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Table 4 Relation between OSB and qualitative variables

From: Evaluation of sensitivity and accuracy of maternal serum alpha fetoprotein to the diagnosis of open spina bifida in comparison with sonographic findings of open spina bifida and Chiari II malformation in pregnant women

  OSB
Negative Positive P-value
Maternal age 29.94 (± 5.259) 29 (± 6.272) 0.735
Fetal age 17.24 (± 2.43) 15.5 (± 3.109) 0.182
Gestational diabetes    
Positive 1 0 0.77
Negative 50 4  
Abortion    
Positive 12 1 0.86
Negative 30 2  
Acid folic use    
Positive 32 1 0.000
Negative 1 2  
Consanguineous marriage    
Positive 1 0 0.748
Negative 29 3