Computer support for recording and interpreting family histories of breast and ovarian cancer in primary care (RAGs): qualitative evaluation with simulated patients.
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OBJECTIVES: To explore general practitioners' attitudes towards and use of a computer program for assessing genetic risk of cancer in primary care. DESIGN: Qualitative analysis of semistructured interviews and video recordings of simulated consultations. PARTICIPANTS: Purposive sample of 15 general practitioners covering a range of computer literacy, interest in genetics, age, and sex. INTERVENTIONS: Each doctor used the program in two consultations in which an actor played a woman concerned about her family history of cancer. Consultations were videotaped and followed by interviews with the video as a prompt to questioning. MAIN OUTCOME MESURESs: Use of computer program in the Consultation. RESULTS: The program was viewed as an appropriate application of information technology because of the complexity of cancer genetics and a sense of "guideline chaos" in primary care. Doctors found the program easy to use, but it often affected their control of the consultation. They needed to balance their desire to share the computer screen with the patient, driven by their concerns about the effect of the computer on doctor-patient communication, against the risk of premature disclosure of bad news. CONCLUSIONS: This computer program could provide the necessary support to assist assessment of genetic risk of cancer in primary care. The potential impact of computer software on the consultation should not be underestimated. This study highlights the need for careful evaluation when developing medical information systems. (+info)
General practice registrar responses to the use of different risk communication tools in simulated consultations: a focus group study.
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OBJECTIVES: To pilot the use of a range of complementary risk communication tools in simulated general practice consultations; to gauge the responses of general practitioners in training to these new consultation aids. DESIGN: Qualitative study based on focus group discussions. SETTING: General practice vocational training schemes in South Wales. PARTICIPANTS: 39 general practice registrars and eight course organisers attended four sessions; three simulated patients attended each time. METHOD: Registrars consulting with simulated patients used verbal or "qualitative" descriptions of risks, then numerical data, and finally graphical presentations of the same data. Responses of doctors and patients were explored by semistructured discussions that had been audiotaped for transcription and analysis. RESULTS: The process of using risk communication tools in simulated consultations was acceptable to general practitioner registrars. Providing doctors with information about risks and benefits of treatment options was generally well received. Both doctors and patients found it helped communication. There were concerns about the lack of available, unbiased, and applicable evidence and a shortage of time in the consultation to discuss treatment options adequately. Graphical presentation of information was often favoured-an approach that also has the potential to save consultation time. CONCLUSIONS: A range of risk communication "tools" with which to discuss treatment options is likely to be more applicable than a single new strategy. These tools should include both absolute and relative risk information formats, presented in an unbiased way. Using risk communication tools in simulated consultations provides a model for training in risk communication for professional groups. (+info)
Scoring performance on computer-based patient simulations: beyond value of information.
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As computer based clinical case simulations become increasingly popular for training and evaluating clinicians, approaches are needed to evaluate a trainee's or examinee's solution of the simulated cases. In 1997 we developed a decision analytic approach to scoring performance on computerized patient case simulations, using expected value of information (VOI) to generate a score each time the user requested clinical information from the simulation. Although this measure has many desirable characteristics, we found that the VOI was zero for the majority of information requests. We enhanced our original algorithm to measure potential decrements in expected utility that could result from using results of information requests that have zero VOI. Like the original algorithm, the new approach uses decision models, represented as influence diagrams, to represent the diagnostic problem. The process of solving computer based patient simulations involves repeated cycles of requesting and receiving these data from the simulations. Each time the user requests clinical data from the simulation, the influence diagram is evaluated to determine the expected VOI of the requested clinical datum. The VOI is non-zero only it the requested datum has the potential to change the leading diagnosis. The VOI is zero when the data item requested does not map to any node in the influence diagram or when the item maps to a node but does not change the leading diagnosis regardless of it's value. Our new algorithm generates a score for each of these situations by modeling what would happen to the expected utility of the model if the user changes the leading diagnosis based on the results. The resulting algorithm produces a non-zero score for all information requests. The score is the VOI when the VOI is non-zero It is a negative number when the VOI is zero. (+info)
Integrating case based and rule based reasoning in a decision support system: evaluation with simulated patients.
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We present a Web-based knowledge management and decision support system for Type I Diabetes patients' care. The tool exploits the integration of two methodologies, Case Based Reasoning and Rule Based Reasoning, and supports physicians in the definition of therapeutic strategies. Such a work is being integrated in the EU funded T-IDDM project architecture. In this paper we report a first evaluation obtained on simulated patients. (+info)
Antibiotic dispensing by drug retailers in Kathmandu, Nepal.
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OBJECTIVES To assess over-the-counter antimicrobial dispensing by drug retailers in Kathmandu, Nepal, for rationality, safety, and compliance with existing government regulations. METHODS: Standardized cases of dysuria in a young adult male and acute watery diarrhoea in a child were presented by a mock patient to retailers at 100 randomly selected pharmacies. Questions asked by retailers and advice and medications given at their initiative were recorded. RESULTS: All retailers engaged in diagnostic and therapeutic behaviour beyond their scope of training or legal mandate. Historical information obtained by retailers was inadequate to determine the nature or severity of disease or appropriateness of antimicrobial therapy. 97% (95% CI = 91.5-99.4%) of retailers dispensed unnecessary antimicrobials in diarrhoea, while only 44% (95% CI = 34.1-54.3%) recommended oral rehydration therapy and only 3% (95% CI = 0.6-8.5%) suggested evaluation by a physician. 38% (95% CI = 28.5-48.2%) gave antimicrobials in dysuria, yet only 4% (95% CI = 1.1-9.9%) adequately covered cystitis. None covered upper urinary tract or sexually transmitted infections, conditions which could not be ruled out based on the interviews, and only 7% (95% CI = 2.9-13. 9%) referred for a medical history and physical examination necessary to guide therapy. CONCLUSIONS: Although legislation in Nepal mandates a medical prescription for purchase of antibiotics, unauthorized dispensing is clearly problematic. Drug retailers in our study did not demonstrate adequate understanding of the disease processes in question to justify their use of these drugs. Risks of such indiscretion include harm to individual patients as well as spread of antimicrobial resistance. More intensive efforts to educate drug retailers on their role in dispensing, along with increased enforcement of existing regulations, must be pursued. (+info)
The simulated surgery--an alternative to videotape submission for the consulting skills component of the MRCGP examination: the first year's experience.
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BACKGROUND: The simulated surgery was developed to examine the consulting skills of general practice (GP) registrars by observing their consultations with standardized patients. It was introduced in 1997 as an alternative to videotape submission in the consulting skills component of the Membership of the Royal College of General Practitioners (MRCGP) examination for those candidates who are unable to prepare a videotape. AIM: To describe the methodology of the examination and to report on the first year's experience. METHOD: The development of the cases and the techniques of marking and standard setting in the simulated surgery are described. RESULTS: Thirty-eight GP registrars took part in pilot examinations and 37 candidates were examined for the MRCGP. The distribution of their marks and the resulting pass/fail decisions are reported. The reliability of the 20-case simulated surgery, using Cronbach's alpha coefficient, is greater than 0.85. CONCLUSION: The simulated surgery is a feasible, valid, and reliable examination of consulting skills. Cost and manpower requirements remain a problem, but these are being addressed by current plans. (+info)
Computer support for interpreting family histories of breast and ovarian cancer in primary care: comparative study with simulated cases.
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OBJECTIVES: To evaluate the potential effect of computer support on general practitioners' management of familial breast and ovarian cancer, and to compare the effectiveness of two different types of computer program. DESIGN: Crossover experiment with balanced block design. PARTICIPANTS: Of a random sample of 100 general practitioners from Buckinghamshire who were invited, 41 agreed to participate. From these, 36 were selected for a fully balanced study. INTERVENTIONS: Doctors managed 18 simulated cases: 6 with computerised decision support system Risk Assessment in Genetics (RAGs), 6 with Cyrillic (an established pedigree drawing program designed for clinical geneticists), and 6 with pen and paper. MAIN OUTCOME MEASURES: Number of appropriate management decisions made (maximum 6), mean time taken to reach a decision, number of pedigrees accurately drawn (maximum 6). Secondary measures were method of support preferred for particular aspects of managing family histories of cancer; importance of specific information on cancer genetics that might be provided by an "ideal computer program." RESULTS: RAGs resulted in significantly more appropriate management decisions (median 6) than either Cyrillic (median 3) or pen and paper (median 3); median difference between RAGs and Cyrillic 2.5 (95% confidence interval 2.0 to 3.0; P<0.0001). RAGs also resulted in significantly more accurate pedigrees (median 5) than both Cyrillic (median 3.5) and pen and paper (median 2); median difference between RAGs and Cyrillic 1.5 (1.0 to 2.0; P<0.0001). The time taken to use RAGs (median 178 seconds) was 51 seconds longer per case (95% confidence interval 36 to 65; P<0.0001) than pen and paper (median 124 seconds) but was less than Cyrillic (median 203 seconds; difference 23. (5 to 43; P=0.02)). 33 doctors (92% (78% to 98%)) preferred using RAGs overall. The most important elements of an "ideal computer program" for genetic advice in primary care were referral advice, the capacity to create pedigrees, and provision of evidence and explanations to support advice. CONCLUSIONS: RAGs could enable general practitioners to be more effective gatekeepers to genetics services, empowering them to reassure the majority of patients with a family history of breast and ovarian cancer who are not at increased genetic risk. (+info)
A participant observation study using actors at 30 publicly funded HIV counseling and testing sites in Pennsylvania.
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OBJECTIVES: This study was designed to augment an evaluation of Pennsylvania publicly funded HIV counseling and testing sites, particularly of the staff-client interaction. METHODS: Actors were trained as research assistants and sent to 30 randomly chosen sites to be tested and counseled for HIV disease. Instruments based on Centers for Disease Control and Prevention (CDC) guidelines were designed and used to evaluate them. RESULTS: Data were generated that identified the range of compliance with CDC guidelines and state policy. Among the findings were that 10 of 30 sites required signed consents despite a state policy allowing anonymous testing. Only 17% of providers developed a written risk reduction plan, even though 69% of all sites surveyed by mail asserted that such plans were developed. Only 2 of 5 HIV-positive actors were offered partner notification services, even though 100% of sites visited by an interviewer claimed to offer such services. CONCLUSIONS: The findings suggest that although evaluation methods such as mail surveys and site visits are useful for evaluating the existence of appropriate policies and protocols and gathering baseline data, they might not be sufficient for assessing actual staff-client interaction. (+info)