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Risk of bias in systematic reviews
| First author, year | Study eligibility criteria | Identification and selection of studies | Data collection and study appraisal | Synthesis and findings | Risk of bias |
|---|---|---|---|---|---|
| Kálcza-Jánosi [10] | - | - | - | - | - |
| Mansur [11] | + | - | ? | + | - |
| Monette [12] | + | - | - | - | - |
| Palta [13] | + | + | ? | + | ? |
| Papunen [14] | + | - | - | + | - |
| Pelimanni [15] | + | - | - | + | - |
| Sadanand [16] | + | - | - | - | - |
| van den Berg [17] | + | - | - | - | - |
| Vincent [18] | + | - | - | + | - |
Note + = low risk; - = high risk;? = unclear risk
