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Table 1 Data extracted from methods studies evaluating search filters for SRs

From: Toward a comprehensive evidence map of overview of systematic review methods: paper 1—purpose, eligibility, search and data extraction

Data extracted Description
Study characteristics Citation details
Primary objective
Search filter evaluation details Type of search filter evaluation (categorised as single search filter evaluation, comparative search filter evaluation, comparative database evaluation)
Health field filter designed for
Number of filters evaluated
Number of filters developed by author
Databases filters tested in and the interface(s)
Technique to identify and/or create gold standard
Sample size of the gold standard set or validation set
Performance measures (e.g. sensitivity/recall, specificity)
Search dates of the gold standard or validation set
Name of filters evaluated
Risk of bias criteria Existence of a protocol
Validation on a data set distinct from the derivation set