Study | Population | Follow-up | Measurement of severity scores | Outcome measurement | confounding variables | Statistical analysis | Quality score(total) |
---|---|---|---|---|---|---|---|
Goulden/2018 | 2 | 1 | 2 | 2 | 2 | 1 | 10 |
Ranzani/2017 | 2 | 1 | 1 | 2 | 2 | 2 | 10 |
González DelCastillo/2017 | 2 | 2 | 2 | 2 | 1 | 2 | 11 |
Askim/2017 | 2 | 2 | 2 | 2 | 1 | 2 | 11 |
Moskowitz/2017 | 2 | 1 | 2 | 2 | 2 | 1 | 10 |
Willams/2017 | 2 | 1 | 1 | 2 | 2 | 1 | 9 |
Freund/2017 | 2 | 2 | 1 | 1 | 2 | 2 | 10 |
Henning/2017 | 2 | 1 | 1 | 2 | 2 | 1 | 9 |