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. Author manuscript; available in PMC: 2016 May 15.
Published in final edited form as: Int J Cancer. 2014 Nov 9;136(10):2481–2485. doi: 10.1002/ijc.29291

Table 3.

Vitamin D and Childhood Brain Tumor Risk by Birth Weight

25(OH)D3
(ng/mL)		 Birth weighta (grams)
1105 – <3458
 3458 – 4847
Cases
N (%)		 Controls
N (%)		 Odds Ratio
(95% CI)		 Cases
N (%)		 Controls
N (%)		 Odds Ratio
(95% CI)
2.8 – 7.7 25 (26) 24 (20) 1.0 (Ref.) 23 (15) 37 (30) 1.0 (Ref.)
7.7 – <11.0 27 (28) 30 (24) 0.9 (0.4–1.9) 38 (25) 31 (25) 1.7 (1.0–3.3)
11.0 – <14.7 21 (22) 31 (25) 0.7 (0.3–1.4) 50 (33) 32 (26) 2.4 (1.2–4.8)
14.7 – 37.0 24 (25) 38 (31) 0.6 (0.3–1.3) 39 (26) 24 (19) 2.6 (1.2–5.6)
*

Likelihood ratio test for modification of 25(OH)D3 association with CBT by birth weight, p = 0.04

a

Birth weight stratified at median among controls