Table 6.
Study title | 1. Were the criteria for inclusion in the sample clearly defined? | 2. Were the study subjects and the setting described in detail? | 3. Was the exposure measured in a valid and reliable way? | 4. Were objective, standard criteria used for measurement of the condition? | 5. Were confounding factors identified? | 6. Were strategies to deal with confounding factors stated? | 7. Were the outcomes measured in a valid and reliable way? | 8. Was appropriate statistical analysis used? |
---|---|---|---|---|---|---|---|---|
Raza et al [28] |
1 |
1 |
1 |
1 |
2 |
2 |
1 |
1 |
Averame et al [31] |
1 |
2 |
1 |
1 |
3 |
3 |
1 |
1 |
Bonavia et al [32] |
1 |
1 |
2 |
1 |
3 |
3 |
2 |
3 |
Thijssing et al [34] |
1 |
1 |
1 |
1 |
3 |
2 |
1 |
1 |
Fadaizadeh et al [36] |
1 |
1 |
1 |
1 |
2 |
2 |
1 |
1 |
Metting et al [35] | 1 | 1 | 3 | 1 | 2 | 2 | 3 | 1 |
*1 = Yes, 2 = No, 3 = Unclear, 4 = not applicable.