title: The effectiveness of computer reminders versus postal reminders for improving quality assessment for point-of-care testing in primary care: a randomized controlled trial.
abstract: OBJECTIVE
  This study aimed to evaluate the relative effectiveness of electronic and postal reminders for increasing adherence to the quality assurance programme for the international normalized ratio (INR) point-of-care testing (POCT) device in primary care.
  
  
  METHODS
  All 213 family practices that use the Elective Laboratory of the Capital Region, Denmark, and regularly conduct INR POCT were randomly allocated into two similarly sized groups. During the 4-month intervention, these practices were sent either computer reminders (ComRem) or computer-generated postal reminders (Postal) if they did not perform a split test to check the quality of their INR POCT for each calendar month. The adherence of the practices was tracked during the subsequent 8 months subdivided into two 4-month periods both without intervention. Outcomes were measures of split test procedure adherence.
  
  
  RESULTS
  Both interventions were associated with an increase in adherence to the split test procedure - a factor 6.00 [95% confidence interval (CI) 4.46-7.72] and 8.22 [95% CI 5.87-11.52] for ComRem and Postal, respectively - but there is no evidence that one of the interventions was more effective than the other. In the ComRem group, the expected number of split tests (out of four) was 2.54 (95% CI 2.33-2.76) versus 2.44 (95% CI 2.24-2.65) in the Postal group, P = 0.14. There was a slight decrease in adherence over the two follow-ups, but neither intervention was better than the other in achieving a lasting improvement in adherence.
  
  
  CONCLUSIONS
  Computer reminders are as efficient as postal reminders in increasing adherence to a quality assurance programme for the INR POCT device in primary care.
authors: The Research Unit for General Practice and Section of General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark.
authors: Volkert
authors: V
authors: Siersma
authors: Marius Brostrøm
authors: MB
authors: Kousgaard
authors: Susanne
authors: S
authors: Reventlow
authors: Ruth
authors: R
authors: Ertmann
authors: Peter
authors: P
authors: Felding
authors: Frans Boch
authors: FB
authors: Waldorff
mesh_terms: D000368:Aged; D003201:Computers; D003718:Denmark; D005260:Female; D006801:Humans; D019934:International Normalized Ratio; D008297:Male; D008875:Middle Aged; D019095:Point-of-Care Systems / Q000706:statistics & numerical data*; D011177:Postal Service; D011320:Primary Health Care / Q000458:organization & administration*; D058996:Quality Improvement / Q000458:organization & administration*; D017010:Reminder Systems / Q000295:instrumentation*
keywords: implementation; point-of-care systems; primary care; quality assurance; randomized controlled trial; reminder systems