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1 Department of Communication, Texas A&M University, College Station
2 The Houston Center for Quality of Care and Utilization Studies and Baylor College of Medicine, Houston, Texas
3 Pearson Educational Measurement, Austin, Texas
4 The Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, Maryland
CORRESPONDING AUTHOR: Richard L. Street, Jr, PhD, Department of Communication, Texas A&M University, College Station, TX 77843-4234, r-street{at}tamu.edu
Annals Journal Club selection—see inside back cover or http://www.annfammed.org/AJC/.
| ABSTRACT |
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METHODS The research design was a cross-sectional study with 214 patients and 29 primary care physicians from 10 private and public outpatient clinics. Measures included postvisit patient ratings of similarity to the physician; satisfaction, trust, and intent to adhere; and audiotape analysis of patient involvement and physicians patient-centered communication.
RESULTS Factor analysis revealed 2 dimensions of similarity, personal (in beliefs, values) and ethnic (in race, community). Black and white patients in racially concordant interactions reported more personal and ethnic similarity (mean score, 87.6 and 78.8, respectively, on a 100-point scale) to their physicians than did minority patients (mean score, 81.4 and 41.2, respectively) and white patients (mean score, 84.4 and 41.9, respectively) in racially discordant encounters. In multivariable models, perceived personal similarity was predicted by the patients age, education, and physicians patient-centered communication, but not by racial or sexual concordance. Perceived personal similarity and physicians patient-centered communication predicted patients trust, satisfaction, and intent to adhere.
CONCLUSIONS The physician-patient relationship is strengthened when patients see themselves as similar to their physicians in personal beliefs, values, and communication. Perceived personal similarity is associated with higher ratings of trust, satisfaction, and intention to adhere. Race concordance is the primary predictor of perceived ethnic similarity, but several factors affect perceived personal similarity, including physicians use of patient-centered communication.
Key Words: Physician-patient relationship racial concordance patient-centered care
| INTRODUCTION |
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Concordance has emerged as an important dimension of the patient-physician relationship that may be linked to health care disparities. As a concept, concordance is most often defined as a similarity, or shared identity, between physician and patient based on a demographic attribute, such as race, sex, or age. Some evidence supports this view, especially with respect to racial concordance. Patients trust, satisfaction, utilization of services, and involvement in decision making have been reported higher when the patient and physician share the same race or ethnicity.12–17 On the other hand, other studies have found no significant effects associated with racially concordant physician-patient relationships,18–22 and the benefits of other types of concordance (eg, sex or age) are even more equivocal.23–26
Whereas concordance studies have produced some intriguing findings, they also raise important methodological questions. First, concordance implies a point of commonality that can enhance the ways patients and physicians relate to one another. One dimension of concordance (eg, race), however, does not occur in isolation (eg, sex). Several factors (eg, sexual orientation, parental status, communication style) may have an equal, if not greater, effect on the physician-patient relationship. Second, the relationship of demographic concordance to postconsultation outcomes is mediated though cognitive and affective processes; yet, few studies have identified or measured the role of these mediating variables.13,27
In this investigation, we hypothesized that the link between concordance and outcomes is mediated through perceptions of relational similarity. In other words, patients interacting with a physician whom they see as similar to themselves may perceive less social distance, assume that the physician has similar beliefs and values about health care, and be more inclined to trust that physician. Investigating the perceptual underpinnings of concordance effects is important because, although a persons demographic characteristics are for the most part fixed, perceptions of the physician-patient relationship are modifiable and could be the focus of interventions to improve communication.
This investigation had 3 objectives. The first was to create a self-report measure of perceived similarity that was based on dimensions of shared identity. The second was to evaluate the influence of concordance by race and sex on perceived similarity alone and in the context of other factors, including the relational history between physician and patient and the way in which physicians communicated with patients. Third was to examine the relationship of patients perceptions of similarity to physicians to quality of care outcomes, including patient participation in the consultation, trust in the physician, satisfaction with care, and intent to adhere to treatment recommendations.
| METHODS |
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Before the consultation, patients completed a questionnaire that elicited demographic information, as well as how many times they had previously seen this physician. Concordance by race and sex was determined by comparing patient and physician self-reports. After the visit, patients completed a survey that included the similarity and outcome measures.
Similarity Scale Development
An item-writing team consisting of a general internist (P.H.) and a psychometrician (K.J.OM.) created potential items for the similarity measure. The writing team based items on multiple dimensions upon which a person might perceive as having a personal, cultural, or ethnic connection to another, including communication, beliefs, and values, as well as racial, ethnic, religious, or social groups. A convenience sample of 8 patients pilot-tested the items during a 2-hour focus group. Focus group participants completed the items in relation to their doctor, identified items they deemed inappropriate, and identified problems in wording. After feedback from the focus group, 10 items were selected for the similarities scale (Table 1
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for the personal and ethnic similarity measures was 0.81 and 0.91, respectively. The measures of personal and ethnic similarity were only moderately correlated (r = .27), indicating that these factors represented distinct perceptions of similarity.
Outcome and Communication Measures
Outcome measures included patients self-reports of trust in the physician,29 satisfaction with care,30 and intent to follow treatment recommendations. Reliability was sufficient for the patient trust (
= .86), satisfaction (
= .91), and intent to adhere to recommendation (
= .63) measures.
An additional outcome measure was patient participation in the encounter. For this assessment, 2 coders independently listened to the audio-recordings of consultations and rated the patients participation using an adaptation of Lermans Perceived Involvement in Care scale (PICS).31,32 Because PICS was designed as a patient self-report measure, we modified its items to make them appropriate for observer coding. An earlier study validated this approach by showing that this measure was modestly but significantly correlated with frequency measures of patients communication (eg, number of questions asked, number of concerns expressed) and was predictive of physician and patient postconsultation perceptions.33
The coders also rated the physicians communication during the consultation. Using a measure from earlier studies,34–36 coders rated on 5-point scales the degree to which the physician (1) was informative, (2) used supportive communication, and (3) engaged in partnership-building. An earlier study33 reported that these scales were highly correlated with one another (r >.70). In other words, physicians who were rated more favorably on one dimension also tended to score highly on the others. Because these features of physician communication are important components of patient-centeredness,37 the items, which can be found online as a Supplemental Table at http://www.annfammed.org/cgi/content/full/6/3/198/DC1, were summed to create a single measure of patient-centered communication.
After completing a 2-hour training session, each coder independently rated each interaction. Intraclass correlations (ICC) between the 2 coders judgments indicated acceptable coder reliability in ratings of the degree to which patients actively participated in the consultation (ICC = .69) and physicians were patient-centered in their communication (ICC = .72). Thus, the 2 coders ratings were averaged to create 1 score per measure.
Data Analysis
Our analysis included several steps. First, we examined bivariate relationships between racial and sexual concordance and patients perceptions of personal and ethnic similarity with the doctor. To examine the relative importance of demographic concordance within the context of other factors that might affect patients perceptions of similarity, we used mixed-model multiple regression procedures. The dependent measures were perceived personal and ethnic similarity and the predictor variables included concordance by race and sex, demographic characteristics, ratings of the physicians patient-centered communication, and number of previous visits with the physician.
Finally, to examine the relationship of perceived personal and ethnic similarity to outcomes, we created multivariate regression models for each of the 4 outcome measures—patient participation, trust, satisfaction, and intent to adhere. Predictor variables included physicians and patients demographic characteristics, number of prior visits with the doctor, physicians patient-centered communication, and patients perceptions of personal and cultural similarity to their physician. Analyses at each step controlled for patients nested within physicians and treated the individual doctor as a random effect.
| RESULTS |
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Characteristics of patients and physicians are shown in Table 2
. The sample was diverse with respect to physician and patient race, age, and sex. Fifty-eight percent of the sample was concordant with respect to sex, and 32% was racially concordant. Some of the patients demographic attributes, however, were not evenly distributed with respect to concordance. Specifically, patients more likely to be in sex-concordant encounters were women (P <.001) and younger (P <.05). Although the percentage of black and white patients in racially concordant or discordant encounters did not differ, all Hispanic patients and all Asian doctors were in racially discordant consultations because of the absence of Hispanic physicians and Asian patients in the sample.
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As shown in Figure 1
, patients in racially concordant encounters reported more personal similarity (mean 87.6) to their doctors than did minority patients in racially discordant interactions (mean 81.4). White patients in racially discordant interactions did not differ in perceived personal similarity (mean 84.4) relative to the other 2 groups. Also, as shown in Figure 2
, patients in racially concordant encounters saw themselves as more ethnically similar to their physicians (mean 78.8) than did minority (mean 41.2) or white (mean 41.9) patients in racially discordant visits. Concordance by sex was not related to perceptions of personal (mean 83.4 and 85.1, respectively, for concordant and discordant dyads) or ethnic (mean 52.2 and 52.7, respectively, for concordant and discordant dyads) similarity. Important to note, however, was the wide variability in similarity scores for both concordant and discordant dyads. The range of perceived personal and ethnic similarity scores was about the same for racially concordant and discordant physician-patient pairs. In other words, within race- or sex-concordant dyads, some patients rated themselves as very different from their physicians, and within discordant dyads, some patients saw themselves as very similar to their physicians.
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| DISCUSSION |
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First, the perception of similarity to ones physician is a multidimensional construct with some components more strongly related to outcomes than others. Specifically, patients who believed they were more similar to their doctor with respect to personal beliefs, values, and ways of communicating reported more trust in the physician, more satisfaction with care, and a stronger intention to adhere to recommendations. On the other hand, patients perceptions of being similar to the physician in terms of race, ethnicity, and community were not related to patient outcomes. Racial concordance does appear to orient patients toward some common ground with the physician, particularly with respect to ethnic similarity. Other factors, however, may be more influential determinants of perceived personal similarity, including the patients age, education, and the degree to which physicians are patient-centered in their communication. Our results are consistent with those of Stewart et al9 who found that physicians use of patient-centered behavior was related to patients beliefs that they and the physician achieved a common understanding of their health conditions.
Our findings have important implications for both medical education and the design of interventions intended to improve health care delivery. Demographic characteristics are generally immutable. Whereas racial concordance has been associated with more positive physician-patient interactions,12,13,15,17 one mechanism for this effect is through perceptions of similarity, which can also be achieved through the physicians use of patient-centered communication. A physician who is skilled in informing, showing respect, and supporting patient involvement can transcend issues of race and sex to establish a connection with the patient that in turn contributes to greater patient satisfaction, trust, and commitment to treatment. Our findings add credibility to initiatives by the Accreditation Council for Graduate Medical Education (http://www.acgme.org/ Outcome) that call for communication skills training as a foundational part of undergraduate, graduate, and continuing medical education.
Our findings extend to cultural competence issues as well. As do the proponents of patient-centered care, advocates of cultural competence emphasize the importance of expressing concern for the patients well-being, showing respect, and incorporating the patients views in decision making as valuable tenets of interpersonal relationships in health care.45 Our measure of patient-centered communication tapped into some of these behaviors, which may explain why communication, more so than racial concordance, was related to patients perceptions of a personal connection with their physicians, as well as to patient outcomes. Although racial concordance was not related to outcomes in this study, physician ethnicity was in 2 respects. Patients reported more satisfaction with black doctors and less trust with Asian physicians. Even though we cannot draw conclusions from this limited sample of physicians (8 black, 9 white, and 12 Asian), the findings do justify more research on how physician ethnicity affects physician-patient interactions and whether these effects are a function of physician and patient attitudes toward one another or cultural differences in communication style.
Finally, the similarities measure offers a promising direction for concordance research because it allows the participants, rather than researchers, to determine their level of concordance. In this sense, the similarities measure represents a new evolution in the effort to capture some of the complexity of relational concordance. For example, patient ratings of similarity showed moderate to large amounts of variability within the constraints of concordance by race and sex. Some patients in race- and sex-concordant pairs saw themselves as very dissimilar from their physician, and conversely, some patients in discordant pairs saw themselves as very similar to their doctor.
Our study had limitations. First, because we employed a cross-sectional design, the similarities data were collected after the interaction and at the same time as the trust, satisfaction, and adherence measures. We therefore cannot draw conclusions regarding causation. Second, although our findings suggest that effective communication enables a patient and physician to find points of commonality that in turn build trust and satisfaction, a competing explanation might be that higher satisfaction or trust leads to a perception of greater similarity. Further longitudinal work and pre- and post-consultation assessment using the similarities measure are warranted. Third, while relatively balanced with respect to sexual concordance, the study sample was not balanced with respect to racial concordance in that all Hispanic patients and all Asian physicians were in discordant interactions. Fourth, we did not collect information on physicians medical training. For example, if a higher proportion of Asian physicians were international medical graduates, our finding of lower patient trust with Asian doctors may be confounded by country of medical training and culture. Finally, there may have been some differences related to practice settings (eg, Veterans Affairs vs hospital clinics) that we could not address because the 29 physicians who participated in the study came from various types of practices and clinical sites.
In conclusion, this study developed and tested a measure of perceived similarity that defines concordance from the patients, rather than the researchers, perspective. Results indicate that patients beliefs about similarity to the doctor are multidimensional, consisting of distinct perceptions of both personal and ethnic similarity. Of the 2 dimensions, personal similarity appears more strongly related to patient trust, satisfaction, and intent to adhere. Whereas racial concordance is important to the perception of ethnic similarity, the physicians communication has a significant impact on patients perceptions of having a personal connection to physicians with respect to thinking, values, and communicating. Future research should strive to better understand how similarities and differences in values, beliefs, and behaviors affect the quality of physician-patient relationships. Such work will inform the development of interventions that foster a sense of connection between patients and physicians which in turn may improve quality of care for all patients and reduce ethnic disparities in health care.
| FOOTNOTES |
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Funding support: This research was supported by P01HS10876 from the EXCEED (Excellence Centers to Eliminate Ethnic and Racial Disparities) initiative of the Agency for Healthcare Research and Quality and the National Center for Minority Health and Health Disparities. Dr Haidet was supported in part by a career development award from the US Department of Veterans Affairs. Dr Cooper is supported by a grant from the National Heart, Lung, and Blood Institute (K24HL083113).
Received for publication July 30, 2007. Revision received November 13, 2007. Accepted for publication November 26, 2007.
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