TY - JOUR AU - Hays, Ron D. AB - OBJECTIVE: To test the feasibility of and to validate a self‐report weekly postcard diary of health care utilization. DESIGN: Case‐series and validation study. SETTING: Community‐based sample of fee‐for‐service and health maintenance organization (HMO) patients. PARTICIPANTS: A convenience sample of 24 community‐dwelling older persons who had failed a self‐administered screen and were eligible for a study of outpatient comprehensive geriatric assessment consultation. MEASUREMENTS: Subjects completed and mailed in a weekly postcard diary documenting medical, counseling, or rehabilitation therapy visits. If a subject did not respond within 10 days after the end of the week, a telephone call was placed to gather the information. For a subset of 10 subjects who were HMO enrollees, all records were reviewed to determine accuracy of the postcard diaries. RESULTS: Of the 24 subjects enrolled, one HMO enrollee dropped out following hip surgery after 4 weeks of completing diaries. The remaining 23 subjects (96% of total entered) provided complete information for 12 weeks. Telephone follow‐up to either obtain or clarify utilization information was required for 22% of subjects. For the subset of 10 HMO subjects, seven underreporting, two overreporting, and one incorrect day errors were detected–a total of 10 errors representing 9% of diaries and 1.3% of patient‐days. Kappa as a measure of agreement between the two methods (self‐report and chart review) was 0.82 (P < .0001). Compared with chart review, the diary report was 75.0% sensitive and 99.8% specific. Positive and negative predictive values were 91.3% and 99.2%, respectively. CONCLUSION: These findings suggest that a postcard diary system with telephone follow‐up is both a feasible and reasonably accurate method of tracking health care utilization by community‐dwelling older persons, although a small percentage will be unable to adhere to this method. TI - Feasibility and Accuracy of a Postcard Diary System for Tracking Healthcare Utilization of Community‐Dwelling Older Persons JF - Journal of American Geriatrics Society DO - 10.1111/j.1532-5415.1995.tb06105.x DA - 1995-05-01 UR - https://www.deepdyve.com/lp/wiley/feasibility-and-accuracy-of-a-postcard-diary-system-for-tracking-YWQOgNGLn5 SP - 550 VL - 43 IS - 5 DP - DeepDyve ER -