J Am Med Inform Assoc - Temporal trends of hemoglobin A1c testing.

Tópicos

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Resumo

JECTIVE: The study of utilization patterns can quantify potential overuse of laboratory tests and find new ways to reduce healthcare costs. We demonstrate the use of distributional analytics for comparing electronic health record (EHR) laboratory test orders across time to diagnose and quantify overutilization.MATERIALS AND METHODS: We looked at hemoglobin A1c (HbA1c) testing across 119,000 patients and 15 years of hospital records. We examined the patterns of HbA1c ordering before and after the publication of the 2002 American Diabetes Association guidelines for HbA1c testing. We conducted analyses to answer three questions. What are the patterns of HbA1c ordering? Do HbA1c orders follow the guidelines with respect to frequency of measurement? If not, how and why do they depart from the guidelines?RESULTS: The raw number of HbA1c orderings has steadily increased over time, with a specific increase in low-measurement orderings (<6.5%). There is a change in ordering pattern following the 2002 guideline (p<0.001). However, by comparing ordering distributions, we found that the changes do not reflect the guidelines and rather exhibit a new practice of rapid-repeat testing. The rapid-retesting phenomenon does not follow the 2009 guidelines for diabetes diagnosis either, illustrated by a stratified HbA1c value analysis.DISCUSSION: Results suggest HbA1c test overutilization, and contributing factors include lack of care coordination, unexpected values prompting retesting, and point-of-care tests followed by confirmatory laboratory tests.CONCLUSIONS: We present a method of comparing ordering distributions in an EHR across time as a useful diagnostic approach for identifying and assessing the trend of inappropriate use over time.

Resumo Limpo

jectiv studi util pattern can quantifi potenti overus laboratori test find new way reduc healthcar cost demonstr use distribut analyt compar electron health record ehr laboratori test order across time diagnos quantifi overutilizationmateri method look hemoglobin ac hbac test across patient year hospit record examin pattern hbac order public american diabet associ guidelin hbac test conduct analys answer three question pattern hbac order hbac order follow guidelin respect frequenc measur depart guidelinesresult raw number hbac order steadili increas time specif increas lowmeasur order chang order pattern follow guidelin p howev compar order distribut found chang reflect guidelin rather exhibit new practic rapidrepeat test rapidretest phenomenon follow guidelin diabet diagnosi either illustr stratifi hbac valu analysisdiscuss result suggest hbac test overutil contribut factor includ lack care coordin unexpect valu prompt retest pointofcar test follow confirmatori laboratori testsconclus present method compar order distribut ehr across time use diagnost approach identifi assess trend inappropri use time

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