title: MEDLINE SDI services: how do they compare?
abstract: BACKGROUND
  Selective dissemination of information (SDI) services regularly alert users to new information on their chosen topics. This type of service can increase a user's ability to keep current and may have a positive impact on efficiency and productivity. Currently, there are many venues available where users can establish, store, and automatically run MEDLINE searches.
  
  
  OBJECTIVE
  To describe, evaluate, and compare SDI services for MEDLINE.
  
  
  METHODS
  The following SDI services were selected for this study: PubMed Cubby, BioMail, JADE, PubCrawler, OVID, and ScienceDirect.
  
  
  METHODS
  Identical searches were established in four of the six selected SDI services and were run on a weekly basis over a period of two months. Eight search strategies were used in each system to test performance under various search conditions. The PubMed Cubby system was used as the baseline against which the other systems were compared. Other aspects were evaluated in all six services and include ease of use, frequency of results, ability to use MeSH, ability to access and edit existing search strategies, and ability to download to a bibliographic management program.
  
  
  RESULTS
  Not all MEDLINE SDI services retrieve identical results, even when identical search strategies are used. This study also showed that the services vary in terms of features and functions offered.
authors.affiliation: Library of the Health Sciences, Urbana University of Illinois at Chicago, 102 Medical Sciences Building, 506 South Mathews, Urbana, IL 61801, USA. shultz@uic.edu
authors.forename: Mary
authors.initials: M
authors.lastname: Shultz
authors.forename: Sandra L
authors.initials: SL
authors.lastname: De Groote
mesh_terms: D004867:Equipment Design; D006801:Humans; D033181:Information Dissemination / Q000379:methods*; D007255:Information Services / Q000706:statistics & numerical data*; D016247:Information Storage and Retrieval / Q000706:statistics & numerical data*; D016239:MEDLINE; D017010:Reminder Systems / Q000706:statistics & numerical data*