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1 Centre for Studies in Family Medicine, The University of Western Ontario, London, Ontario, Canada
2 School of Nursing, The University of Western Ontario, London, Ontario, Canada
3 Department of Epidemiology and Biostatistics, The University of Western Ontario, London, Ontario, Canada
4 London Regional Cancer Centre, London, Ontario, Canada
5 Department of Social Work, St. Josephs Healthcare Hamilton, Hamilton, Ontario, Canada
6 Department of Surgery, The University of Western Ontario, London, Ontario, Canada
7 Division of General Surgery, Victoria Campus, London Health Sciences Centre, London, Ontario, Canada
8 Department of Medicine, McMaster University and Director, Supportive Cancer Care Research Unit, Juravinski Cancer Centre (formerly Hamilton Regional Cancer Centre), Hamilton, Ontario, Canada
9 Department of Family Medicine, The University of Western Ontario, London, Ontario, Canada
CORRESPONDING AUTHOR: Moira Stewart, PhD, Centre for Studies in Family Medicine, 245-100 Collip Circle, UWO Research Park, London, ON, N6G 4X8, Canada, moira{at}uwo.ca
| ABSTRACT |
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METHODS A randomized controlled trial was conducted in practices in London, Hamilton, and Toronto, Canada, with 17 family physicians, 16 surgeons, and 18 oncologists, and with 102 patients of the surgeons and oncologists. Doctors were randomized to 1 of 2 continuing education approaches: a traditional 2-hour version (control group), or a new 6-hour intensive version including exploring the patients perspectives and reviewing videotapes and receiving feedback (intervention group). Communication behavior of the physicians was measured objectively both before and after the intervention. As well, 4 postintervention patient outcomes were measured, by design only for surgeons and oncologists: patient-centerdness of the visit, satisfaction, psychological distress, and feeling better.
RESULTS No significant differences were found on the communication score of the intervention vs the control physicians when controlling for preintervention communication scores. Intervention family physicians, however, had significantly higher communication subscores than control family physicians. Also, patients of the intervention surgeons and oncologists were significantly more satisfied (scores of 82.06 vs 77.78, P = .03) and felt better (88.2% vs 70.6%, P=.02) than patients of the control surgeons and oncologists when controlling for covariates and adjusting for clustering within doctor.
CONCLUSIONS The continuing medical education intervention was effective in terms of some but not all physician and patient outcomes.
Key Words: Breast cancer patient-doctor relationship communication
| INTRODUCTION |
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We therefore designed a new continuing medical education (CME) program of feasible length (6 hours), using multiple approaches and based on expressed needs of patients and a recognized conceptual framework.19 We tested the hypothesis that the new CME would change verbal communication of surgeons, oncologists, and family physicians, and that it would also influence breast cancer patients perceptions of both the patient-physician interaction and their own health. We conducted a randomized controlled trial of 2 CME approaches: (1) a traditional 2-hour CME showing a videotaped consultation, which was then discussed; and (2) a new state-of-the-art 6-hour CME including the above plus 2 new elements: a discussion of the patients perspectives, and a videotape review with individual feedback.
| METHODS |
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Interventions
State-of-the-Art CME
The state-of-the-art CME program was developed on the basis of the qualitative findings from our previous study,21 our conceptual framework for patient-centered communication,22 the communication and CME literature, and the expertise of an educator (W.W.). The program incorporated the principles of adult education23,24 and experiential learning25–28 and contained 5 key elements: (1) literature—a description of the benefits of improved patient-physician communication for both patients and doctors; (2) physicians perspectives—participating physicians ventilated about barriers to and shared solutions for effective communication; (3) patients perspectives—first, a videotape of the findings of the qualitative study of breast cancer patients issues regarding communication, and second, breast cancer survivors in person talking about their own concerns; (4) video demonstration—a scripted "not-so-good" and "better" interaction between a breast cancer patient/actress and physician; and (5) practice with standardized patients and videotape review with feedback. The CME program was developed during an 18-month period that included formal pretests with evaluation29,30 and was facilitated by a communication educator and clinician. The CME program is outlined in Table 1
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Objectives
We hypothesized that, compared with the control group, the group of physicians attending the 6-hour intervention CME session would receive higher scores on an objective communication measure controlling for preprogram communication scores. We also hypothesized that breast cancer patients of the oncologists and surgeons would have higher scores on perceptions of patient-centered communication, be more satisfied with the physicians information-giving and interpersonal skills, experience less psychological distress, and feel better after the visit with the doctor, after controlling for confounding variables and adjusting for clustering effects within doctors.
Outcomes
The objective Patient-Centred Communication Measure31 was adapted for visits regarding breast cancer. The original measure was used to code and score recorded verbal communication, was reliable (interrater agreements of 74% to 94% and intrarater correlation of 0.73) and valid (correlation with a global score, 0.85),31 and it had been used in 2 previous studies.32,33 The original measure was adapted by creating 2 subscores: 1 subscore on validation of the patients expressed experiences, and 1 subscore on explicit support expressed by the physician. Subscores were further regrouped into the 4 major themes identified in our qualitative study (building relationships, sharing information, creating an experience of control, and mastering the whole person experience).21 The total score and each subscore ranged from 0 to 100.
Also, 4 patient outcomes were collected through questionnaires: (1) patient perceptions of patient-centeredness were assessed by a valid 12-item questionnaire based on Henbest et al33,34; (2) the patients satisfaction with doctors information-giving and interpersonal skills was assessed by the valid and reliable 18-item Cancer Diagnostic Interview Scale (CDIS)35; (3) patients psychological distress was assessed by the 51-item Brief Symptom Inventory, which addresses 3 dimensions particularly relevant for breast cancer patients (anxiety, depression, and hostility) and correlates highly with the benchmark SCL-90 (Symptom Checklist)36; and (4) whether patients felt better after a visit to the doctor was assessed by a single validated item.37
Data Collection
Patient-Centered Communication Scores
Before the CME session, data were collected in the physicians offices by recording visits with 2 announced standardized patients and scored, resulting in 1 average pre-CME score per physician. After the CME session, data scores from the audiotapes of visits with 2 more announced standardized patients were averaged to create each physicians post-CME communication score.
Four different case scenarios for standardized patients were developed for use in the pre-CME and post-CME visits. Each physician saw all 4 cases, which were randomly ordered for each physician so that there was no before-after bias in the level of difficulty. Appointments were arranged through the physicians office staff during regular patient hours; a brief case history was provided, including mock biopsy, sonogram, and mammogram reports specific to each case scenario and designed to create an aura of authenticity.
Two well-trained raters coded and scored the recorded visits. The timing of the audiotape (pre-CME or post-CME) and the group allocation of the physician were concealed from the raters.
Patient Outcomes Eligible, consecutive real patients completed questionnaires after their visit with their surgeon or oncologist and mailed them back within 1 month of the intervention.
Sample Size
To detect a clinically significant difference of 10 points (with standard deviations at 10.1) on the objective communication score with 80% power and
= .05 (2-sided), 32 doctors were the minimum required.38 To estimate the number of patients needed for the 3 continuous patient outcomes, standardized effect sizes of 0.6 were deemed adequate. Fifty-one patients per group were required to permit analysis adjusting for clustering of patients within doctor.
Randomization Randomization was done by the project coordinator. Physicians were recruited in blocks by specialty category and city. After the whole block of physicians had been recruited, the physicians were allocated using a random number table. Although the doctors and the teachers of the CME could not be masked, the audiotape coder, the standardized patients, and the real patients were masked to the doctors allocation.
Statistical Methods
We used ANCOVA to test for differences between the 2 groups on the objective communication measure controlling for the corresponding baseline objective communication score; the unit of analysis was the doctor. Mixed model linear regression was used to test for differences between the patients of the 2 groups of doctors on the 3 continuous patient outcome variables. The clustering of patients within doctor was adjusted for using SAS "procedure mixed." As well, to increase precision, 2 covariates were selected for adjustment on the basis of their potential to affect the outcome and the clinical significance of their differences between the intervention and control group: patient education level (dichotomized at secondary school completion) and medical conditions (expressed as mean number). Mixed model logistic regression was used for the one dichotomous patient outcome (feeling better), adjusting for clustering and the identical 2 covariates, using generalized estimating equations.39
| RESULTS |
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| DISCUSSION |
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If the latter is the correct interpretation, it is worth describing more fully the part of the CME program that addressed the patients perspective. The doctors were prepared for the patients perspective by first being invited to express their own perspective, including perceived barriers and facilitators in communicating with breast cancer patients. Next, when the physicians were ready to turn to the patients perspective, they viewed a video of breast cancer survivors explaining the findings of our formal qualitative study. Finally, 2 breast cancer survivors came into the seminar room and told their stories briefly and answered questions. The reality of the patients palpable anxiety and fear was inescapable.
There is a second explanation for why the state-of-the-art CME improved family physicians communication scores but not surgeons and oncologists scores. Although the family physicians did not work in the same practice, the surgeons, surgical residents and oncologists did, thereby opening the door to possible contamination, mitigating against finding differences between the state-of-the art CME and the traditional CME group.
A third explanation for the contradictory finding that intervention group surgeons and oncologists did not change their behavior (on the objective communication measure) but their patients reported higher satisfaction and felt better is that the objective communication measure missed some crucial component of what was taught and learned. For example, this measure does not take into account nonverbal communication. A previous study by the authors suggested that patient perceptions, not the objective measure, correlated with patient health outcomes (including recovery from symptoms and SF-36 [Short Form] self-rated health), implying that patients discerned important dimensions of communication not captured by the objective measure33 As well, the objective measure was developed in family medicine and, although it was adapted for this study of breast cancer patients, it might not be sensitive enough to behaviors of surgeons and oncologists.
A strength of the current study is that the objective communication measure was obtained both before and after the intervention. Communication measurement raises other issues. First, whereas audiotape studies of real patients typically use 10 patients per doctor, most studies of standardized patients analyze 1 patient per doctor,40,41 claiming that standardized patients reduce variability (of patient problem and doctor behavior). We attempted to improve reliability by using 2 patients, as did Epstein et al.42 Any possible misclassification will lead to a more conservative estimate. Second, if a Hawthorne effect occurred because the standardized patients were announced, it would be equal in the intervention and control groups, and thus not threaten internal validity; but it may limit the studys generalizability to real-world patient visits. Evidence shows almost negligible Hawthorne effect, however, that is, negligible change in correlates of communication scores when doctors know they are being studied compared with when they do not: Korsch et als seminal study43 comparing doctors audiotaped with those not, and Epstein et al42 comparing detected and undetected standardized patients.
This study contributes to the growing body of data on the "dose-response" of communication education and indicates some impact of a shorter course than previously reported, ie, 6 hours in the current study vs 2.5 days7 and 3 days.16 Our program and these 2 longer programs included similar elements, such as physicians expressing their problems, and the video review with individual feedback. A unique element in our program was the patient perspective (videotaped findings of the qualitative study and breast cancer survivors in the seminar room).
The results of this study must be interpreted cautiously given that multiple tests were performed and some differences observed may have been due to chance. Even so, the robust magnitude of the differences somewhat weigh against this possibility. Other limitations include limited generalizability of the study (the sample of physicians was not randomly selected); fewer than one-half of the doctors approached agreed and completed the trial; and similarly, the patient sample was not representative in that only 44.3% of eligible patients completed the questionnaire. Finally generalizability of the CME itself was limited because it was co-conducted by an experienced communication educator and highly motivated clinicians.
Breast cancer patients were more satisfied and felt better after visits with surgeons and oncologists who had participated in a 6-hour CME on communication as compared with patients of control group physicians. Despite this finding, the surgeons and oncologists did not change their communication behavior as reflected by the objective measure, although the family doctors did. These data suggest that the new intensive 6-hour CME is effective but with possibly different impact among different types of doctors.
| ACKNOWLEDGMENTS |
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| FOOTNOTES |
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Funding support: This study was funded by the Canadian Breast Cancer Research Initiative of the National Cancer Institute of Canada. Dr. Stewart is funded by the Dr. Brian W. Gilbert Canada Research Chair. The setting of the study was the Thames Valley Family Practice Research Unit, a health systems-linked research unit funded by the Ministry of Health and Long-Term Care of Ontario.
Disclaimer: The views expressed in this paper are those of the authors, and do not necessarily reflect those of the Ministry of Health and Long-Term Care of Ontario.
Received for publication September 13, 2006. Revision received April 4, 2007. Accepted for publication April 9, 2007.
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