Table 3.

Assessment of non‐randomized study quality (MINORS)

MINORS criteria† Clearly stated aim Inclusion of consecutive patients Prospective data collection Appropriate end‐points, intention‐to‐treat basis Unbiased assessment of study end‐point Appropriate follow‐up period to meet aim of study Less than 5% loss to follow‐up Prospective calculation of study size

	MINORS†	Quality assessment
IBD
Perera et al.42	8	Fair
Vasant et al.54	7	Fair
Pouch
Hull et al.53	8	Fair
Quinn et al.39	6	Poor
Segal et al.55	6	Poor

^† Each item is scored 0 (not reported), 1 (reported but inadequate), or 2 (reported and adequate) with an ideal score of 16.

MINORS, methodological index for nonrandomized studies.