528-P: Support for Using Objective Data from Diabetes Devices to Assess Self-Management Behaviors in Adolescents with T1D

The purpose of this study was to examine accuracy of self-reported blood glucose monitoring compared to objectively downloaded data from diabetes devices. Devices were downloaded from 79 adolescents (44% male, age=14.9±1.9 years; A1C=9.8±1.6%) who were participating in a RCT that provided integrated behavioral intervention to improve A1C. Objective blood glucose data were obtained for up to 90 days prior to enrollment. Prior to any intervention, adolescents self-reported blood glucose monitoring frequency on the Diabetes Self-Management Profile (DSMP). Each adolescent's self-report was compared to his or her device data. Almost half (48.6%) overestimated the frequency of fingerstick blood glucose monitoring; only 28.9% accurately estimated and 22.4% underestimated. Objectively measured frequency of blood glucose monitoring was significantly associated with A1C (p