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Cohort study
Greater diabetes-care contact frequency is associated with more rapid achievement of care goals but interpretation of finding requires consideration of patient adherence and motivation
  1. Patrick J O'Connor
  1. HealthPartners Research Foundation, Minneapolis, Minnesota, USA
  1. Correspondence to Patrick J O’Connor
    HealthPartners Research Foundation, 8170 33rd Avenue South P.O. Box 1524 Minneapolis, MN 55440-1524, USA; patrick.j.oconnor{at}

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Recommended revisit intervals for adults with diabetes or other chronic conditions are based largely on expert opinion due to lack of evidence to support specific recommendations. Without randomised trial data, analysis of observational data to assess the association of specific visit interval with care outcomes is a desirable approach.


This retrospective cohort study includes 26 496 adults with diabetes and elevated A1c, blood pressure (BP) or low-density lipoprotein cholesterol (LDL) values who received diabetes care from primary care physicians from 2000 to 2009. The association of primary care contact frequency (any chart note, with or without face-to-face visit) with time to address control of haemoglobin A1c (A1c), BP or LDL was estimated using marginal …

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  • Competing interests None.