Journal
PSYCHOSOMATIC MEDICINE
Volume 79, Issue 7, Pages 798-805Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/PSY.0000000000000477
Keywords
affect; continuous glucose monitoring; diabetes; Latinos
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Funding
- National Institute of Minority Health and Health Disparities [5R01MD005879-03]
- American Diabetes Association [7-13-TS-31]
- Chicago Center for Diabetes Translation Research
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Objective: This study investigated between-and within-person associations among mean levels and variability in affect, diabetes self-care behaviors, and continuously monitored glucose in Latinos with type 2 diabetes. Methods: Fifty participants (M[SD] age = 57.8 [11.7] years, 74% women, mean [SD] glycosylated hemoglobinA1c = 8.3%[1.5%]) wore a blinded continuous glucose monitor for 7 days, and they responded to twice daily automated phone surveys regarding positive affect, negative affect, and self-care behaviors. Results: Higher mean levels ofNAwere associated with highermean glucose (r = .30), greater percent hyperglycemia (r = .34) and greater percentage of out-of-range glucose (r = .34). Higher NAvariability was also related to higher mean glucose (r = .34), greater percent of hyperglycemia (r = .44) and greater percentage of out-of-range glucose (r = .43). Higher positive affect variability was related to lower percentage of hypoglycemia (r = -.33). Higher mean levels of self-care behaviors were related to lower glucose variability (r = -.35). Finally, higher self-care behavior variability was related to greater percentage of hyperglycemia (r = .31) and greater percentage of out-ofrange glucose (r = -.28). Inmultilevel regressionmodels, within-person increases frommean levels of self-care were associated with lower mean levels of glucose (b = -7.4, 95% confidence interval [CI] = -12.8 to -1.9), lower percentage of hyperglycemia (b = -0.04, 95% CI = -0.07 to -0.01), and higher percentage of hypoglycemia (b = 0.02, 95% CI = 0.01 to 0.03) in the subsequent 10-hour period. Conclusions: Near-to-real time sampling documented associations of glucosewith affect and diabetes self-care that are not detectable with traditional measures.
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