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Table 2 Distribution of neonatal parameters in relation to ACP1 phenotypes.

From: The genetics of feto-placental development: A study of acid phosphatase locus 1 and adenosine deaminase polymorphisms in a consecutive series of newborn infants

  ACP1 phenotypes Significance of difference among phenotypes (p)
  A B C BA CA CB  
Absolute frequencies 34 163 2 123 9 30  
Percent frequencies 9.4% 45.2% 0.6% 34.1% 2.5% 8.3%  
Birth weight (gr)        
Mean 3345 3250 3645 3338 2837 3244 0.141 (*)
S.E. 85 46 575 44 333 90  
Placental weight(gr)        
Mean 590 594 615 571 517 540 0.491(*)
S.E. 23 17 135 12 46 21  
Gestational age(wks)        
Mean 40.00 39.61 39.50 39.77 38.11 39.53 0.405(*)
S.E. 0.41 0.20 1.50 0.15 1.57 0.40  
Median 40.00 40.00 39.50 40.00 40.00 40.00  
Correlation between birth weight and placental weight (r) 0.69 0.18 - 0.31 0.77 0.68 0.005(**)
Significance of r (p) 0.001 0.029 - 0.001 0.025 0.001  
  1. Significance of differences among means (*) refers to Variance analysis. Significance of differences among correlation coefficients (**) has been calculated according to Snedecor and Cochran.