Table 2 Result of the quality assessment of the studies included in the present systematic review
Study | Domains of bias | ||||||
|---|---|---|---|---|---|---|---|
Bias due to confounding | Bias in selection of participants | Bias in measurement of interventions | Bias due to departures from intended interventions | Bias due to missing data | Bias in measurement of outcomes | Bias in selection of reported results | |
Zarei | Low risk | Moderate risk | Low risk | Low risk | Moderate risk | Low risk | Moderate risk |
Piroozi | Low risk | Low risk | Low risk | Moderate risk | Low risk | Low risk | Low risk |
Seidali | Low risk | Low risk | Low risk | Low risk | Moderate risk | Moderate risk | Low risk |
Rooeintan | Low risk | Low risk | Moderate risk | Low risk | Moderate risk | Low risk | Moderate risk |
Dehghan | Low risk | Low risk | Low risk | Low risk | Low risk | Moderate risk | Moderate risk |
Fouladi | Low risk | Moderate risk | Moderate risk | Low risk | Low risk | Moderate risk | Moderate risk |
Zaboli | Low risk | Low risk | Low risk | Low risk | Moderate risk | Low risk | Low risk |
Zandian | Low risk | Low risk | Moderate risk | Low risk | Low risk | Moderate risk | Moderate risk |
Karami Matin | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk |
Rezaie | Low risk | Low risk | Low risk | Moderate risk | Low risk | Low risk | Low risk |
Yusefi | Low risk | Low risk | Low risk | Moderate risk | Low risk | Moderate risk | Moderate risk |
Jabbari | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk |