期刊
DIABETES CARE
卷 41, 期 6, 页码 1180-1187出版社
AMER DIABETES ASSOC
DOI: 10.2337/dc17-2271
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资金
- England Department of Health Policy Research Programme [10090001]
- National Institute for Health Research Biomedical Research Centre at Great Ormond Street Hospital for Children National Health Service Foundation Trust
- University College London
- National Health Service England
- Welsh Government
- South Eastern Norway Regional Health Authority
- Health Research Fund of Central Denmark Region
- Swedish Association of Local Authorities and Regions (SALAR)
- German Center for Diabetes Research (DZD)
- German Diabetes Association (DDG)
- European Foundation for the Study of Diabetes (EFSD)
- EU-IMI2 consortium INNODIA
- Helmsley Charitable Trust
- National Institute of Diabetes and Digestive and Kidney Diseases
- Eunice Kennedy Shriver National Institute of Child Health and Human Development
- Jaeb Center for Health Research
OBJECTIVE International studies on childhood type 1 diabetes (T1D) have focused on whole-country mean HbA(1c) levels, thereby concealing potential variations within countries. We aimed to explore the variations in HbA(1c) across and within eight high-income countries to best inform international benchmarking and policy recommendations. RESEARCH DESIGN AND METHODS Data were collected between 2013 and 2014 from 64,666 children with T1D who were < 18 years of age across 528 centers in Germany, Austria, England, Wales, U.S., Sweden, Denmark, and Norway. We used fixed-and random-effects models adjusted for age, sex, diabetes duration, and minority status to describe differences between center means and to calculate the proportion of total variation in HbA(1c) levels that is attributable to between-center differences (intraclass correlation [ICC]). We also explored the association between within-center variation and children's glycemic control. RESULTS Sweden had the lowest mean HbA(1c) (59mmol/mol [7.6%]) and together with Norway and Denmark showed the lowest between-center variations (ICC <= 4%). Germany and Austria had the next lowest mean HbA(1c) (61-62 mmol/mol [7.7-7.8%]) but showed the largest center variations (ICC similar to 15%). Centers in England, Wales, and the U.S. showed low-to-moderate variation around high mean values. In pooled analysis, differences between counties remained significant after adjustment for children characteristics and center effects (P value < 0.001). Across all countries, children attending centers with more variable glycemic results had higher HbA(1c) levels (5.6mmol/mol [0.5%] per 5mmol/mol [0.5%] increase in center SD of HbA(1c) values of all children attending a specific center). CONCLUSIONS A tsimilar average levels of HbA(1c), countries display different levels of center variation. The distribution of glycemic achievement within countries should be considered in developing informed policies that drive quality improvement.
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