title: Effect of Physician Participation in a Multi-element Health Information and Data Exchange Program on Chronic Illness Medication Adherence.
abstract: BACKGROUND
  The Primary Care Information Project (PCIP) includes a network of more than 10,000 physicians across New York City focusing on improving the quality of patient care through the use of health information technology and data exchange.
  
  
  METHODS
  We assessed adherence, defined as the percentage with a medication possession ratio (MPR) ≥80%, across 2 time periods for union members whose primary care providers participated in the PCIP compared with those whose providers did not participate. Using prescription claims data from 2008 and 2011, the MPR was calculated for disease-specific categories of drugs among patients with diabetes, hypertension, and both conditions.
  
  
  RESULTS
  Greater improvements in the number of adherent members were observed for the PCIP patients with diabetes who were taking diabetes-specific medications (odds ratio [OR], 2.03; 95% confidence interval [CI], 1.08-3.83 for PCIP, versus OR, 1.14; 95% CI, 0.81-1.60 for non-PCIP) and patients with diabetes who are taking lipid-controlling medications (OR, 1.64; 95% CI, 0.73-3.65 for PCIP versus OR, 0.85; 95% CI, 0.55-1.32 for non-PCIP). However, the magnitude and significance of these associations were diminished when practices providing reduced prescription co-pays were excluded from the analyses.
  
  
  CONCLUSIONS
  Access to primary care providers participating in a public health initiative was associated with some improvement in medication adherence. However, reducing prescription co-pays may be a stronger factor for higher medication adherence among union members.
authors.affiliation: From the New York City Department of Health & Mental Hygiene, Primary Care Information Project (PCIP), Long Island City, NY (SFDL, SCS, JS, JJW); the 32 BJ Health Fund, New York, NY (LP); and the Clinical Pharmacy Practice, St. John's University, Queens, NY (VA). sdeleon@health.nyc.gov.
authors.forename: Samantha F
authors.initials: SF
authors.lastname: De Leon
authors.affiliation: From the New York City Department of Health & Mental Hygiene, Primary Care Information Project (PCIP), Long Island City, NY (SFDL, SCS, JS, JJW); the 32 BJ Health Fund, New York, NY (LP); and the Clinical Pharmacy Practice, St. John's University, Queens, NY (VA).
authors.forename: Lucas
authors.initials: L
authors.lastname: Pauls
authors.affiliation: From the New York City Department of Health & Mental Hygiene, Primary Care Information Project (PCIP), Long Island City, NY (SFDL, SCS, JS, JJW); the 32 BJ Health Fund, New York, NY (LP); and the Clinical Pharmacy Practice, St. John's University, Queens, NY (VA).
authors.forename: Vibhuti
authors.initials: V
authors.lastname: Arya
authors.affiliation: From the New York City Department of Health & Mental Hygiene, Primary Care Information Project (PCIP), Long Island City, NY (SFDL, SCS, JS, JJW); the 32 BJ Health Fund, New York, NY (LP); and the Clinical Pharmacy Practice, St. John's University, Queens, NY (VA).
authors.forename: Sarah C
authors.initials: SC
authors.lastname: Shih
authors.affiliation: From the New York City Department of Health & Mental Hygiene, Primary Care Information Project (PCIP), Long Island City, NY (SFDL, SCS, JS, JJW); the 32 BJ Health Fund, New York, NY (LP); and the Clinical Pharmacy Practice, St. John's University, Queens, NY (VA).
authors.forename: Jesse
authors.initials: J
authors.lastname: Singer
authors.affiliation: From the New York City Department of Health & Mental Hygiene, Primary Care Information Project (PCIP), Long Island City, NY (SFDL, SCS, JS, JJW); the 32 BJ Health Fund, New York, NY (LP); and the Clinical Pharmacy Practice, St. John's University, Queens, NY (VA).
authors.forename: Jason J
authors.initials: JJ
authors.lastname: Wang
mesh_terms: D002908:Chronic Disease; D003920:Diabetes Mellitus / Q000188:drug therapy*; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D055118:Medication Adherence; D011320:Primary Health Care / Q000458:organization & administration*
keywords: Drug Utilization; Electronic Medical Records; Health Promotion; Primary Health Care; Public Health