期刊
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
卷 19, 期 17, 页码 -出版社
MDPI
DOI: 10.3390/ijerph191710880
关键词
perinatal; adult-onset; late-onset; autoimmune; delivery mode; sex; offspring; NAKO
资金
- German Federal Ministry of Education and Research (BMBF) [01ER1901A PERGOLA2, 01ER1301A/B/C, 01ER1511D]
- Doctoral Scholarship of the University of Hamburg
- Helmholtz Association
- participating universities and institutes of the Leibniz Association
This study examined the association between birth order, delivery mode, daycare attendance and the risk of type 1 diabetes (T1D) in a population-based cohort. The findings suggest that being a later-born child is associated with a reduced risk of T1D, regardless of parental diabetes, migration background, birth year, and perinatal factors.
(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.
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