Leonard W. D'Avolio

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This issue of JAMIA focuses on natural language processing (NLP) techniques for clinical-text information extraction. Several articles are offshoots of the yearly ‘Informatics for Integrating Biology and the Bedside’ (i2b2) (http://www.i2b2.org) NLP shared-task challenge, introduced by Uzuner et al (see page 552) and cosponsored by the Veteran’s(More)
BACKGROUND Although prostate cancer is commonly diagnosed, few risk factors for high-grade prostate cancer are known and few prevention strategies exist. Statins have been proposed as a possible treatment to prevent prostate cancer. METHODS Using electronic and administrative files from the Veterans Affairs New England Healthcare System, we identified(More)
Reducing custom software development effort is an important goal in information retrieval (IR). This study evaluated a generalizable approach involving with no custom software or rules development. The study used documents "consistent with cancer" to evaluate system performance in the domains of colorectal (CRC), prostate (PC), and lung (LC) cancer. Using(More)
BACKGROUND Spinal manipulation has been associated with cervical arterial dissection and stroke but a causal relationship has been questioned by population-based studies. Earlier studies identified cases using International Classification of Diseases Ninth Revision (ICD-9) codes specific to anatomic stroke location rather than stroke etiology. We(More)
OBJECTIVES The Massachusetts Veterans Epidemiology Research and Information Center in collaboration with the Stanford Center for Innovative Study Design set out to test the feasibility of a new method of evidence generation. The first pilot of a point-of-care clinical trial (POCCT), adding randomization and other study processes to an electronic medical(More)
Attending Psychiatrist, VA Medical Center, White River Junction, VT, USA, Fellowship Director, VA-New England Healthcare Engineering Partnership, White River Junction, VT, USA and Assistant Professor, Dartmouth Medical School, Hanover, NH, USA Informatics Researcher, VA Boston Healthcare System, Boston, MA, USA, Associate Center Director for Biomedical(More)
As is the case for environmental, ecological, astronomical, and other sciences, medical practice and research finds itself in a tsunami of data. This data deluge, due primarily to the introduction of digitalization in routine medical care and medical research, affords the opportunity for improved patient care and scientific discovery. Medical informatics is(More)
OBJECTIVE Despite at least 40 years of promising empirical performance, very few clinical natural language processing (NLP) or information extraction systems currently contribute to medical science or care. The authors address this gap by reducing the need for custom software and rules development with a graphical user interface-driven, highly generalizable(More)
5 journals showed an overall increase in the percentage of impact factor citations associated with citable items from 2002 to 2007, whereas 1 journal (NEJM) showed a slight decrease (from 88.8% to 87.4%), but increased the total number of citations (from 9921 to 14 172). The demonstration that a journal’s citation impact is determined primarily by citations(More)
Surgical procedures can be viewed as a process composed of a sequence of steps performed on, by, or with the patient's anatomy. This sequence is typically the pattern followed by surgeons when generating surgical report narratives for documenting surgical procedures. This paper describes a methodology for semi-automatically deriving a model of conducted(More)