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| Study | Q1 | Q2 | Q3 | Q4 | Q5 | Q6 | Q7 | Q8 | Q9 | Q10 | Q11 | Q12 | Q13 | Q14 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Vijlbrief et al. | Y | Y | CD | Y | N | Y | Y | N | Y | NA | Y | N | Y | Y | 9/13Y |
| Liu et al. | Y | N | NA | CD | N | Y | Y | N | Y | NA | Y | N | Y | Y | 7/12Y |
| Nestaas et al. | Y | Y | Y | Y | Y | Y | Y | N | Y | NA | Y | N | Y | Y | 11/13Y |
Q = question; CD = cannot be determined; NA = not applicable; N: = no; Y = yes.
