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ABSTRACT: To analyse effects of patient and physician characteristics on questions and advice about smoking in primary care practice and to examine country differences.
We conducted a factorial experiment, employing filmed scenarios in which actors played the role of patients with symptoms of coronary heart disease (CHD) or type 2 diabetes. Versions were filmed with patient-actors of different gender, age, race, and socioeconomic status. The videotapes were presented to primary care physicians in the US, UK and Germany. Physicians were asked whether they would ask questions about smoking or give cessation advice.
Female and older CHD patients are less likely to be asked or get advice about smoking in all three countries. Effects of physician attributes are weak and inconsistent. Compared to physicians in the US and the UK, German doctors are least likely to ask questions or give advice.
Although all physicians viewed the same cases their questioning and advice giving differed according to patient attributes and country. Due to the experimental design external validity of the study may be limited.
Findings have implications for medical education and professional training of physicians as well as for the organization and financing of health care.
Patient Education and Counseling 05/2012; 89(1):51-6. · 2.31 Impact Factor
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ABSTRACT: To estimate the relative contribution of patient attributes, provider characteristics and organizational features of the doctors' workplace to the diagnosis and management of diabetes.
In a factorial experimental design doctors (n = 192) viewed clinically authentic vignettes of 'patients' presenting with identical signs and symptoms. Doctor subjects were primary care doctors stratified according to gender and level of experience. During an in-person interview scheduled between real patients, doctors were asked how they would diagnosis and manage the vignette 'patients' in clinical practice.
This study considered the relative contribution of patient, doctor and organizational factors. Taken together patient attributes explained only 4.4% of the variability in diabetes diagnosis. Doctor factors explained only 2.0%. The vast majority of the explained variance in diabetes diagnosis was due to organizational factors (14.3%). Relative contributions combined (patient, provider, organizational factors) explained only 20% of the total variance.
Attempts to reduce health care variations usually focus on the education/activation of patients, or increased training of doctors. Our findings suggest that shifting quality improvement efforts to the area which contributes most to the creation and amplification of variations (organizational influences) may produce better results in terms of reduced variations in health care associated with diabetes.
Journal of Evaluation in Clinical Practice 12/2011; 17(6):1122-8. · 1.23 Impact Factor
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ABSTRACT: Work-related stress among physicians has been an issue of growing concern in recent years. How and why this may vary between different health care systems remains poorly understood. Using an established theoretical model (effort-reward imbalance), this study analyses levels of work stress among primary care physicians (PCPs) in three different health care systems, the United States, the United Kingdom and Germany. Whether professional autonomy and specific features of the work environment are associated with work stress and account for possible country differences are examined. Data are derived from self-administered questionnaires obtained from 640 randomly sampled physicians recruited for an international comparative study of medical decision making conducted from 2005 to 2007. Results demonstrate country-specific differences in work stress with the highest level in Germany, intermediate level in the US and lowest level among UK physicians. A negative correlation between professional autonomy and work stress is observed in all three countries, but neither this association nor features of the work environment account for the observed country differences. Whether there will be adequate numbers of PCPs, or even a field of primary care in the future, is of increasing concern in several countries. To the extent that work-related stress contributes to this, identification of its organizational correlates in different health care systems may offer opportunities for remedial interventions.
Social Science [?] Medicine 07/2010; 71(2):298-304. · 2.70 Impact Factor
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ABSTRACT: This article examines the diagnosis and management of type-2 diabetes when exactly the same "patient" is encountered by 192 randomly selected primary care doctors in 3 different health care systems--the United States, United Kingdom, and Germany.
We conducted a factorial experiment, employing 2 clinically authentic filmed scenarios, to examine country differences in the treatment of diabetes, while controlling the effects of selected characteristics of patients and physicians. The patient in the first scenario presented with (undiagnosed) signs and symptoms strongly suggestive of diabetes, while the second scenario presented an already diagnosed patient with an emerging foot neuropathy. Physicians were asked how they would diagnose and manage the patients after watching the video vignettes using a questionnaire with standardized and open-ended questions.
Regarding the first (undiagnosed) case, US doctors would ask significantly more questions than physicians from the UK and Germany (P < 0.001). German physicians would give less advice but would want to see the patient again much sooner (P < 0.001). Regarding the diagnosed case with an emerging foot neuropathy, US physicians would be most active in terms of questioning, testing, prescribing, and advice giving. Again, physicians from Germany would be less active in terms of therapeutic strategies but they would like to see the patient again sooner (P = 0.005).
Although physicians in the 3 countries encountered exactly the same patient, differences in diagnostic and management decisions were evident. The experimental design provides unconfounded estimates of health system differences while simultaneously controlling for the effects of selected patient attributes and physician characteristics.
Medical care 04/2010; 48(4):321-6. · 3.24 Impact Factor
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ABSTRACT: Objectives: This article examines the diagnosis and management of type-2 diabetes when exactly the same “patient” is encountered by 192 randomly selected primary care doctors in 3 different health care systems—the United States, United Kingdom, and Germany.
Methods: We conducted a factorial experiment, employing 2 clinically authentic filmed scenarios, to examine country differences in the treatment of diabetes, while controlling the effects of selected characteristics of patients and physicians. The patient in the first scenario presented with (undiagnosed) signs and symptoms strongly suggestive of diabetes, while the second scenario presented an already diagnosed patient with an emerging foot neuropathy. Physicians were asked how they would diagnose and manage the patients after watching the video vignettes using a questionnaire with standardized and open-ended questions.
Results: Regarding the first (undiagnosed) case, US doctors would ask significantly more questions than physicians from the UK and Germany (P < 0.001). German physicians would give less advice but would want to see the patient again much sooner (P < 0.001). Regarding the diagnosed case with an emerging foot neuropathy, US physicians would be most active in terms of questioning, testing, prescribing, and advice giving. Again, physicians from Germany would be less active in terms of therapeutic strategies but they would like to see the patient again sooner (P = 0.005).
Conclusions: Although physicians in the 3 countries encountered exactly the same patient, differences in diagnostic and management decisions were evident. The experimental design provides unconfounded estimates of health system differences while simultaneously controlling for the effects of selected patient attributes and physician characteristics.
Medical Care 03/2010; 48(4):321-326. · 3.41 Impact Factor
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Health Services Research 10/2009; · 2.16 Impact Factor
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ABSTRACT: The financing and organization of primary care in the United States has changed dramatically in recent decades. Primary care physicians have shifted from solo practice to larger group practices. The culture of a medical practice is thought to have an important influence on physician behavior. This study examines the effects of practice culture and organizational structure (while controlling for patient and physician characteristics) on the quality of physician decision-making.
Data were obtained from a balanced factorial experiment which employed a clinically authentic video-taped scenario of diabetes with emerging peripheral neuropathy.
Our findings show that several key practice culture variables significantly influence clinical decision-making with respect to diabetes. Practice culture may contribute more to whether essential examinations are performed than patient or physician variables or the structural characteristics of clinical organizations.
Attention is beginning to focus on physician behavior in the context of different organizational environments. This study provides additional support for the suggestion that organization-level interventions (especially focused on practice culture) may offer an opportunity to reduce health care disparities and improve the quality of care.
Journal of Health Services Research & Policy 05/2009; 14(2):96-103. · 1.73 Impact Factor
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ABSTRACT: Studies from the United States and the United Kingdom show variations in medical decision making concerning the primary care of depression. Patient and physicians attributes independently influence doctors' decisions regardless of the patients' condition. In this paper results are presented on how these factors influence primary care doctors' diagnostic and management decisions regarding a depression in Germany. A factorial experiment with a videotaped patient consultation was conducted. Professional actors played the role of patients with symptoms of a depression. A videotape with typical symptoms of the disease under study was produced where actors differ according to age (55 vs. 75 years), gender, and social status (teacher vs. janitor) in order to mirror respective patient characteristics. The videotape was presented to a total of 128 randomly selected primary care physicians in Germany, taking gender and duration of professional experience (<5 vs. >15 years) into account. Physicians confronted with the videotape were asked to judge the clinical condition and to give recommendations for diagnosis and therapy. In particular, the physicians were asked what questions they would ask, to name the most likely diagnoses, what their certainty levels were, which test(s) they would order, which medication(s) they would prescribe, and what lifestyle recommendation(s) they would make if they saw the patient from the video in their everyday clinical practice. Contrary to international studies results show only minor variation in the primary care of depression. Thus, in most aspects care of depression in Germany seems to be independent from patients' and physicians' characteristics under study.
PPmP - Psychotherapie · Psychosomatik · Medizinische Psychologie 03/2009; 60(3-4):98-103. · 1.02 Impact Factor
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ABSTRACT: The way patients with coronary heart disease (CHD) are treated is partly determined by non-medical factors. There is a solid body of evidence that patient and physician characteristics influence doctors' management decisions. Relatively little is known about the role of structural issues in the decision making process. This study focuses on the question whether doctors' diagnostic and therapeutic decisions are influenced by the health care system in which they take place. This non-medical determinant of medical decision-making was investigated in an international research project in the US, the UK and Germany.
Videotaped patients within an experimental study design were used. Experienced actors played the role of patients with symptoms of CHD. Several alternative versions were taped featuring the same script with patients of different sex, age and social status. The videotapes were shown to 384 randomly selected primary care physicians in the three countries under study. The sample was stratified on gender and duration of professional experience. Physicians were asked how they would diagnose and manage the patient after watching the video vignette using a questionnaire with standardised and open-ended questions.
Results show only small differences in decision making between British and American physicians in essential aspects of care. About 90% of the UK and US doctors identified CHD as one of the possible diagnoses. Further similarities were found in test ordering and lifestyle advice. Some differences between the US and UK were found in the certainty of the diagnoses, prescribed medications and referral behaviour. There are numerous significant differences between Germany and the other two countries. German physicians would ask fewer questions, they would order fewer tests, prescribe fewer medications and give less lifestyle advice.
Although all physicians in the three countries under study were presented exactly the same patient, some disparities in the diagnostic and patient management decisions were evident. Since other possible influences on doctors treatment decisions are controlled within the experimental design, characteristics of the health care system seem to be a crucial factor within the decision making process.
BMC Health Services Research 02/2008; 8:198. · 1.66 Impact Factor
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ABSTRACT: Using novel methods, this paper explores sources of uncertainty and gender bias in primary care doctors' diagnostic decision-making about coronary heart disease (CHD). Claims about gendered consultation styles and quality of care are re-examined, along with the adequacy of CHD models for women. Randomly selected doctors in the UK and the US (n=112, 56 per country, stratified by gender) were shown standardised videotaped vignettes of actors portraying patients with CHD. Patients' age, gender, ethnicity and social class were varied systematically. During interviews, doctors gave free-recall accounts of their decision-making, which were analysed to determine patient and doctor gender effects. We found differences in male and female doctors' responses to different types of patient information. Female doctors recall more patient cues overall, particularly about history presentation, and particularly amongst women. Male doctors appear less affected by patient gender but both male and especially female doctors take more account of male patients' age, and consider more age-related disease possibilities for men than women. Findings highlight the need for better integration of knowledge about female presentations within accepted CHD risk models, and do not support the contention that women receive better-quality care from female doctors.
Sociology of Health & Illness 02/2008; 30(1):1-18. · 1.88 Impact Factor
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ABSTRACT: Relatively few studies have measured sexual functioning in women using a large, diverse, community-based sample with measures that allow for direct comparisons with previous findings. In this article, we: (1) describe prevalence of sexual activity in women by key sociodemographic characteristics, including age, race/ethnicity, marital status, and socioeconomic status; and (2) estimate the influence of key correlates on sexual problems. Data were analyzed from the Boston Area Community Health (BACH) Survey, a 2002-2005 community-based epidemiologic study of urologic and gynecologic symptoms, sociodemographics, health status, and psychosocial characteristics in a diverse sample of Boston area residents (N = 3,205 women aged 30-79 years). Analyses of sexual activity prevalence and reasons for inactivity were conducted on the full sample, while analyses of sexual problems and their correlates were conducted for the subset of women who engaged in sexual activity with a partner in the previous 4 weeks. A total of 49% of participants were not sexually active, citing lack of interest (51.5%) and lack of a partner (60.8%) as the most common reasons. Data pertaining to five dimensions of sexual functioning were gathered through a self-administered questionnaire adapted from the Female Sexual Function Index, measuring desire among all women and arousal, lubrication, orgasm, and pain among those who were sexually active. Among the sexually active, we obtained a 38.4% prevalence rate of sexual problems and 34.9% of those participants reported that they were also dissatisfied with their sex lives. Therefore, only 13.7% of the sexually active sample exhibited both sexual problems and dissatisfaction with their overall sex lives. Age was strongly and positively associated with sexual problems. In terms of psychosocial factors, depression, sexual and physical abuse in adulthood, global mental health functioning, and alcohol were associated with sexual problems, with variation across racial/ethnic groups.
Archives of Sexual Behavior 02/2008; 38(4):514-27. · 3.53 Impact Factor
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ABSTRACT: This study aims to prospectively examine the trends and reasons for the underutilization of free semiannual preventive dental care provided to children with unmet dental needs who participated in the 5-year New England Children's Amalgam Trial.
Children aged 6 to 10 at baseline (1997-99) with > or = 2 posterior carious teeth were recruited from rural Maine (n = 232) and urban Boston (n = 266). Interviewer-administered questionnaires assessed demographic and personal characteristics. Reasons for missed appointments were recorded during follow-up and are descriptively presented. We used an ordinal logistic regression to analyze the utilization of semiannual dental visits.
On average, urban children utilized 69 percent of the visits and rural children utilized 82 percent of the visits. For both sites, utilization steadily decreased until the end of the 5-year trial. Significant predictors of underutilization in the multivariate model for urban children were non-White race, household welfare use, deep debt, and distance to dental clinic. Among the relatively less-diverse rural children, caregiver education level and a greater number of decayed tooth surfaces at baseline (i.e., need for care) were significantly associated with underutilization. Among all children, the common reasons for missed visits included guardian scheduling and transportation difficulties; reasons among urban participants also indicated a low priority for dental care.
Among these children with unmet dental needs, the provision of free preventive dental care was insufficient to remove the disparities in utilization and did not consistently result in high utilization through follow-up. Differences between educational levels, ethnicities, and rural/urban location suggest that public health programs need to target the social settings in which financial burdens exist.
Journal of Public Health Dentistry 01/2008; 68(3):139-48. · 1.19 Impact Factor
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ABSTRACT: To determine the relative contributions of: (1) patient attributes; (2) provider characteristics; and (3) health care systems to health care disparities in the management of coronary heart disease (CHD) and depression.
Primary experimental data were collected in 2001-2 from 256 randomly sampled primary care providers in the U.S. (Massachusetts) and the U.K. (Surrey, Southeast London, and the West Midlands).
Two factorial experiments were conducted in which physicians were shown, in random order, two clinically authentic videotapes of "patients" presenting with symptoms strongly suggestive of CHD and depression. "Patient" characteristics (age, gender, race, and socioeconomic status [SES]) were systematically varied, permitting estimation of unconfounded main effects and the interaction of patient, provider, and system-level influences. DATA COLLECTION/DATA EXTRACTION METHODS: Analysis of variance was used to measure provider decision-making outcomes, including diagnosis, information seeking, test ordering, prescribing behavior, lifestyle recommendations, and referrals/follow-ups.
There is a high level of consistency in decision making for CHD and depression between the U.S. and the U.K. Most physicians in both countries correctly identified conditions depicted in the vignettes, although U.S. doctors engage in more information seeking, are more likely to prescribe medications, and are more certain of their diagnoses than their U.K. counterparts. The absence of any national differences in test ordering is consistent for both of the medical conditions depicted. U.K. physicians, however, were more likely than U.S. physicians to make lifestyle recommendations for CHD and to refer those patients to other providers.
Substantively, these findings point to the importance of patient and provider characteristics in understanding between-country differences in clinical decision making. Methodologically, our use of a factorial experiment highlights the potential of these methods for health services research-especially the estimation of the influence of patient attributes, provider characteristics, and between-country differences in the quality of medical care.
Health Services Research 01/2007; 41(6):2182-200. · 2.16 Impact Factor
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ABSTRACT: Numerous studies examine inequalities in health by gender, age, class and race, but few address the actions of primary care doctors. This factorial experiment examined how four patient characteristics impact on primary care doctors' decisions regarding coronary heart disease (CHD). Primary care doctors viewed a video-vignette of a scripted consultation where the patient presented with standardised symptoms of CHD. Videotapes were identical apart from varying patients' gender, age (55 versus 75), class and race, thereby removing any confounding factors from the social context of the consultation or other aspects of patients' symptomatology or behaviour. A probability sample of 256 primary care doctors in the UK and US viewed these video-vignettes in a randomised experimental design. Gender of patient significantly influenced doctors' diagnostic and management activities. However, there was no influence of social class or race, and no evidence of ageism in doctors' behaviour. Women were asked fewer questions, received fewer examinations and had fewer diagnostic tests ordered for CHD. 'Gendered ageism' was suggested, since midlife women were asked fewest questions and prescribed least medication appropriate for CHD. Primary care doctors' behaviour differed significantly by patients' gender, suggesting doctors' actions may contribute to gender inequalities in health.
Social Science [?] Medicine 02/2006; 62(1):103-15. · 2.70 Impact Factor
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ABSTRACT: Risk factors for coronary heart disease (CHD) vary with patient characteristics but we do not know how this influences doctors' questioning and advice giving.
To find out whether four patient characteristics - age (55 versus 75 years), sex, class, and race - influence primary care doctors' questioning style and advice giving in the United Kingdom (UK) and United States (US).
A factorial experiment using video simulation of a patient consulting with CHD symptoms, designed to systematically alter their age, sex, class, and race.
Surrey, south east London and the West Midlands in the UK, and Massachusetts in the US.
A stratified random sample of 128 general practitioners (GPs) in the UK and 128 primary care doctors in the US were shown video vignettes in their practices of patient consultations, and interviewed about patient management strategies.
Sex and age influence doctors' questioning of patients presenting with CHD. Men are asked more questions overall, particularly about smoking and drinking. Middle-aged patients are asked more about their lifestyle. Advice about smoking is given to more men than women, and to more mid-life than older patients. Women doctors question patients about their lifestyle more often, and give more advice to patients about their diet.
Doctors' questioning strategies are influenced by patients' sex and age, suggesting that doctors may miss smoking- and alcohol-related factors among women and older patients with CHD. Doctors give more advice about smoking to men, despite sex equality in smoking prevalence. Therefore, doctors' information seeking and advice giving do not match known patient risk factors.
British Journal of General Practice 10/2004; 54(506):673-8. · 1.83 Impact Factor
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ABSTRACT: Nonmedical determinants of medical decision making were investigated in an international research project in the United States, the United Kingdom, and Germany. The key question in this paper is whether and to what extent doctors' diagnostic and therapeutic decisions in coronary heart disease (CHD) are influenced by patient gender.
A factorial experiment with a videotaped patient consultation was conducted. Professional actors played the role of patients with symptoms of CHD. Several alternative versions were taped featuring the same script with patient-actors of different gender, age, race, and socioeconomic status. The videotapes were presented to a randomly selected sample of 128 primary care physicians in each country. Using an interview with standardized and open-ended questions, physicians were asked how they would diagnose and treat such a patient after they had seen the video.
Results show gender differences in the diagnostic strategies of the doctors. Women were asked different questions, CHD was mentioned more often as a possible diagnosis for men than for women, and physicians were less certain about their diagnosis with female patients. Gender differences in management decisions (therapy and lifestyle advice) are less pronounced and less consistent than in diagnostic decisions. Magnitude of gender effect on doctors' decisions varies between countries with smaller influences in the United States.
Although patients with identical symptoms were presented, primary care doctors' behavior differed by patients' gender in all 3 countries under study. These gender differences suggest that women may be less likely to receive an accurate diagnosis and appropriate treatment than men.
Women s Health Issues 18(3):191-8. · 1.61 Impact Factor
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ABSTRACT: Using novel methods, this paper explores sources of uncertainty and gender bias in primary care doctors’ diagnostic decision making about coronary heart disease (CHD). Claims about gendered consultation styles and quality of care are re-examined, along with the adequacy of CHD models for women. Randomly selected doctors in the UK and the US (n=112, 56 per country, stratified by gender) were shown standardised videotaped vignettes of actors portraying patients with CHD. ‘Patients’ age, gender, ethnicity and social class were varied systematically. During interviews, doctors gave free-recall accounts of their decision making, which were analysed to determine patient and doctor gender effects. We found differences in male and female doctors’ responses to different types of patient information. Female doctors recall more patient cues overall, particularly about history presentation, and particularly amongst women. Male doctors appear less affected by patient gender but both male and especially female doctors take more account of male patients’ age and consider more age-related disease possibilities for men than women. Findings highlight the need for better integration of knowledge about female presentations within accepted CHD risk models, and do not support the contention that women receive better quality care from female doctors.
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ABSTRACT: This paper examines UK and US primary care doctors' decision-making about older (aged 75 years) and midlife (aged 55 years) patients presenting with coronary heart disease (CHD). Using an analytic approach based on conceptualising clinical decision-making as a classification process, it explores the ways in which doctors' cognitive processes contribute to ageism in health-care at three key decision points during consultations. In each country, 56 randomly selected doctors were shown videotaped vignettes of actors portraying patients with CHD. The patients' ages (55 or 75 years), gender, ethnicity and social class were varied systematically. During the interviews, doctors gave free-recall accounts of their decision-making. The results do not establish that there was substantial ageism in the doctors' decisions, but rather suggest that diagnostic processes pay insufficient attention to the significance of older patients' age and its association with the likelihood of co-morbidity and atypical disease presentations. The doctors also demonstrated more limited use of ‘knowledge structures’ when diagnosing older than midlife patients. With respect to interventions, differences in the national health-care systems rather than patients' age accounted for the differences in doctors' decisions. US doctors were significantly more concerned about the potential for adverse outcomes if important diagnoses were untreated, while UK general practitioners cited greater difficulty in accessing diagnostic tests.
