Coexisiting type 1 diabetes and celiac disease is associated with lower Hba1c when compared to type 1 diabetes alone: data from the Australasian Diabetes Data Network (ADDN) registry.

"Declarations Conflict of interestThe authors have no relevant financial or non-financial interests to disclose. Ethical Standard StatementAll centres had Human Research or Health and Disability Ethics Committee approval for participation in the Australasian Diabetes Data Network (ADDN); ADDN has an optout consent model. The current study was approved by the University of the Sunshine Coast Human Research Ethics Committee, Australia (reference: E19113). Informed ConsentAll of the young people have provided consent for their data to be used in the Australasian Diabetes Data Network registry. Conflict of interest The authors have no relevant financial or non-financial interests to disclose."

"Funding Open Access funding enabled and organized by CAUL and its Member Institutions. Maria E. Craig was supported by a NHMRC practitioner fellowship (APP1136735)."