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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.