Table 3.

Top three search strategies yielding highest sensitivity (keeping specificity >50%) with combinations of terms

Search strategy in Ovid format	Sensitivity (%) (95% CI)	Specificity (%) (95% CI)	Precision (%) (95% CI)	Accuracy (%) (95% CI)
Clinical trial.mp. OR clinical trial.pt. OR random:.mp. OR tu.xs.	99.3 (98.7 to 99.8)	70.4 (69.8 to 70.9)	9.9 (9.3 to 10.5)	71.3 (70.8 to 71.8)
Clinical trial.pt. OR random:.tw. OR tu.xs.	99.1 (98.6 to 99.7)	71.0 (70.4 to 71.5)	10.0 (9.4 to 10.6)	71.8 (71.3 to 72.4)
Clinical trial.pt. OR random:.mp. OR tu.fs.	98.9 (98.3 to 99.6)	79.7 (79.3 to 80.2)	13.8 (12.9 to 14.6)	80.3 (79.9 to 80.8)

mp=multiple posting (term appears in title, abstract, or MeSH heading); pt=publication type; tu=therapeutic use subheading; xs=exploded subheading; :=truncation; tw=textword (word or phrase appears in title or abstract); fs=floating subheading.