Journal Article

DKFZ-2022-02142

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Birth Order, Caesarean Section, or Daycare Attendance in Relation to Child- and Adult-Onset Type 1 Diabetes: Results from the German National Cohort.

Tanoey, J. ; Baechle, C. ; Brenner, H.DKFZ* ; Deckert, A. ; Fricke, J. ; Günther, K. ; Karch, A. ; Keil, T. ; Kluttig, A. ; Leitzmann, M. ; Mikolajczyk, R. ; Obi, N. ; Pischon, T. ; Schikowski, T. ; Schipf, S. M. ; Schulze, M. B. ; Sedlmeier, A. ; Moreno Velásquez, I. ; Weber, K. S. ; Völzke, H. ; Ahrens, W. ; Gastell, S. ; Holleczek, B.DKFZ* ; Jöckel, K.-H. ; Katzke, V.DKFZ* ; Lieb, W. ; Michels, K. B. ; Schmidt, B. ; Teismann, H. ; Becher, H.

2022
MDPI AG Basel

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Please use a persistent id in citations: doi:10.3390/ijerph191710880

Abstract: (1) Background: Global incidence of type 1 diabetes (T1D) is rising and nearly half occurred in adults. However, it is unclear if certain early-life childhood T1D risk factors were also associated with adult-onset T1D. This study aimed to assess associations between birth order, delivery mode or daycare attendance and type 1 diabetes (T1D) risk in a population-based cohort and whether these were similar for childhood- and adult-onset T1D (cut-off age 15); (2) Methods: Data were obtained from the German National Cohort (NAKO Gesundheitsstudie) baseline assessment. Self-reported diabetes was classified as T1D if: diagnosis age ≤ 40 years and has been receiving insulin treatment since less than one year after diagnosis. Cox regression was applied for T1D risk analysis; (3) Results: Analyses included 101,411 participants (100 childhood- and 271 adult-onset T1D cases). Compared to 'only-children', HRs for second- or later-born individuals were 0.70 (95% CI = 0.50-0.96) and 0.65 (95% CI = 0.45-0.94), respectively, regardless of parental diabetes, migration background, birth year and perinatal factors. In further analyses, higher birth order reduced T1D risk in children and adults born in recent decades. Caesarean section and daycare attendance showed no clear associations with T1D risk; (4) Conclusions: Birth order should be considered in both children and adults' T1D risk assessment for early detection.

Keyword(s): NAKO ; adult-onset ; autoimmune ; delivery mode ; late-onset ; offspring ; perinatal ; sex

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Contributing Institute(s):

1. C070 Klinische Epidemiologie und Alternf. (C070)
2. C020 Epidemiologie von Krebs (C020)

Research Program(s):

1. 313 - Krebsrisikofaktoren und Prävention (POF4-313) (POF4-313)

Appears in the scientific report 2022

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