Presentation on theme: "Knowledge Representation In Nursing and Its Impact on Database Design Josette Jones, RNc, Licentiate Nursing, Licentiate MIS Patricia F. Brennan, RN, Ph.D.,"— Presentation transcript:
Knowledge Representation In Nursing and Its Impact on Database Design Josette Jones, RNc, Licentiate Nursing, Licentiate MIS Patricia F. Brennan, RN, Ph.D., FAAN, FACMI University of Wisconsin Madison
Purpose of the Study Report on Indexing web pages using a subset of MeSH to create a set of patient specific information
Background and Significance Changes in health care Consumerism Cost management Need for indexing health information
Methods of Indexing Keyword indexing Keywords are terms occurring in the documents itself (title, abstract, body, URL) Concept indexing Concept terms describe the subject matter of the document. Concept terms may or may not occur in the document Concept terms are taken from Knowledge Representation Models
Knowledge Representation Model A Knowledge Representation Model has : An underlying knowledge representation language (meta-language) with its vocabulary and explicit structure A semantic (meaning of the expressions of the language) A restricted syntax (set of reasoning rules) Examples of Health Care / Nursing Knowledge Representation Models
Indexing Web Pages in HeartCare Nurse-clinicians tagged web documents with: Selected concepts from Medical Language Subject Heading (MeSH), a class of Knowledge Representation Models for bio-medicine Supplemented with terms reflecting local clinical practice
Implications for Retrieval Issues: (1) too many pages pulled per patient (2) too many duplicate pages (3) some pages were pulled that did not exactly match the patient profile.
Examples of Total Web Pages in Combination with Menu title Retrieved for a Patient PatientCombinations Retrieved Unique Combinations patient 1266138 patient 2891647 patient 3324281 patient 4584203
Example of duplicate page retrieval for a Patient: Web Page http://rex.nci.nih.gov/NCI_Pub_Interface/Clearing_the_Air/clearing.html, keywords smoking and behavior changes http://rex.nci.nih.gov/NCI_Pub_Interface/Clearing_the_Air/clearing.html Menu Title Taking charge of your health - Week 3-6 Beginning lifestyle changes - Week 7-12 Changing your lifestyle - Week 13-26 Condition Diabetes Hypertension Smoking Hypertension Smoking Diabetes Hypertension Smoking
Pages Retrieved that Does not Match the Patient’s Profile Sample Male Patient with Risk Factors Hypertension and Stress 11 different pages relating to the risk of smoking and smoking cessation 8 web pages relating to risk factors for women 5 pages specific about being overweight and weight loss 2 pages on the topic of diabetes management
Example of Indexing http://www.women.americanheart.org/physicians/sub_content/ten.html http://www.women.americanheart.org/physicians/sub_content/ten.html tagged with the terms “diet “and “weight” is pulled 4 different times for the menu heading “ Ten questions a woman should ask her healthcare provider ” http://www.amhrt.org/Heart_and_Stroke_A_Z_Guide/calccb.html withterms “Beta Blockers/Calcium Channel Blockers” and “Medications” are pulled for all conditions that have the subject heading assigned, even when not applicable
Discussion Flawed indexing system Conceptualization problem Lacking structure of index terms
This study is supported by NLM/NINR Grant LM06249, Principal Investigator Dr. P.F. Brennan The authors want to thank the members from the HeartCare team for their advice and support.
Josette Jones email@example.com Patricia F. Brennan firstname.lastname@example.org University of Wisconsin Madison