Design and implementation of a multicriteria medical decision support system for diagnosis and treatment

Health care providers face the problem of trying to make decisions with inadequate information and also with an overload of (often contradictory) information. Physicians often choose treatment long before they know which disease is present. Indeed, uncertainty is intrinsic to the practice of medicine. Decision analysis can help physicians structure and work through a medical decision problem, and can provide reassurance that decisions are rational and consistent with the beliefs and preferences of other physicians and patients. ^ The primary purpose of this research project is to develop the theory, methods, techniques and tools necessary for designing and implementing a system to support solving medical decision problems. A case study involving “abdominal pain” serves as a prototype for implementing the system. The research, however, focuses on a generic class of problems and aims at covering theoretical as well as practical aspects of the system developed. ^ The main contributions of this research are: (1) bridging the gap between the statistical approach and the knowledge-based (expert) approach to medical decision making; (2) linking a collection of methods, techniques and tools together to allow for the design of a medical decision support system, based on a framework that involves the Analytic Network Process (ANP), the generalization of the Analytic Hierarchy Process (AHP) to dependence and feedback, for problems involving diagnosis and treatment; (3) enhancing the representation and manipulation of uncertainty in the ANP framework by incorporating group consensus weights; and (4) developing a computer program to assist in the implementation of the system. ^

Exploring professional orientations to community voice in professional practice settings: The IMAP process

The tension between technical experts and the populations they seek to serve is well established in the literature examining professional social problem solving. In this piece, I examine this tension as one between the distinct discursive worlds of technical expertise and community voice. I develop an analytic process, IMAP, for exploring this tension by looking at a wide variety of professional orientations around a relatively fixed concept of community voice. IMAP involves I&barbelow;dentifying social problem solvers, M&barbelow;apping social problem solvers' claims, A&barbelow;nalyzing professional orientations that arise from this mapping, and P&barbelow;redicting, diagnosing, and remediating conflicts. IMAP can be used by analysts external to social problem solving settings or by social problem solvers themselves. The use of IMAP by external experts poses questions of expert alignment with either of the discursive worlds. I examine two cases in public health practice settings: a mobile immunization service and the efforts of a foundation to improve health in an inner-city neighborhood. I develop four modal types that can be anticipated in social problem solving settings or, more specifically, in public health practice. Understanding of these “world views” can enhance mutual understanding between public health professionals and between public health professionals and the communities they seek to serve. IMAP might also address ongoing conflicts to clarify differences in unspoken normative commitments and the impact of these on social problem solving. I discuss implications of the research for public health practice and further research in the area. ^

Qualitative study: Understanding Mexican American women's experience in intimate partner violence

The purpose of this qualitative study was to gain an understanding of the experiences of Mexican American women living with intimate partner abuse relevant to the process of disclosure of abuse. Limited research exists on the experiences of women who are of Mexican descent living with intimate partner abuse and their disclosure of abuse. Factors that influence disclosure for other populations are well articulated in the literature however, these factors have not been adequately verified in persons of Mexican descent. Data are reported from in-depth interviews with 26 clients at a shelter and an outreach agency in a south Texas-Mexico border community. Semi-structured interview guide was used to elicit information over an 11 month period. A grounded theory ethnography approach was used to analyze data. Verification strategies and constant comparison techniques (e.g. investigator responsiveness, methodological coherence, sampling adequacy, an active analytic stance, and saturation) enhanced rigor of analysis. Nineteen Mexican immigrant women and seven Mexican American women participated in the study. Several themes were discerned related to women's experiences in abuse: painful living, questioning endurance, and confronting reality. In almost every participant's account there was a description of repeated victimization by her intimate partner or partners, and again, by others within and outside her network. The participants discussed several cultural factors (e.g. embarrassment, concerns for family, avoidance of causing pain to family, protection of partner, avoidance of being judged) that hindered their decisions whether or not to disclose. Participants noted that healthcare workers rarely asked probing questions regarding abuse. The timing and process of disclosure took many turns for women in this study. Some of the factors hindering women from disclosing were found to be influenced by cultural practices. The consequences of disclosure for many of the women led them to re-victimization. Implications for practice to avoid missed opportunities with women living in abuse are to: ask questions routinely to encourage disclosure of abuse and offer community resource information for women living in abuse or both.^

The interorganizational implementation of state health policy: A network approach

This is an implementation analysis of three consecutive state health policies whose goal was to improve access to maternal and child health services in Texas from 1983 to 1986. Of particular interest is the choice of the unit of analysis, the policy subsystem, and the network approach to analysis. The network approach analyzes and compares the structure and decision process of six policy subsystems in order to explain program performance. Both changes in state health policy as well as differences in implementation contexts explain evolution of the program administrative and service unit, the policy subsystem. And, in turn, the evolution of the policy subsystem explains changes in program performance. ^