Effect of Carelink, an internet-based insulin pump monitoring system, on glycemic control in rural and urban children with type 1 diabetes mellitus

Abstract

To determine whether use of the internet-based insulin pump monitoring system, Carelink, improved glycemic control in rural and urban children treated with insulin pump therapy. We reviewed records of 94 children treated with insulin pump therapy between the years 2004 and 2007 and compared glycemic control, diabetes self-care measures, frequency of clinic visits, and geographic location associated with Carelink use. Carelink users showed improvement in hemoglobin A1c (HbA1c) levels [8.0 +/- 0.1 (SE) vs. 7.7 +/- 0.1 (SE), p = 0.002]. Carelink users uploaded pump and glucometer data 2.2 +/- 1.8 (SD) times per month over 0.8 +/- 0.4 (SD) yr. Patients who had no access to carelink software and were followed in a conventional manner showed no change in HbA1c levels [8.0 +/- 0.2 (SE) vs. 8.1 +/- 0.2 (SE), p = 0.17] during the study period. Carelink non-users, defined as patients who had Carelink access but did not use it, had a higher HbA1c level at the start of the study and did not change over the study period [8.9 +/- 0.2 (SE) vs. 9.0 +/- 0.3 (SE), p = 0.82]. Rural Carelink users showed improvement in HbA1c levels following Carelink use [7.9 +/- 0.2 (SE) vs. 7.4 +/- 0.2 (SE), p = 0.001], yet had significantly fewer clinic visits per year compared with urban patients [2.8 +/- 0.2 (SE) vs. 3.5 +/- 0.1 (SE), p = 0.001]. Use of the Carelink system was associated with improved glycemic control in children with type 1 diabetes on insulin pump therapy.