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(1954)
Data on twins born in Italy
By Fraccaro (1956)
A CONTRIBUTION TO THE STUDY OF BIRTH WEIGHT BASED ON AN ITALIAN SAMPLEAnnals of Human Genetics, 20
(1952)
Birth weight and length of gestation of twins, together with maternal age. parity and KARN
(1952)
Birth weight and length of gestation of twins, together with maternal age
(1953)
Peso alle nascita, durata della gestaeionr, et8. maternn
By Morton (1955)
THE INHERITANCE OF HUMAN BIRTH WEIGHT*Annals of Human Genetics, 20
Fraccaro Fraccaro (1953)
Peso alla nascita, durata della gestazione, età materna, parità e sopravvivcnza nei gemelliArch. Klaus-Stift. VererbForsch., 28
(1955)
The inhwitance of human birth
M. Karn (1952)
Birth weight and length of gestation of twins, together with maternal age, parity and survival rate.Annals of eugenics, 16 4
M. Karn (1953)
Twin data; a further study of birth weight, gestation time, maternal age, order of birth, and survival.Annals of eugenics, 17 3
(1956)
Personal commiinic * ation
E. Robson (1955)
BIRTH WEIGHT IN COUSINSAnnals of Human Genetics, 19
Penrose Penrose (1954)
Genetical factors affecting the growth of the foetusLa prophylaxie en gunecologie et obstetrique, 1
N. McArthur (1953)
Statistics of twin births in Italy, 1949 and 1950.Annals of eugenics, 17 3
(1953)
Genetical factors affecting the growth of the foetus. I n La prophyluxre eft qy~e'colopr et obstktriqw, 1, 1. I. ConfCIrences et rapports du Congrhs international de gynGcologrc et l'ohat6trique
(1956)
maternn, parith e mprnvvivrnza ntli F R A C c A l t o
T. Mckeown, R. Record (1954)
Influence of pre-natal environment on correlation between birth weight and parental height.American journal of human genetics, 6 4
SUMMARY A sample of 237 twin birthB drawn from the records of a maternity clinic has been analysed with regard to birth weight, gestation time, maternal age, parity and survival. The sample was divided into like‐ and unlike‐sex groups. The like‐sex twins have higher mean birth weight and length of gestation with lower mother's age and parity. The correlation of birth weight is 0–765 for like‐sex and 0–792 for unlike‐sex twins. The correlation between male and female twin pairs is 0–826. The number of monozygotic twins in this sample is estimated to be 81 and the estimated weight‐weight correlation for these is 0–815. Comparison has been made possible with similar data on English and Italian twin births published by Karn. The influences of the variables on the survival has been estimated.
Annals of Human Genetics – Wiley
Published: Mar 1, 1957
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