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. 2002 Jan 21;2002(1):CD001821. doi: 10.1002/14651858.CD001821

2. Validity Assessment: description of criteria.

ITEM Description
V1 Was a method of randomisation performed ?
V2 Was the treatment allocation concealed ?
V3 Were the intervention groups similiar at baseline regarding prognostic factors ?
V4 Was the care provider blinded for the allocated intervention ?
V5 Were co‐interventions avoided or standardized ?
V6 Was adherence to interventions acceptable in all groups ?
V7 Was the patient blinded to the allocated intervention ?
V8 Was the withdrawal/drop‐out rate described and acceptable ?
V9 Was the outcome assessor blinded to the intervention ?
V10 Was timing of outcome assessment comparable in both groups ?
V11 Did the anlaysis include an intention‐to‐treat analysis ?