Disagreements in meta-analyses using outcomes measured on continuous or rating scales: observer agreement study

Objective To study the inter-observer variation related to extraction of continuous and numerical rating scale data from trial reports for use in meta-analyses. Design Observer agreement study. Data sources A random sample of 10 Cochrane reviews that presented a result as a standardised mean difference (SMD), the protocols for the reviews and the trial reports (n=45) were retrieved. Data extraction Five experienced...