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

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

	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

Significance of differences among means (*) refers to Variance analysis. Significance of differences among correlation coefficients (**) has been calculated according to Snedecor and Cochran.

ISSN: 1477-7827