In the research design and methods section of the article cited above, page 454, the sentences “We used data from the Swedish Childhood Diabetes Register (SCDR), Swedish National Diabetes Register (NDR), and the Swedish National Patient Register (NPR) to identify patients (probands) born in Sweden from 1964 onward with onset of type 1 diabetes before 18 years of age. Since 1 July 1977, the SCDR has recorded new incidents of type 1 diabetes in children below the age of 15 years with high level of national coverage (96–99%) (13)” should have read, “We used data from the Swedish Pediatric Diabetes Quality Registry (SWEDIABKIDS), Swedish National Diabetes Register (NDR), and the Swedish National Patient Register (NPR) to identify patients (probands) born in Sweden from 1964 onward with onset of type 1 diabetes before 18 years of age. Since 2000, the SWEDIABKIDS has been recording data from all Swedish pediatric diabetes centers reaching 99% national coverage in 2007 (13).”
In the research design and methods section, page 454, the sentence “Type 1 diabetes was defined as having such a diagnosis in the SCDR or NDR or an ICD code in the NPR (ICD-8: 250.00–250.09; ICD-9: 250A–250X; ICD-10: E10)” should have read, “Type 1 diabetes was defined as having such a diagnosis in the SWEDIABKIDS or NDR or an ICD code in the NPR (ICD-8: 250.00–250.09; ICD-9: 250A–250X; ICD-10: E10).”
On page 459, reference 13 (Berhan Y, Waernbaum I, Lind T, Möllsten A, Dahlquist G; Swedish Childhood Diabetes Study Group. Thirty years of prospective nationwide incidence of childhood type 1 diabetes: the accelerating increase by time tends to level off in Sweden. Diabetes 2011;60:577–581) should be corrected as follows: Samuelsson U, Steineck I, Gubbjornsdottir S. A high mean-HbA1c value 3–15 months after diagnosis of type 1 diabetes in childhood is related to metabolic control, macroalbuminuria, and retinopathy in early adulthood—a pilot study using two nation-wide population based quality registries. Pediatr Diabetes 2014;15:229–235.
These errors do not affect the results or conclusion of the study. The online version reflects these changes.