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

Table 3 Critical appraisal for cohort studies using newcastle ottawa quality assessment scale

	Moriwaki et al[26]	Furukawa et al [27]	Yasunaga et al [28]
Selection
Representativeness of the exposed cohort			Y
Selection of non-exposed cohort	Y	Y	Y
Ascertainment of exposure	Y	Y	Y
Demonstration that outcome of interest was not present at start of study	Y	Y	Y
Comparability
Comparability of cohorts on the basis of the design or analysis	Y	Y	Y
Outcome
Assessment of outcome
Was follow-up long enough to occur	Y	Y	Y
Adequacy of follow up of cohorts	Y	Y	Y

Y: Yes.