Follow-up period appropriate to the aim of the study
0
0
0
0
0
Loss to follow-up less than 5%
0
0
1
0
1
Prospective calculation of the study size
0
0
0
0
0
Total score
7
8
9
7
9
The items are scored 0 (not reported), 1 (reported but inadequate), or 2 (reported and adequate). The total ideal score for each noncomparative study is 16.