title: A cross-sectional study of provider and patient characteristics associated with outpatient disclosures of dietary supplement use.
abstract: OBJECTIVE
  Explore patterns in patients' disclosures of supplement use and identify provider and patient characteristics associated with disclosures.
  
  
  METHODS
  Cross-sectional study of 61 outpatient primary care, integrative medicine, and complementary medicine providers, and 603 of their patients. Primary outcomes were supplement disclosures (based on audio recorded office visits, post-visit patient surveys and medical record abstractions for the day of the visits).
  
  
  RESULTS
  Seventy-nine percent of 603 patients reported on a post-visit survey that they took a total of 2107 dietary supplements. Of those taking supplements, 232 patients (48.6%) discussed at least one supplement with their provider on the day of their office visit. However, patients disclosed only 714 (33.9%) of the 2107 supplements they were taking. Patients more frequently disclosed supplement use when they saw providers who attributed greater importance to asking about supplements. Patient characteristics such as patient activation, number of medical conditions, and use of prescription medications were not associated with disclosure of supplement use.
  
  
  CONCLUSIONS
  Provider rating of the importance of asking about supplements is a major factor prompting patients' disclosures of supplement use.
  
  
  CONCLUSIONS
  Provider-targeted interventions to encourage provider awareness about potential supplement-drug interactions are needed to increase disclosures about dietary supplement use.
authors: Department of Family Medicine, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, USA. Electronic address: dtarn@mednet.ucla.edu.
authors: Derjung M
authors: DM
authors: Tarn
authors: Division of Geriatrics, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, USA.
authors: Arun
authors: A
authors: Karlamangla
authors: Department of Dentistry, University of California-Los Angeles, Los Angeles, USA; RAND Corp., Santa Monica, USA.
authors: Ian D
authors: ID
authors: Coulter
authors: Center for Healthcare Policy and Research and Departments of Internal Medicine and Sociology, University of California-Davis Medical Center, Sacramento, USA.
authors: Debora A
authors: DA
authors: Paterniti
authors: L.A. Net Community Health Resource Network, Los Angeles, USA.
authors: Lyndee
authors: L
authors: Knox
authors: Kaiser Permanente Southern California, Los Angeles, USA.
authors: Peter S
authors: PS
authors: Khang
authors: UCLA Center for East-West Medicine, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, USA.
authors: Ka-Kit
authors: KK
authors: Hui
authors: Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, USA.
authors: Neil S
authors: NS
authors: Wenger
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002140:California; D003142:Communication; D000529:Complementary Therapies; D003430:Cross-Sectional Studies; D019587:Dietary Supplements / Q000706:statistics & numerical data*; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006282:Health Personnel / Q000523:psychology*; D006801:Humans; D055048:Integrative Medicine; D008297:Male; D008875:Middle Aged; D009819:Office Visits; D010045:Outpatients / Q000523:psychology / Q000706:statistics & numerical data*; D010817:Physician-Patient Relations; D011795:Surveys and Questionnaires; D014342:Truth Disclosure
keywords: Complementary and alternative medicine; Dietary supplements; Provider–patient communication; Provider–patient relations