Many articles eligible for this series of meta-analyses were already in place as part of the Columbia Registry. The Columbia Registry is a systematic collection of medical management trials at the University of Missouri, School of Medicine.9 Extensive searches were done to collect all additional relevant controlled clinical trial reports: bibliographic database retrievals (eg, MEDLINE, CINAHL, HEALTH), manual searches (monographs, unindexed publications, reference lists), and informal contacts. By mapping the eligibility criteria, the search strategy for the collection of trials on prompting included a combination of medical subject heading (MeSH) terms and textwords (TWs) for each eligibility criterion. The words are MeSH terms unless noted as TW. The criteria were (1) random (truncated TW), group (truncated TW), random allocation (MeSH and TW), randomized controlled trial (publication type), or clinical trial (publication type); (2) checklist (TW), encounter forms (TW), tags (TW), triggers (TW), reminder systems, alert, (TW), reminder (TW), leaflets (TW), stickers (TW), messages (TW), or tailored messages (TW); and (3) preventive health services, immunization, vaccination, smoking, smoking cessation, mass screening, mammography, prenatal care, hypertension, blood pressure, diabetes mellitus, alcoholism, substance-related disorders, vaginal smears, hypercholesterolemia, glaucoma, or occult blood.