Scholars@Duke
Constance Margaret Johnson

Constance Margaret Johnson

Associate Professor Emerita in the School of Nursing
School of Nursing
constance.johnson@duke.edu
307 Trent Drive, School of Nur, DUMC 3322, Durham, NC 27710

Featured Works

Reasons for after-hours calls by hospital floor nurses to on-call physicians.

Journal article Joint Commission journal on quality and patient safety / Joint Commission Resources · June 2007 Featured Work BACKGROUND: Communication failure is a common root cause of preventable medical errors affecting hospitalized patients. A study was conducted to determine the reasons for calls made by nurses working on the general medical wards to on-call physicians from ... Cite

The significance of cognitive modeling in building healthcare interfaces.

Journal article International journal of medical informatics · February 2006 Featured Work BackgroundAlthough there are many reasons that widespread adoption of healthcare information systems has not transpired, one reason is a failure to take into account the cognitive needs of the users.AimTo understand the cognitive needs of ... Full text Cite

A user-centered framework for redesigning health care interfaces.

Journal article Journal of biomedical informatics · February 2005 Featured Work Numerous health care systems are designed without consideration of user-centered design guidelines. Consequently, systems are created ad hoc, users are dissatisfied and often systems are abandoned. This is not only a waste of human resources, but economic ... Full text Cite

An informatics tool to assess colon cancer risk.

Journal article AMIA ... Annual Symposium proceedings. AMIA Symposium · January 2005 Featured Work We outline the methodology used to develop an Internet-based cancer risk assessment tool and describe factors needed to create and post credible risk assessment tools or risk calculators. ... Cite

Assessing informatics students' satisfaction with a web-based courseware system.

Journal article International journal of medical informatics · March 2004 Featured Work This study assessed health informatics student satisfaction with two subsequent versions of Prometheus, a web-based courseware system. Prometheus versions 4 and 5 were assessed to gauge the effect of modifications to improve the usability of the system. Th ... Full text Cite

Multicolor in vitro translation.

Journal article Nature biotechnology · September 2003 Featured Work In vitro translation is a widely used tool for both analytical and preparative purposes. For analytical purposes, small amounts of proteins are synthesized and visualized by detection of labeled amino acids incorporated during translation. The original str ... Full text Cite

Detection of proximal colorectal cancers through analysis of faecal DNA.

Journal article Lancet (London, England) · February 2002 Featured Work Detection of mutations in faecal DNA represents a promising, non-invasive approach for detecting colorectal cancers in average-risk populations. One of the first practical applications of this technology involves the examination of microsatellite markers i ... Full text Cite

Detection of APC mutations in fecal DNA from patients with colorectal tumors.

Journal article The New England journal of medicine · January 2002 Featured Work BackgroundNoninvasive methods for detecting colorectal tumors have the potential to reduce morbidity and mortality from this disease. The mutations in the adenomatous polyposis coli (APC) gene that initiate colorectal tumors theoretically provide ... Full text Cite

Detecting colorectal cancer in stool with the use of multiple genetic targets.

Journal article Journal of the National Cancer Institute · June 2001 Featured Work BackgroundColorectal cancer cells are shed into the stool, providing a potential means for the early detection of the disease using noninvasive approaches. Our goal was to develop reliable, specific molecular genetic tests for the detection of col ... Full text Cite

Increasing productivity and reducing errors through usability analysis: a case study and recommendations.

Journal article Proceedings. AMIA Symposium · January 2000 Featured Work The usability problems of a system often occur due to inattention to well-documented and well-established design guidelines and heuristics. These problems often lead to increased errors, user dissatisfaction, and often user abandonment. Although there are ... Cite

Antibiotic treatment of gastric lymphoma of mucosa-associated lymphoid tissue. An uncontrolled trial.

Journal article Annals of internal medicine · July 1999 Featured Work BackgroundGastric lymphoma of mucosa-associated lymphoid tissue (MALT) is related to Helicobacter pylori infection and may depend on this infection for growth.ObjectiveTo determine the response of gastric MALT lymphoma to antibiotic treat ... Full text Cite

Molecular approaches for colorectal cancer screening.

Journal article European journal of gastroenterology & hepatology · March 1998 Featured Work Molecular genetic approaches for colorectal cancer screening using stool samples have the potential to be very specific, sensitive and cost effective. K-ras oncogene mutation, observed in about 50% of the colorectal tumours, serves as an ideal target for s ... Full text Cite

Screening for colorectal cancer. A comparison of 3 fecal occult blood tests.

Journal article Archives of internal medicine · May 1997 Featured Work BackgroundColorectal cancer is the second leading cause of cancer deaths in the United States. Fecal occult blood testing has become a standard screening test for large-bowel cancers in the average asymptomatic population. Performance characterist ... Full text Cite

Tocolysis for recurrent preterm labor using a continuous subcutaneous infusion pump.

Journal article The Journal of reproductive medicine · August 1994 Featured Work This study attempted to determine the best method of treatment for patients with recurrent preterm labor: administration of terbutaline via an automated, programmable, subcutaneous infusion pump or oral terbutaline. In this retrospective, controlled study, ... Cite

Characteristics of uterine activity in gestations less than 20 weeks.

Journal article Obstetrics and gynecology · July 1990 Featured Work Ambulatory tocodynamometry has been used for some time to record uterine activity during pregnancy. Most studies, however, have been performed in the third trimester (more than 24 weeks). The current study was initiated to assess uterine activity at earlie ... Full text Cite

Management of preterm labor patients at home: does daily uterine activity monitoring and nursing support make a difference?

Journal article Obstetrics and gynecology · July 1990 Featured Work Daily home uterine activity monitoring and perinatal nursing support were compared with standard care in managing patients with recurrent preterm labor during the current pregnancy in an effort to reduce preterm birth. Sixty-seven successfully treated pret ... Cite