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Fig. 3 | BMC Medical Research Methodology

Fig. 3

From: A comparison of metrics and performance characteristics of different search strategies for article retrieval for a systematic review of the global epidemiology of kidney and urinary diseases

Fig. 3

Number of published articles by search strategy and year of publication. a Number of records initially retrieved by search (step 2); b Number of records classified as potentially useful (step 3); c Number of useful full-text articles with data extracted (step 7). Only completely covered by the search strategies years are shown

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