Size for gestational age affects the risk for type 1 diabetes in children and adolescents: a Swedish national case-control study.

Aim/hypothesis: Environmental factors are believed to contribute to the risk of developing type 1 diabetes. The aim of this study was to investigate how size for gestational age affects the risk of developing childhood type 1 diabetes.

Methods: Using the Swedish paediatric diabetes quality register and the Swedish medical birth register, children with type 1 diabetes diagnosed between 2000 and 2012 (n = 9376) were matched with four control children (n = 37,504).

Maternal obesity as a risk factor for early childhood type 1 diabetes: a nationwide, prospective, population-based case-control study.

Aims/hypothesis: Genetic and environmental factors are believed to cause type 1 diabetes. The aim of this study was to investigate the influence of maternal BMI and gestational weight gain on the subsequent risk of childhood type 1 diabetes.

Methods: Children in the Swedish National Quality Register for Diabetes in Children were matched with control children from the Swedish Medical Birth Register.

Caesarean section per se does not increase the risk of offspring developing type 1 diabetes: a Swedish population-based study.

Aims/hypothesis: Some studies have revealed a relationship between Caesarean section (CS) and type 1 diabetes, while other studies have not. By using the Swedish paediatric quality register we investigated whether birth by CS is related to the risk of developing type 1 diabetes during childhood.

Methods: All children diagnosed with type 1 diabetes from 2000 to 2012 and included in the register (n = 9,376) were matched with four controls by year, day of birth, sex and county of birth from the Swedish Medical Birth Register.