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Table 3 Highest frequency terms identified in individual subsets and their performance in the full lost set

From: OvidSP Medline-to-PubMed search filter translation: a methodology for extending search filter range to include PubMed's unique content

Terms Record occurrence in individual subsets Record occurrence in full lost set (N = 834)
N (%) N (%)
Heart failure subset (n = 346)   
 Cardiac failure 33 (9.5%) 38 (4.6%)
 Cardiac resynchronization 30 (8.7%) 41 (4.9%)
Left ventricular dysfunction subset (n = 444)   
 LV dysfunction 29 (6.5%) 30 (3.6%)
 Left ventricular systolic dysfunction 29 (6.5%) 30 (3.6%)
 Left ventricular diastolic dysfunction 23 (5.2%) 23 (2.8%)
Cardiomyopathy subset (n = 76)   
 Chagas disease 14 (18.4%) NA