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Table 1 Characteristics of the Included Systematic Reviews

From: An alternative to the hand searching gold standard: validating methodological search filters using relative recall

Characteristic n (total = 105) %
Year of publication or substantive update   
   Median 2001  
   Interquartile range 1999–2001  
Focus of the review   
   Treatment 89 84.8
   Prevention 14 13.3
   Diagnosis 1 1.0
   Other 1 1.0
Study designs included   
   RCT only 55 52.4
   RCT and qRCT 39 37.1
   RCT and other controlled trials 11 10.5
Meta-analysis undertaken 78 74.3
Review groups with 4 or more included reviews*   
   Musculoskeletal Injuries 22 21.0
   Eyes and Vision 12 11.4
   Renal 9 8.6
   Prostatic Diseases and Urologic Cancers 8 7.6
   Back 6 5.7
   Schizophrenia 6 5.7
   Depression, Anxiety and Neurosis 5 4.8
   Infectious Diseases 4 3.8
   Upper Gastrointestinal and Pancreatic Diseases 4 3.8
   Other 29 27.6
Number of included studies per review   
   Median 12  
   Interquartile range 5.0–19.5  
  1. Other group representation is as follows: Menstrual Disorders, Skin (3 reviews each), Effective Practice and Organisation of Care, Gynaecological Cancer, Heart, Hepato-Bilary, Hypertension, Lung Cancer (2 reviews each), Acute Respiratory Infections, Colorectal Cancer, Drugs and Alcohol, Ear, Nose and Throat, Fertility Regulation, HIV/AIDs, Metabolic and Endocrine Disorders, Movement Disorders, Oral Health, Pregnancy and Childbirth, Stroke (1 review each).