Methodology checklist - intervention studies
Study reference There was adequate concealment of allocation Participants receiving care were kept 'blind' to treatment allocation Care providers were kept 'blind' to treatment allocation Outcome assessors were kept 'blind' to participants’ exposure to the intervention Use of unvalidated or intermediate Selective outcome reporting on basis of the results Loss to follow-up/incomplete outcome data described and acceptable Analysis by intention to treat Other limitations Comments
Skirrow, 2011 no no no no no no yes no yes

- small study (n=53)

- control group differs in size and pathologic diagnosis

Wiebe, 2001 yes no no yes no no yes yes yes

- small study population (n=80)