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. 2012 Jan 11;20(5):516–520. doi: 10.1038/ejhg.2011.242

Table 1. Characteristic of NTD and control group.

Characteristic Case Control Pa
n 50 50  
Age (weeks)     0.966
 <20 7 8  
 20–24 26 25  
 25–29 14 13  
 ≥30 3 4  
       
Sex     0.680
 Female 32 30  
 Male 18 20  
a

Calculated by χ2-test.