Kayaniyil S, Vieth R, Retnakaran R, Knight JA, Qi Y, Gerstein HC, Perkins BA, Harris SB, Zinman B, Hanley AJ. Association of vitamin D with insulin resistance and β-cell dysfunction in subjects at risk for type 2 diabetes. Diabetes Care 2010;33:1379–1381
In the print version of the article listed above, an error appears within the text that affects the interpretation of the results. It is stated in the research design and methods at the end of the first paragraph (p. 1379) and in the conclusions in the middle of both the first and third paragraphs (p. 1380) that all subjects were free of diabetes as confirmed by oral glucose tolerance tests (OGTTs). While we confirm that none of the subjects had known diabetes at the time of the assessments, a small proportion (8%) had an OGTT abnormality of early diabetes, with the vast majority of these subjects (88%) classified based on a 2-h glucose value of >11.0 mmol/l. In the research design and methods section, first paragraph (p. 1379), the last sentence should read, “The current study includes 712 subjects, 92% of whom were free of diabetes based on oral glucose tolerance tests (OGTTs). None had known diabetes at the time of the assessments.” In the conclusions section, first paragraph, the first sentence should read, “This study demonstrated independent associations of 25(OH)D with both insulin sensitivity and β-cell function in subjects without known diabetes, the majority of whom were free of diabetes based on OGTTs.” In the conclusions section, third paragraph, the second sentence should read, “In addition, the current study included a large, well-characterized multiethnic sample.” The online version reflects these changes.