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Table 1 Two levels of inclusion and exclusion criteria applied to the search results

From: Sample size and number of outcome measures of veterinary randomised controlled trials of pharmaceutical interventions funded by different sources, a cross-sectional study

Level 1: Inclusion criteria for publications

Level 1: Exclusion criteria for publications

Species of interest is cats, dogs, horses, cattle or sheep

Not about cats, dogs, horses, cattle or sheep

Published in 2011

E published only in 2011 if full publication occurred in a different calendar year

RCT according to PubMed publication types and the Cochrane definition

Not an RCT (not indexed as an RCT by PubMed or not fulfilling Cochrane definition of an RCT)

Treatment of interest is a pharmaceutical intervention

Treatment of interest is not a pharmaceutical agent e.g. nutritional, surgical, animal husbandry etc

Level 2: Inclusion criteria for analysis of pharmaceutical RCTs

Level 2: Exclusion criteria for analysis of pharmaceutical RCTs

Primary aim is to assess efficacy

Primary aim was not to assess efficacy (pharmacokinetic/dynamic studies, safety studies, physiological effects, resistance testing, testing routes of administration only, testing timing of administration only)

Identifiable treatment or protocol of interest

Treatment or protocol of interest could not be identified

Single dose of the treatment of interest used

Multiple doses of the treatment of interest used/dose finding studies

Published in English

Not available in English