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Biomedical subjects

Robert H Friedman

Publications and source records attributed to Robert H Friedman.

17 recordsLinked to original sources
PubMed2006

How to write health dialog for a talking computer.

Automated dialogue systems delivered over the telephone offer a promising approach to delivering health-related interventions to populations of individuals at low-cost. Over the past two decades, an automated telephone system called Telephone-Linked Care or TLC has been successfully designed and evaluated by the authors and their colleagues. This work has resulted in over twenty systems for various health-related conditions and lifestyle behaviors. This paper describes our approach to developing and writing dialogue for these automated telephone systems, including determining the program objectives, defining the target population, and selecting a theory of behavior change to guide the intervention. Both macro and micro issues are considered in constructing dialogue systems that are engaging for the target population, easy to use, and effective at promoting positive health behaviors and outcomes.

Communication↗
PubMed2006

Evaluating nicotine replacement therapy and stage-based therapies in a population-based effectiveness trial.

Pharmacological interventions for smoking cessation are typically evaluated using volunteer samples (efficacy trials) but should also be evaluated in population-based trials (effectiveness trials). Nicotine replacement therapy (NRT) alone and in combination with behavioral interventions was evaluated on a population of smokers from a New England Veterans Affairs Medical Center. Telephone interviews were completed with 3,239 smokers, and 2,054 agreed to participate (64%). Participants were randomly assigned to one of four conditions: stage-matched manuals (MAN); NRT plus manuals (NRT + MAN); expert system plus NRT and manuals (EXP + NRT + MAN); and automated counseling plus NRT, manuals, and expert system (TEL + EXP + NRT + MAN). Assessments were completed at baseline, 10, 20, and 30 months. The point prevalence cessation rates at final follow-up (30 months) were MAN, 20.3%; NRT + MAN, 19.3%; EXP + NRT + MAN, 17.6%; and TEL + EXP + NRT + MAN, 19.9%. Stage-matched manuals provided cessation rates comparable with previous studies. The addition of NRT, expert system interventions, and automated telephone counseling failed to produce a further increase in intervention effectiveness.

Adult↗
PubMed2006

Automated telephone screening for problem drinking.

OBJECTIVE: This study assessed test-retest reliability and criterion validity for an automated version of the Alcohol Use Disorders Identification Test (AUDIT), a screening tool for alcohol-related problems. Participants' willingness to use such a system to learn about and change their drinking behavior was also assessed. METHOD: Participants were 202 callers recruited through newspaper ads and flyers asking for volunteers concerned about their drinking and willing to help test a new method of screening and referral for alcohol problems. Participants were divided into two groups. The first group of subjects recruited received the Telephone-Linked Communications (TLC)-AUDIT twice, administered a week apart. The second group received the TLC-AUDIT once and a human-administered AUDIT once, also a week apart. RESULTS: Test-retest reliability was assessed in 102 participants; the intraclass correlation of AUDIT scores between both administrations was .87; kappa for nonproblem versus problem drinking (AUDIT score of 8 or above) was .89. The validity study compared the TLC-AUDIT scores of the next 100 participants to AUDIT questions administered by a human interviewer. The intraclass correlation was .94; kappa was .75. Seventy-five percent of all participants who screened positive for problem drinking agreed they would "talk to a computer again to learn more about your drinking pattern and how to deal with it". CONCLUSIONS: Automated telephone technology can be used to administer the AUDIT instrument with high levels of reliability and validity. This technology could be used to deliver behavioral change interventions.

Adult↗
PubMed2005

Developing a quality measure for clinical inertia in diabetes care.

OBJECTIVE: To develop a valid quality measure that captures clinical inertia, the failure to initiate or intensify therapy in response to medical need, in diabetes care and to link this process measure with outcomes of glycemic control. DATA SOURCES: Existing databases from 13 Department of Veterans Affairs hospitals between 1997 and 1999. STUDY DESIGN: Laboratory results, medications, and diagnoses were collected on 23,291 patients with diabetes. We modeled the decision to increase antiglycemic medications at individual visits. We then aggregated all visits for individual patients and calculated a treatment intensity score by comparing the observed number of increases to that expected based on our model. The association between treatment intensity and two measures of glycemic control, change in HbA1c during the observation period, and whether the outcome glycosylated hemoglobin (HbA1c) was greater than 8 percent, was then examined. PRINCIPAL FINDINGS: Increases in antiglycemic medications occurred at only 9.8 percent of visits despite 39 percent of patients having an initial HbA1c level greater than 8 percent. A clinically credible model predicting increase in therapy was developed with the principal predictor being a recent HbA1c greater than 8 percent. There were considerable differences in the intensity of therapy received by patients. Those patients receiving more intensive therapy had greater improvements in control (p < .001). CONCLUSIONS: Clinical inertia can be measured in diabetes care and this process measure is linked to patient outcomes of glycemic control. This measure may be useful in efforts to improve clinicians management of patients with diabetes.

Aged↗
PubMed2005

"Shotgun" versus sequential testing. Cost-effectiveness of diagnostic strategies for vaginitis.

BACKGROUND: Although vaginitis is a common outpatient problem, only 60% of patients can be diagnosed at the initial office visit of a primary care provider using the office procedures of pH testing, whiff tests, normal saline, and potassium hydroxide preps. OBJECTIVE: To determine the most cost-effective diagnostic and treatment approach for the medical management of vaginitis. DESIGN: Decision and cost-effectiveness analyses. PARTICIPANTS: Healthy women with symptoms of vaginitis undiagnosed after an initial pelvic exam, wet mount preparations, pH, and the four criteria to diagnose bacterial vaginosis. SETTING: General office practice. METHODS: We evaluated 28 diagnostic strategies comprised of combinations of pH testing, vaginal cultures for yeast and Trichomonas vaginalis, Gram's stain for bacterial vaginosis, and DNA probes for Neisseria gonorrhoeae and Chlamydia. Data sources for the study were confined to English language literature. MEASUREMENT: The outcome measures were symptom-days and costs. RESULTS: The least expensive strategy was to perform yeast culture, gonorrhoeae and Chlamydia probes at the initial visit, and Gram's stain and Trichomonas culture only when the vaginal pH exceeded 4.9 (330 dollars, 7.30 symptom days). Other strategies cost 8 dollars to 76 dollars more and increased duration of symptoms by up to 1.3 days. In probabilistic sensitivity analysis, this strategy was always the most effective strategy and was also least expensive 58% of the time. CONCLUSIONS: For patients with vaginitis symptoms undiagnosed by pelvic examination, wet mount preparations and related office tests, a comprehensive, pH-guided testing strategy at the initial office visit is less expensive and more effective than ordering tests sequentially.

Adult↗
PubMed2005

Comparing participants and nonparticipants recruited for an effectiveness study of nicotine replacement therapy.

BACKGROUND: Interventions for smoking cessation have been typically evaluated on reactively recruited samples in clinical trials (efficacy trials). However, to have an impact on smoking rates in a general population, the intervention should also be evaluated with proactively recruited representative samples (effectiveness trials). PURPOSE: The characteristics of participants and two groups of nonparticipants recruited for a population-based nicotine replacement therapy study were compared. METHODS: All members of a large New England Veterans' Administration Medical Center were contacted, and interviews were completed with 3,239 identified smokers (at least 10 cigarettes per day). At the end of the interview, all smokers were offered participation in a multiple intervention study. Of the interviewed smokers, 2,915 verbally agreed to participate in the study (90%). Of those who gave initial verbal consent, 2,054 returned the written informed consent form and became participants (70%). RESULTS: The participants (full consent group) differed significantly from both nonparticipant groups-that is, the smokers who were interviewed but declined participation by active refusal (survey only group) and those who gave verbal consent but passively refused participation by failing to return the written consent form (verbal consent only group). Participants were more likely to be married, younger, and female; to live with others; and to have previously used or considered using nicotine replacement therapy. The survey only group was also more likely to be in the precontemplation stage (54%), whereas the participants were more likely to be in the contemplation (46%) or preparation stage (35%). The verbal consent only group was intermediate of the other two groups in stage-of-change characteristics. CONCLUSIONS: An important finding was that it is possible to recruit a large proportion of a sample of identified smokers to an nicotine replacement therapy study. However, the participants are likely to differ in significant ways from those who either actively or passively decline participation.

Female↗
PubMed2004

Compensation and advancement of women in academic medicine: is there equity?

BACKGROUND: Women have been entering academic medicine in numbers at least equal to their male colleagues for several decades. Most studies have found that women do not advance in academic rank as fast as men and that their salaries are not as great. These studies, however, have typically not had the data to examine equity, that is, do women receive similar rewards for similar achievement? OBJECTIVE: To examine equity in promotion and salary for female versus male medical school faculty nationally. DESIGN: Mailed survey questionnaire. SETTING: 24 randomly selected medical schools in the contiguous United States. PARTICIPANTS: 1814 full-time U.S. medical school faculty in 1995-1996, stratified by sex, specialty, and graduation cohort. MEASUREMENTS: Promotion and compensation of academic medical faculty. RESULTS: Among the 1814 faculty respondents (response rate, 60%), female faculty were less likely to be full professors than were men with similar professional roles and achievement. For example, 66% of men but only 47% of women (P < 0.01) with 15 to 19 years of seniority were full professors. Large deficits in rank for senior faculty women were confirmed in logistic models that accounted for a wide range of other professional characteristics and achievements, including total career publications, years of seniority, hours worked per week, department type, minority status, medical versus nonmedical final degree, and school. Similar multivariable modeling also confirmed gender inequity in compensation. Although base salaries of nonphysician faculty are gender comparable, female physician faculty have a noticeable deficit (-11,691 dollars; P = 0.01). Furthermore, both physician and nonphysician women with greater seniority have larger salary deficits (-485 dollars per year of seniority; P = 0.01). LIMITATIONS: This is a cross-sectional study of a longitudinal phenomenon. No data are available for faculty who are no longer working full-time in academic medicine, and all data are self-reported. CONCLUSIONS: Female medical school faculty neither advance as rapidly nor are compensated as well as professionally similar male colleagues. Deficits for female physicians are greater than those for nonphysician female faculty, and for both physicians and nonphysicians, women's deficits are greater for faculty with more seniority.

Career Mobility↗
PubMed2004

Testing the usability of two automated home-based patient-management systems.

To explore to what extent observation and semistructured in-depth interviews provide effective tools for usability testing of two automated home-based systems aimed at monitoring patients' health status at home and improving self-care. Telephone-Linked Care for Diet Adherence in Dyslipidemia (TLC-DietAid) used computer telephony to interact with users and Home Asthma Telemonitoring System (HAT System) used a combination of Personal Digital Assistant (palmtops) and the Internet for similar purposes. Both systems were evaluated in two separate pilot studies. Our pilot studies uncovered "medium-specific" and "content-specific" issues that addressed either the process of the interaction or its content. The results demonstrated that patient-users tended to evaluate each system on the basis of how it fit into everyday life and corresponded to personal preferences. The methodology also allowed the system designers to understand users' concerns and the context of adoption in order to introduce necessary changes to the design to address such concerns.

Asthma↗
PubMed2004

The views of U.S. medical school deans toward academic primary care.

PURPOSE: To understand the views of U.S. medical school deans about their primary care faculties. METHOD: In 2000, the authors mailed a questionnaire containing 43 multipart items to deans of 130 U.S. allopathic medical schools. The questionnaire assessed the deans' attitudes about and evaluation of primary care at their school and their school's efforts to strengthen it. Deans were asked to compare family medicine, general internal medicine, and general pediatrics with nonprimary care clinical departments at their schools. RESULTS: Of the 83 (64%) deans who responded, 82% reported their school had departments or divisions of family medicine, general internal medicine, and general pediatrics. Deans rated general internal medicine and general pediatrics higher than nonprimary care faculty on clinical expertise and productivity (p < .001) and family medicine equivalent to nonprimary care faculty. Deans rated all three primary care faculties superior to nonprimary care faculty for teaching skills (p < .001) and programs (p < .05), but lower than nonprimary care disciplines for research productivity (p < .01) and revenues (p < .001). They rated family medicine and general pediatrics lower for research skills (p < .001), but 73% of deans stated research was equally important for primary care and nonprimary care departments. Deans considered overall financial resources to be equivalent for primary care and nonprimary care departments, but 77% of deans felt primary care departments or divisions needed financial support from the medical school to survive. Most deans attempted to strengthen primary care by changing the curriculum to promote primary care and by providing financial support. CONCLUSIONS: Deans ranked primary care faculty high on clinical and teaching measures. Although they considered research to be an important activity for primary care faculty, they evaluated it low relative to nonprimary care departments.

Administrative Personnel↗
PubMed2004

Faculty self-reported experience with racial and ethnic discrimination in academic medicine.

BACKGROUND: Despite the need to recruit and retain minority faculty in academic medicine, little is known about the experiences of minority faculty, in particular their self-reported experience of racial and ethnic discrimination at their institutions. OBJECTIVE: To determine the frequency of self-reported experience of racial/ethnic discrimination among faculty of U.S. medical schools, as well as associations with outcomes, such as career satisfaction, academic rank, and number of peer-reviewed publications. DESIGN: A 177-item self-administered mailed survey of U.S. medical school faculty. SETTING: Twenty-four randomly selected medical schools in the contiguous United States. PARTICIPANTS: A random sample of 1,979 full-time faculty, stratified by medical school, specialty, graduation cohort, and gender. MEASUREMENTS: Frequency of self-reported experiences of racial/ethnic bias and discrimination. RESULTS: The response rate was 60%. Of 1,833 faculty eligible, 82% were non-Hispanic white, 10% underrepresented minority (URM), and 8% non-underrepresented minority (NURM). URM and NURM faculty were substantially more likely than majority faculty to perceive racial/ethnic bias in their academic environment (odds ratio [OR], 5.4; P <.01 and OR, 2.6; P <.01, respectively). Nearly half (48%) of URM and 26% of NURM reported experiencing racial/ethnic discrimination by a superior or colleague. Faculty with such reported experiences had lower career satisfaction scores than other faculty (P <.01). However, they received comparable salaries, published comparable numbers of papers, and were similarly likely to have attained senior rank (full or associate professor). CONCLUSIONS: Many minority faculty report experiencing racial/ethnic bias in academic medicine and have lower career satisfaction than other faculty. Despite this, minority faculty who reported experiencing racial/ethnic discrimination achieved academic productivity similar to that of other faculty.

Adult↗
PubMed2003

Participant reactions to a computerized telephone system for nutrition and exercise counseling.

This paper reports on an evaluation of the reactions of participants in a computer-controlled telephone conversation system (telephone-linked care, TLC) designed to offer nutrition and exercise counseling. After 6 months in the study, subjects were asked a series of questions about their opinions of the TLC system, including overall satisfaction and the system's helpfulness. One hundred and ninety individuals completed the attitude survey. On a scale of 0-100, respondents rated the overall satisfaction and helpfulness of the system at 63.6 and 62.3. Subjects using the nutrition counseling version of TLC rated it significantly higher on satisfaction (73.0 versus 52.4) and helpfulness (70.3 versus 53.7) than did subjects using the exercise version. Satisfaction and helpfulness were correlated with perceived usability, amount of contact, realism, and credibility (P < 0.01). Multivariate analyses showed that treatment group and number of calls made accounted for the greatest amount of variance in ratings of satisfaction and helpfulness. The findings suggest that the amount of contact with this technology, reflected by the number of calls, and the treatment group, nutrition or exercise, were significant predictors of reported satisfaction and perceived helpfulness of the system.

Adult↗
PubMed2003

Personal relationships with an intelligent interactive telephone health behavior advisor system: a multimethod study using surveys and ethnographic interviews.

The burgeoning of consumer health informatics and virtual health care can help people improve their health. However, little is known about individuals' reactions to such systems. We conducted an evaluation of the telephone-linked care (TLC) system, a computer-based telecommunications system, that functions as an at home monitor, educator, and counselor for patients with chronic health conditions. Our multimethod assessment of individuals' reactions to using TLC included both quantitative and qualitative methods. Ethnographic in-depth open-ended interviews indicated more subtle and surprising reactions to TLC than the overall positive responses from surveys: individuals formed personal relationships with this technology. This relationship formation suggests that TLC designers may have been successful in their attempts to emulate a conversation with a human being. Our study adds to evidence that technology can serve as a projective device for peoples' values and psychological issues. Both designers and users project values and goals onto computer-based technologies and take on different identities through it. Different groups of users, therefore, may see the same technology differently. People also form relationships with technologies, as they did with TLC. These findings, as well as implications for system design and health outcomes, need to be explored in additional studies.

Adult↗
PubMed2003

TLC-Asthma: an integrated information system for patient-centered monitoring, case management, and point-of-care decision support.

A great deal of successful work has been done in the area of EMR development, implementation, and evaluation. Less work has been done in the area of automated systems for patients. Efforts to link data at multiple levels - the patient, the case manager, and the clinician have been rudimentary to-date. In this paper we present a model information system that integrates patient health information across multiple domains to support the monitoring and care of children with persistent asthma. The system has been developed for use in a multi-specialty group practice and includes three primary components: 1) a patient-centered telephone-linked communication system; 2) a web-based alert reporting and nurse case-management system; and 3) EMR-based provider communication to support clinical decision making at the point-of-care. The system offers a model for a new level of connectivity for health information that supports customized monitoring, IT-enabled nurse case-managers, and the delivery of longitudinal data to clinicians to support the care of children with persistent asthma. Systems like the one described are well-suited, perhaps essential, technologies for the care of children and adults with chronic conditions such as asthma.

Adolescent↗
PubMed2003

The use of computer telephony to provide interactive health information.

The use of information technology to provide health information to the public has grown at a rapid pace. Numerous sources of health care information within both the print and Internet media are now available. Yet, their availability raises concerns about the quality of the information provided and questions about which is the most effective method for transmitting health information to consumers. We present an interactive method of presenting high-quality health information that uses a new approach: an integration of the telephone and the computer also called computer telephony. Telephone-Linked Communication for Health Information (TLC-HI) is a computer-based telecommunications system that functions as an educator to people in search of answers to health-related issues. To create TLC-HI, we converted validated print-based consumer information into computer-controlled conversational dialogues. We discuss the potential that the TLC-HI approach holds for improving the way health information is communicated.

Computer Systems↗
PubMedDate not supplied

Telephone-linked care for cancer symptom monitoring: a pilot study.

PURPOSE: The purpose of this pilot project was to explore the feasibility of using a telephone-based computerized system to monitor postchemotherapy symptoms and to test the mechanism of generating alert communications to healthcare providers about symptoms that are poorly controlled. DESCRIPTION OF STUDY: Twenty-seven patients with cancer participated in the study by calling the telephone-linked care (TLC) system daily during a single cycle of chemotherapy and reporting on seven common chemotherapy-related symptoms. Using selected symptom data, symptoms that met a preset threshold for severity generated a fax notification of the patient's symptom pattern to the physician. Patients then were interviewed about their satisfaction with TLC and about suggestions for improvement. RESULTS: The study demonstrated that TLC is easy to learn and use and that it captures daily symptom information from patients in their homes. A majority of patients experienced symptoms that were severe enough to generate symptom-alert faxes. Patient satisfaction with TLC was high. The technique, TLC voice, and the duration of the calls were acceptable to patients. There were few technical problems. CLINICAL IMPLICATIONS: The TLC system has the potential to improve dramatically symptom monitoring and symptom care of patients with cancer at home. Further testing is needed, but the TLC chemotherapy monitoring application shows promise for improving supportive-care service delivery for cancer patients. In its initial test, the TLC chemotherapy monitoring application has been shown to be highly acceptable to patients, able to generate useful symptom data, and able to generate faxed alerts to healthcare providers, thus improving communication about poorly controlled symptoms.

Adolescent↗