TY - JOUR
T1 - The Tokyo Twin Cohort Project
T2 - Overview and initial findings
AU - Ando, Juko
AU - Nonaka, Koichi
AU - Ozaki, Koken
AU - Sato, Naho
AU - Fujisawa, Keiko K.
AU - Suzuki, Kunitake
AU - Yamagata, Shinji
AU - Takahashi, Yusuke
AU - Nakajima, Ryoko
AU - Kato, Noriko
AU - Ooki, Syuichi
PY - 2006/12
Y1 - 2006/12
N2 - The Tokyo Twin Cohort Project (ToTCoP) is a large-scale longitudinal study of 5 years based on 1619 pairs of infant twins reared together. The purpose of the study is to construct a population-based twin registry in Japan and to investigate human growth and development and twin themselves. It covers behavioral, neurological, physical and environmental variables measured by questionnaire, home visiting and brain imaging technology. The full registry contains over 47,000 multiple births collected from the Basic Resident Register, and the targeted population is 3070 probable twins of 0 to 2 years old. Preliminary analysis of the entry questionnaire data showed no serious sampling biases. Descriptive statistics of parental characteristics (parental age, gestation age, parity and placentation, maternal weight, parenting stress) and children's characteristics (body size at birth, 4 and 10 months of age, milk consumption, and sleeping and social behavior) and their correlations, genetic and environmental contributions and correlations are reported.
AB - The Tokyo Twin Cohort Project (ToTCoP) is a large-scale longitudinal study of 5 years based on 1619 pairs of infant twins reared together. The purpose of the study is to construct a population-based twin registry in Japan and to investigate human growth and development and twin themselves. It covers behavioral, neurological, physical and environmental variables measured by questionnaire, home visiting and brain imaging technology. The full registry contains over 47,000 multiple births collected from the Basic Resident Register, and the targeted population is 3070 probable twins of 0 to 2 years old. Preliminary analysis of the entry questionnaire data showed no serious sampling biases. Descriptive statistics of parental characteristics (parental age, gestation age, parity and placentation, maternal weight, parenting stress) and children's characteristics (body size at birth, 4 and 10 months of age, milk consumption, and sleeping and social behavior) and their correlations, genetic and environmental contributions and correlations are reported.
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U2 - 10.1375/183242706779462480
DO - 10.1375/183242706779462480
M3 - Review article
C2 - 17254415
AN - SCOPUS:33846226397
SN - 1832-4274
VL - 9
SP - 817
EP - 826
JO - Twin Research and Human Genetics
JF - Twin Research and Human Genetics
IS - 6
ER -