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Table 2 Description of topics of included references (only values above 5% are shown)

From: Optimal database combinations for literature searches in systematic reviews: a prospective exploratory study

Department (N = 55)
 Surgery 13 (24%)
 Epidemiology 10 (18%)
 Internal medicine 3 (5%)
 Orthopedics 3 (5%)
Patient (N = 52)
 Neoplasms 6 (12%)
 Wounds and injuries 6 (12%)
 Musculoskeletal diseases 5 (10%)
 Cardiovascular diseases 5 (10%)
 Nutritional and metabolic diseases 5 (10%)
Intervention (N = 31)
 Chemicals and drugs category 12 (39%)
 Surgical procedures, operative 8 (26%)
 Food and beverages 2 (6%)
 Biological factors 2 (6%)
Domain (N = 54)
 Therapy 19 (35%)
 Etiology 13 (24%)
 Epidemiology 6 (11%)
 Diagnosis 6 (11%)
 Management 5 (9%)
 Prognosis 5 (9%)
Study types (N = 58)
 No limits mentioned 48 (83%)
 RCTs 5 (9%)
 RCTs and cohort studies/case control studies 5 (9%)