Table 8.

Top three term and four term search strategies using logistic regression techniques

Search strategy in Ovid format	Sensitivity (%) (95% CI)	Specificity (%) (95% CI)	Precision (%) (95% CI)	Accuracy (%) (95% CI)
randomized controlled trial.mp. OR randomized controlled trial.pt. OR double-blind:.tw. OR random: assigned.mp.	95.2 (93.8 to 96.5)	96.9 (96.7 to 97.1)	50.3 (48.0 to 52.7)	96.9 (96.7 to 97.1)
randomized controlled trial.mp. OR randomized controlled trial.pt. OR double-blind:.tw. OR random: assigned.mp. OR randomized trial.mp.	95.5 (94.2 to 96.8)	96.8 (96.6 to 97.0)	49.4 (47.1 to 51.8)	96.8 (96.6 to 97.0)
randomized controlled trial.mp. OR randomized controlled trial.pt. OR double-blind:.tw. OR random: assigned.mp. OR randomized trial.mp. NOT all terms with coefficients < −2.0.	92.8 (91.1 to 94.5)	97.1 (97.0 to 97.3)	51.5 (49.1 to 53.9)	97.0 (96.8 to 97.2)

mp=multiple posting (term appears in title, abstract, or MeSH heading); pt=publication type; :=truncation; tw=textword (word or phrase appears in title or abstract).