Table 3

RR for SIA and SIA subtype by maternal age, adjusted for register and year*

Unadjusted RR (95% CrI)Adjusted RR (95% CrI)
Maternal age (years)SIADuodenal atresiaJIASIADuodenal atresiaJIA
<201.3 (1.0 to 1.8); p=0.081.2 (0.8 to 1.9); p=0.351.4 (0.9 to 2.2); p=0.121.3 (1.0 to 1.8); p=0.091.2 (0.8 to 1.8); p=0.391.4 (0.9 to 2.1); p=0.12
20–291 (reference)1 (reference)1 (reference)1 (reference)1 (reference)1 (reference)
≥300.9 (0.8 to 1.1); p=0.461.0 (0.8 to 1.2); p=0.830.9 (0.7 to 1.1); p=0.380.9 (0.8 to 1.1); p=0.331.0 (0.8 to 1.2); p=0.670.9 (0.7 to 1.1); p=0.34
  • * Cases with chromosomal or genetic syndromes, gastroschisis or multiple (or unknown) births were excluded from this analysis.

  • CrI, credible interval; JIA, jejunoileal atresia; SIA, small intestinal atresia.