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Table 3—

Multivariate survival analysis examining maternal vitamin D intake via food during pregnancy and risk of IA and persistent IA

Risk factors*IA adjusted HR (95% CI)Wald χ2PPersistent IA adjusted HR (95% CI)Wald χ2P
n 16  11  
Vitamin D intake via food (IU) 0.37 (0.17–0.78) 0.020 0.58 (0.27–1.28) 0.205 
First-degree type 1 diabetic relative 5.15 (1.45–18.28) 0.021 6.74 (1.62–28.03) 0.031 
HLA-DR 3/4, DQ8 genotype 9.79 (1.69–56.83) 0.029 9.14 (1.50–55.85) 0.054 
GDM 7.78 (1.83–33.03) 0.011 2.05 (0.22–19.02) 0.528 
Child’s ethnicity (% non-Hispanic Caucasian) 6.97 (0.88–55.46) 0.088 Not calculable NA 
Risk factors*IA adjusted HR (95% CI)Wald χ2PPersistent IA adjusted HR (95% CI)Wald χ2P
n 16  11  
Vitamin D intake via food (IU) 0.37 (0.17–0.78) 0.020 0.58 (0.27–1.28) 0.205 
First-degree type 1 diabetic relative 5.15 (1.45–18.28) 0.021 6.74 (1.62–28.03) 0.031 
HLA-DR 3/4, DQ8 genotype 9.79 (1.69–56.83) 0.029 9.14 (1.50–55.85) 0.054 
GDM 7.78 (1.83–33.03) 0.011 2.05 (0.22–19.02) 0.528 
Child’s ethnicity (% non-Hispanic Caucasian) 6.97 (0.88–55.46) 0.088 Not calculable NA 
*

All variables entered into model simultaneously;

HR represents risk for a 155.6 IU SD difference in intake;

all affected were non-Hispanic Caucasian.

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