Accuracy of recall of exercise counseling among primary care patients
Introduction
Healthy People 2010 supports increasing the percentage of patients that receive appropriate counseling to modify health behaviors, including smoking, physical activity, and diet. Physicians, however, have typically fallen short of preventive counseling goals [1], [2], [3], [4]. The Healthy People 2010 physical activity goal is to increase the proportion of adults who engage regularly, preferably daily, in moderate physical activity for at least 30 min per day [1]. One way to achieve that goal is to increase the frequency of physician counseling for exercise [1], [5], [6].
Measuring counseling outcomes in primary care-based studies, however, is rarely performed. Two major reasons for this are that (1) counseling measures are not well-validated and (2) studies linking counseling “processes” to more well-validated and clinically meaningful outcomes, such as physical activity behavior, are rare. While some investigators have found that patients can accurately recall counseling activities, if asked soon after the clinical encounter, many studies have documented that patients' recall of events is poor [7], [8], [9], [10], [11], [12], [13].
We set out to develop and test, using audiotape as the measurement criterion, the performance of an instrument designed to measure the major components of exercise or physical activity counseling in a primary care setting. This measure was developed as an outcome measure for an intervention study to increase the quality of appropriate physical activity counseling in primary care settings. This study is novel as it is the first to our knowledge to assess the accuracy of patient and physician recall of physical activity counseling, against a gold standard such as audiotapes. Without a valid instrument, interventions seeking to increase physical activity counseling, in keeping with widely accepted public health goals, will lack a scientific basis for measuring outcomes.
Section snippets
Participants
A convenient sample of internal medicine residents (6) of the Rhode Island Hospital, a major teaching facility of Brown Medical School, and community primary care providers (2) were recruited to participate. Physicians agreed to discuss physical activity for 3–5 min with each patient recruited and were compensated $20 per patient. The physical activity counseling topics covered during the 3–5 min were entirely at the discretion of the physicians. Physicians were instructed to record the entire
Statistical analysis
All data analysis was carried out using SPSS for Windows, version 10.0 (November, 1999). Pearson's (r) correlation coefficients were used to compare the report by patients, physicians and the audiotape coders as to the overall number of counseling topics discussed. Chi-square and analysis of variance testing was used to examine associations between (1) the report by patients, physicians, and the audiotape coders as to whether or not the counseling topic was discussed and (2) patient variables
Overall
Of the 43 patients, the mean age was 47.1 years, 67% (24) were female, 16.3% (7) graduated from college, and 18.6% (8) were nonwhite. Twenty-nine (67%) had a body mass index (BMI) >25.0, 17 (40%) reported a history of high cholesterol, and 15 (35%) reported a history of high blood pressure. On average, the audiotape detected that 7.7 counseling topics were discussed, compared to 9.0 for the patient exit interview and 7.8 for the physician exit interview. On average, the number of discrepancies
Discussion
The present study was designed to examine the concurrent validity of patient report, physician report, and audiotape coding of physician counseling activities for physical activity promotion. The findings suggest that both the patient and physician reports of physical activity counseling have a moderate degree of correlation with an audiotape assessment as the gold standard. With regard to individual items, the present analysis shows that the PAEI was a valid measure for all but four of the
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