb |
Usefulness and efficacy are less |
|
established |
| III |
Intervention is not useful and may be harmful |
| Level of evidence |
|
| A |
Adequate confirmation from |
|
multicentre, randomised trials |
| B |
Limited evidence derived from a single |
|
randomised, or non-randomised trial |
| C |
Based on opinions of experts, |
|
case reports, or implemented care |
| Generalizability index |
|
| 1 |
Great probability for the results to be extended also to women |
| 2 |
It is possible that results can be |
|
extended also to women |
| 3 |
It is unlikely the results can be |
|
extended also to women |
| 0 |
The extension to women cannot be |
