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Efficient strategies to find diagnostic test accuracy studies in kidney journals
Author(s) -
Rogerson Thomas E,
Ladhani Maleeka,
Mitchell Ruth,
Craig Jonathan C,
Webster Angela C
Publication year - 2015
Publication title -
nephrology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 61
eISSN - 1440-1797
pISSN - 1320-5358
DOI - 10.1111/nep.12445
Subject(s) - medicine , medline , test (biology) , diagnostic accuracy , diagnostic test , medical physics , confidence interval , pediatrics , paleontology , political science , law , biology
Aim Nephrologists looking for quick answers to diagnostic clinical questions in MEDLINE can use a range of published search strategies or C linical Q uery limits to improve the precision of their searches. We aimed to evaluate existing search strategies for finding diagnostic test accuracy studies in nephrology journals. Methods We assessed the accuracy of 14 search strategies for retrieving diagnostic test accuracy studies from three nephrology journals indexed in MEDLINE . Two investigators hand searched the same journals to create a reference set of diagnostic test accuracy studies to compare search strategy results against. Results We identified 103 diagnostic test accuracy studies, accounting for 2.1% of all studies published. The most specific search strategy was the N arrow C linical Q ueries limit (sensitivity: 0.20, 95% CI 0.13–0.29; specificity: 0.99, 95% CI 0.99–0.99). Using the Narrow C linical Q ueries limit, a searcher would need to screen three (95% CI 2–6) articles to find one diagnostic study. The most sensitive search strategy was van der W eijden 1999 E xtended (sensitivity: 0.95; 95% CI 0.89–0.98; specificity 0.55, 95% CI 0.53–0.56) but required a searcher to screen 24 (95% CI 23–26) articles to find one diagnostic study. B achmann 2002 was the best balanced search strategy, which was sensitive (0.88, 95% CI 0.81–0.94), but also specific (0.74, 95% CI 0.73–0.75), with a number needed to screen of 15 (95% CI 14–17). Conclusion Diagnostic studies are infrequently published in nephrology journals. The addition of a strategy for diagnostic studies to a subject search strategy in MEDLINE may reduce the records needed to screen while preserving adequate search sensitivity for routine clinical use.