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Table 2 Mean 25(OH)D in the children with ASD compared to his/her sibling, separated by ethnic origin

From: Autism spectrum disorder and low vitamin D at birth: a sibling control study

Mothers’ ethnic origin

ASD child Mean 25(OH)D, nM (SD)

Non-ASD sibling Mean 25(OH)D, nM (SD)

t (df) a

P a

Swedish, n = 28

34.5 (20.1)

46.8 (27.8)

-2.14 (27)

0.042

Miscellaneous, n = 12

23.1 (16.5)

31.2 (24.0)

-1.55 (11)

0.015

African/Middle East, n = 18

8.4 (5.6)

9.2 (6.9)

-.42 (17)

0.68

  1. aDue to skewness, these results are calculated on square root transformed values.