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Self-report versus Medical Records for Assessing Cancer-Preventive Services Delivery

¹ Department of Family Medicine and ² The Cancer Institute of New Jersey, University of Medicine and Dentistry, New Jersey (UMDNJ)-Robert Wood Johnson Medical School, New Brunswick, New Jersey; ³ Department of Family Medicine, UMDNJ-New Jersey Medical School, Newark, New Jersey; and Departments of ⁴ Biostatistics and ⁵ Epidemiology, UMDNJ-School of Public Health, Piscataway, New Jersey

Requests for reprints: Jeanne M. Ferrante, Department of Family Medicine, University of Medicine and Dentistry, New Jersey-Robert Wood Johnson Medical School, 1 World's Fair Drive, Suite 1515, Somerset, NJ 08873. Phone: 732-743-3386; Fax: 732-743-3395. E-mail: ferranjm{at}umdnj.edu

Accurate measurement of cancer-preventive behaviors is important for quality improvement, research studies, and public health surveillance. Findings differ, however, depending on whether patient self-report or medical records are used as the data source. We evaluated concordance between patient self-report and medical records on risk factors, cancer screening, and behavioral counseling among primary care patients. Data from patient surveys and medical records were compared from 742 patients in 25 New Jersey primary care practices participating at baseline in SCOPE (supporting colorectal cancer outcomes through participatory enhancements), an intervention trial to improve colorectal cancer screening in primary care offices. Sensitivity, specificity, and rates of agreement describe concordance between self-report and medical records for risk factors (personal or family history of cancer, smoking), cancer screening (breast, cervical, colorectal, prostate), and counseling (cancer screening recommendations, diet or weight loss, exercise, smoking cessation). Rates of agreement ranged from 41% (smoking cessation counseling) to 96% (personal history of cancer). Cancer screening agreement ranged from 61% (Pap and prostate-specific antigen) to 83% (colorectal endoscopy) with self-report rates greater than medical record rates. Counseling was also reported more frequently by self-report (83% by patient self-report versus 34% by medical record for smoking cessation counseling). Deciding which data source to use will depend on the outcome of interest, whether the data is used for clinical decision making, performance tracking, or population surveillance; the availability of resources; and whether a false positive or a false negative is of more concern. (Cancer Epidemiol Biomarkers Prev 2008;17(11):2987–94)