Product Search Search Effective Health Care website Submit search Search Tip: Use double quotes around phrases to rank exact matches higher in the result list. 5 results Change Score or Followup Score? An Empirical Evaluation of the Impact of Choice of Mean Difference Estimates White Paper April 20, 2015 Comparative Effectiveness of Treatment for Hepatitis C in Adults Research Protocol Archived November 30, 2011 Comparative Effectiveness of Hepatitis C Treatment Adherence Interventions Research Protocol Archived November 8, 2011 Screening for Hepatitis C Research Protocol Archived October 20, 2011 Acute Migraine Treatment in Emergency Settings Research Protocol Archived July 18, 2011