Daikenchuto for postoperative adhesive small bowel obstruction: A systematic review and meta-analysis

Table 2 Critical appraisal for randomized controlled trials using critical appraisal skills program

	Oyabu et al[23]	Kubo et al [24]	Itoh et al [25]
1 Was the assignment of patients to treatments randomized?	Y	Y	Y
2 And if so, was the randomization list concealed (blinded or masked) to those deciding on patient eligibility for the study?	Y	Y	-
3 Were all patients analysed in the groups to which they were randomized (was an “intention to treat” analysis used)?	Y	N	Y
4 Were patients in the treatment and control groups similar with respect to known prognostic factors?	Y	Y	Y
5 Were patients, clinicians and outcome assessors kept “blind” to which treatment was being received?	-	-	-
6 Was follow-up complete?	Y	Y	Y

Y: Yes; N: No.