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Table 3 Comparison of the nonparametric characteristics of women with unexplained elevations of MSAFP according to those with and without complications of pregnancy.

From: The C677T methylenetetrahydrofolate reductase variant and third trimester obstetrical complications in women with unexplained elevations of maternal serum alpha-fetoprotein

Nonparametric Characteristics Cases Controls p value
Location    
   Winnipeg 44 63 0.854
   southern city 3 2  
   southern town 3 5  
   southern rural 8 8  
   northern city 2 1  
   northern town 1 4  
   northern rural 5 7  
ethnicity    0.972
   Caucasian 52 66  
   Aborginal 2 2  
   Mixed Caucasian/Aboriginal 7 6  
   Mixed Caucasian/Black 1 3  
   Asian 1 1  
   Mixed Caucasian/Asian 1 1  
   Unknown 3 1  
diabetes in pregnancy 2/67 1/80 0.207
maternal smoking present (0 = nonsmoker, 1–3 = half pks/day increments) 0 = 47, 1 = 11, 2 or more = 9 0 = 60, 1 = 8, 2 or more = 12 0.721
gender of baby 27 females, 40 males 42 females, 38 males 0.352
parity = number of women 0 = 37, 1 = 20, 2 = 7, 3 or more = 3 0 = 40, 1 = 29, 2 = 7, 3 or more = 4 0.254
previous miscarriages 11/67 15/80 0.203
previous case pregnancy 1 0 0.967