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Table 1 Effect estimates (odds ratio) for spina bifida-affected pregnancies associated with maternal choline intake during the periconceptional period, California 1989–1991. OR: odds ratio; CI: confidence interval.

From: CHKA and PCYT1Agene polymorphisms, choline intake and spina bifida risk in a California population

Total choline intake (mg/day)

Cases

Controls

OR

95% CI

 

103

338

  

Quartile Measure

    

≤ 289.93

34

85

Reference

 

289.93–372.01

22

84

0.66

0.35–1.21

372.02–513.24

27

85

0.79

0.44–1.43

> 513.24

20

84

0.60

0.32–1.12