41 “...: This body of evidence was limited by imprecise effect estimates largely because studies were not powered...”

42 “...For harms of ECG, prospective cohort studies, large retrospective cohort studies, and case-control...”

43 “...For treatment benefits and harms, we included trials of anticoagulation treatment for primary...”

44 “... review. DATA SOURCES: MEDLINE(r), CINAHL(r), Cochrane Library, Cochrane Clinical Trials Registry, PILOTS...”

45 “... review. DATA SOURCES: MEDLINE(r), CINAHL(r), Cochrane Library, Cochrane Clinical Trials Registry, PILOTS...”

46 “...-language studies using a priori criteria. Eligible studies included randomized, controlled trials (RCTs...”

47 “...-language studies using a priori criteria. Eligible studies included randomized, controlled trials (RCTs...”

48 “...Eligible studies included randomized controlled trials (RCTs), nonrandomized trials, and cohort...”

49 “...Eligible studies included randomized controlled trials (RCTs), nonrandomized trials, and cohort...”

50 “... was similar, and (4) studies were double-blinded randomized controlled trials of low or medium risk of bias...”

51 “... was similar, and (4) studies were double-blinded randomized controlled trials of low or medium risk of bias...”

52

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