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The prognosis for glycemic status among children and youth with obesity 2 years after entering a weight management program
Author(s) -
Al Khalifah Reem,
Thabane Lehana,
Tarnopolsky Mark A,
Morrison Katherine M
Publication year - 2018
Publication title -
pediatric diabetes
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.678
H-Index - 75
eISSN - 1399-5448
pISSN - 1399-543X
DOI - 10.1111/pedi.12675
Subject(s) - prediabetes , medicine , glycemic , body mass index , hazard ratio , anthropometry , prospective cohort study , cohort , impaired fasting glucose , proportional hazards model , obesity , confidence interval , diabetes mellitus , impaired glucose tolerance , type 2 diabetes , endocrinology , insulin resistance , insulin
Background To address gaps in knowledge of the longitudinal trajectory of dysglycemia in children with obesity, this study aimed to: (1) describe the changes in glycemic status over 2 years; (2) establish a predictive model for development of prediabetes among children with euglycemia; and (3) evaluate the influence of change in body mass index (BMI) z‐score on glycemic status. Methods Children aged 5 to 17 years entered this prospective, longitudinal study at the time of entry to a weight management program. Measures included a 75‐g oral glucose tolerance test (OGTT), fasting blood glucose, hemoglobin A1c (HbA1c), lipid profile, liver enzymes and anthropometric measures at baseline, 1 and 2 years. Cox proportional hazard was used to build a predictive model for prediabetes. Results The cohort included 270 children, mean age: 11.6 ± 2.7 years and BMI z‐score: 3.1. The baseline prevalence of prediabetes, based upon elevated 2‐hour glucose in OGTT or HbA1c, was 100/270 (37.0%). Among children with prediabetes at baseline, 53 (53.0%) continued to have prediabetes over the following 2 years, 15 (15.0%) were euglycemic at 1 year and had prediabetes at 2 years, 20 (20.0%) became euglycemic and remained so. Change in BMI z‐score predicted dysglycemic status at 2 years. Among those euglycemic at baseline, the incidence of prediabetes was 14 (8.2%) after 1 year, 20 (12.8%) at 2 years. Predictors of incident prediabetes were baseline BMI z ‐score; hazard ratio (HR): 1.72, 95th confidence interval (CI: 1.08, 2.74) and baseline HbA1c HR: 1.26, 95th CI (1.02‐1.56) when controlling for age, family history of diabetes and sex. Conclusion Prediabetes presents significant morbidity in children with obesity. Family‐based lifestyle interventions might delay prediabetes progression.