Syuichi Ooki

Summary

Country: Japan

Publications

  1. ncbi request reprint Genetic and environmental influences on finger-sucking and nail-biting in Japanese twin children
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Kahoku, Ishikawa, Japan
    Twin Res Hum Genet 8:320-7. 2005
  2. ncbi request reprint Genetic and environmental influences on stuttering and tics in Japanese twin children
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Kahoku, Ishikawa, Japan
    Twin Res Hum Genet 8:69-75. 2005
  3. ncbi request reprint Comparison of obstetric and birthweight characteristics between the two largest databases of Japanese twins measured in childhood
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Kahoku, Ishikawa, Japan
    Twin Res Hum Genet 8:63-8. 2005
  4. ncbi request reprint Genetic and environmental influences on the handedness and footedness in Japanese twin children
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Kahoku, Ishikawa, Japan
    Twin Res Hum Genet 8:649-56. 2005
  5. ncbi request reprint Characteristics of a Japanese adult twin database of high school graduates
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Kahoku, Ishikawa, Japan
    Twin Res 7:430-4. 2004
  6. ncbi request reprint Twin database of the secondary school attached to the Faculty of Education of the University of Tokyo
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Tsu 7 1 Nakanuma, Kahoku, Ishikawa 929 1212, Japan
    Twin Res Hum Genet 9:827-31. 2006
  7. ncbi request reprint Population-based database of multiples in childhood of Ishikawa Prefecture, Japan
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Tsu 7 1 Nakanuma, Kahoku, Ishikawa 929 1212, Japan
    Twin Res Hum Genet 9:832-7. 2006
  8. ncbi request reprint Zygosity diagnosis in young twins by questionnaire for twins' mothers and twins' self-reports
    Syuichi Ooki
    Department of Clinical Bioinformatics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
    Twin Res 7:5-12. 2004
  9. pmc Motor development of Japanese twins in childhood as reported by mothers
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Tsu 7 1 Nakanuma, 929 1212, Kahoku, Ishikawa, Japan
    Environ Health Prev Med 11:55-64. 2006
  10. ncbi request reprint Estimation of the contribution of assisted and non-assisted reproductive technology fertility treatments to multiple births during the past 30 years in Japan: 1979-2008
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Ishikawa, Japan
    Twin Res Hum Genet 14:476-83. 2011

Detail Information

Publications25

  1. ncbi request reprint Genetic and environmental influences on finger-sucking and nail-biting in Japanese twin children
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Kahoku, Ishikawa, Japan
    Twin Res Hum Genet 8:320-7. 2005
    ..7% of males (tetrachoric correlation: r = .40) and 15.7% of females (r = .32), which was attributed partly to common genetic or environmental factors. The proportion of total shared variance explained by genetic factors was 67%...
  2. ncbi request reprint Genetic and environmental influences on stuttering and tics in Japanese twin children
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Kahoku, Ishikawa, Japan
    Twin Res Hum Genet 8:69-75. 2005
    ..8% of males (tetrachoric correlation: r = .18) and 0.5% of females (r = .31), which was attributed partly (nearly 10% of total genetic variance of each trait) to the common genetic factors, with genetic correlation of r = .32...
  3. ncbi request reprint Comparison of obstetric and birthweight characteristics between the two largest databases of Japanese twins measured in childhood
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Kahoku, Ishikawa, Japan
    Twin Res Hum Genet 8:63-8. 2005
    ..We conclude that the obstetric and birthweight feature data from both groups should be considered to construct twin growth charts based on the methods of sample selection...
  4. ncbi request reprint Genetic and environmental influences on the handedness and footedness in Japanese twin children
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Kahoku, Ishikawa, Japan
    Twin Res Hum Genet 8:649-56. 2005
    ..It was concluded that the genetic effects on handedness and footedness are relatively small, as is their association; moreover, considerably large twin samples are needed to obtain stable and appropriate results...
  5. ncbi request reprint Characteristics of a Japanese adult twin database of high school graduates
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Kahoku, Ishikawa, Japan
    Twin Res 7:430-4. 2004
    ..The limitation of this cohort is its selection bias concerning socioeconomic status and its imbalance in favor of monozygotic pairs...
  6. ncbi request reprint Twin database of the secondary school attached to the Faculty of Education of the University of Tokyo
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Tsu 7 1 Nakanuma, Kahoku, Ishikawa 929 1212, Japan
    Twin Res Hum Genet 9:827-31. 2006
    ..Three independent datasets exist: one for applicants (11-12 years), one for students (12-18 years), and one for graduates (18-72 years). These three historical databases and research perspectives are introduced herein...
  7. ncbi request reprint Population-based database of multiples in childhood of Ishikawa Prefecture, Japan
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Tsu 7 1 Nakanuma, Kahoku, Ishikawa 929 1212, Japan
    Twin Res Hum Genet 9:832-7. 2006
    ..This registry aims not only to aid research on human genetics and maternal and child health, but also to contribute to the development of welfare programs for families with multiples...
  8. ncbi request reprint Zygosity diagnosis in young twins by questionnaire for twins' mothers and twins' self-reports
    Syuichi Ooki
    Department of Clinical Bioinformatics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
    Twin Res 7:5-12. 2004
    ..In conclusion, twin zygosity can be estimated by the use of the mothers' simple questionnaire with sufficient accuracy even in very young twins about 1 year of age...
  9. pmc Motor development of Japanese twins in childhood as reported by mothers
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Tsu 7 1 Nakanuma, 929 1212, Kahoku, Ishikawa, Japan
    Environ Health Prev Med 11:55-64. 2006
    ..The present study was performed to clarify the factors associated with the motor development of twins...
  10. ncbi request reprint Estimation of the contribution of assisted and non-assisted reproductive technology fertility treatments to multiple births during the past 30 years in Japan: 1979-2008
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Ishikawa, Japan
    Twin Res Hum Genet 14:476-83. 2011
    ..Given the medical and social impact of multiple births, it is imperative to construct a hospital-based monitoring system for fertility treatments, specially non-ART fertility treatments and multiple births...
  11. doi request reprint Two cohort and three independent anonymous twin projects at the Keio Twin Research Center (KoTReC)
    Juko Ando
    Faculty of Letters, Keio University, Tokyo, Japan
    Twin Res Hum Genet 16:202-16. 2013
    ..We discuss the challenges in conducting twin research in Japan...
  12. ncbi request reprint Physical growth charts from birth to six years of age in Japanese twins
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Tsu 7 1, Nakanuma, Kahoku, Ishikawa 929 1212, Japan
    J Epidemiol 14:151-60. 2004
    ..The purpose of this study was to analyze the characteristics of the physical growth of twins in childhood and to present growth charts of Japanese twins...
  13. ncbi request reprint Zygosity misclassification of twins at birth in Japan
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Kahoku, Japan
    Twin Res 7:228-32. 2004
    ..Concluding, even now many monozygotic twins in Japan may be misclassified as dizygotic at birth by obstetricians based solely on the number of placenta...
  14. doi request reprint Japanese database of families with twins and higher-order multiples
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Japan
    Twin Res Hum Genet 16:221-5. 2013
    ..One of the ultimate aims of this research was to provide evidence-based information on parenting multiples from pregnancy through childhood to families with multiples...
  15. ncbi request reprint The Tokyo Twin Cohort Project: overview and initial findings
    Juko Ando
    Faculty of Letters, Keio University, Minato ku, Tokyo, Japan
    Twin Res Hum Genet 9:817-26. 2006
    ....
  16. doi request reprint Estimation of the contribution of assisted and non-assisted reproductive technology fertility treatments to multiple births during the past 30 years in Japan: 1979-2008
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Ishikawa, Japan
    Twin Res Hum Genet 14:476-83. 2011
    ..Given the medical and social impact of multiple births, it is imperative to construct a hospital-based monitoring system for fertility treatments, specially non-ART fertility treatments and multiple births...
  17. ncbi request reprint Effect of maternal age and fertility treatment on the increase in multiple births in Japan: vital statistics, 1974-2009
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Ishikawa, Japan
    J Epidemiol 21:507-11. 2011
    ..The present study used vital-statistics data to estimate the effect of maternal age and fertility treatment on the number and rate of multiple live births in Japan from 1974 through 2009...
  18. doi request reprint Twin database of the secondary school attached to the Faculty of Education of the University of Tokyo: lifecourse database of twins
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Japan
    Twin Res Hum Genet 16:226-30. 2013
    ..Record linkage of these three databases should facilitate several important research projects; for example, the lifecourse genetic epidemiologic studies and verification of so-called developmental origin of health and disease hypothesis...
  19. ncbi request reprint Reference birth weight, length, chest circumference, and head circumference by gestational age in Japanese twins
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Kahoku, Ishikawa 929 1212, Japan
    J Epidemiol 13:333-41. 2003
    ....
  20. pmc Theoretical model of the relationship between single embryo transfer rate and multiple pregnancy rate in Japan
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, 1 1, Gakuendai, Kahoku 929 1210, Japan
    J Pregnancy 2012:620753. 2012
    ..The multiple pregnancy rate seemed to be influenced by the improvement of the total pregnancy rate of ART in the early period and by the MZ twinning after SET in the final period. The estimated MZ twinning rate after SET was around 2%...
  21. ncbi request reprint The effect of an increase in the rate of multiple births on low-birth-weight and preterm deliveries during 1975-2008
    Syuichi Ooki
    Department of Health Science, Ishikawa Prefectural Nursing University, Ishikawa, Japan
    J Epidemiol 20:480-8. 2010
    ....
  22. ncbi request reprint Analysis of factors affecting birthweight, birth length and head circumference: study of Japanese triplets
    Yoshie Yokoyama
    Faculty of Health Sciences, Okayama University Medical School, Okayama City, Okayama, Japan
    Twin Res Hum Genet 8:657-63. 2005
    ..8 kg/m2. Concerning head circumference, the median head circumference of male neonates was approximately 0.5 cm longer than female neonates. Compared to singleton neonates, the median head circumference of triplets was almost the same...
  23. ncbi request reprint A comparison of twin birthweight data from Australia, the Netherlands, the United States, Japan, and South Korea: are genetic and environmental variations in birthweight similar in Caucasians and East Asians?
    Yoon Mi Hur
    Seoul National University Hospital, Seoul, South Korea
    Twin Res Hum Genet 8:638-48. 2005
    ..Recent molecular findings and specific environmental factors that are subsumed by maternal effects are discussed...
  24. ncbi request reprint Breast-feeding and bottle-feeding of twins, triplets and higher order multiple births
    Yoshie Yokoyama
    Faculty of Health Sciences, Okayama University Medical School, 2 5 1 Shikata cho, Okayama City, Okayama 700 8558, Japan
    Nihon Koshu Eisei Zasshi 51:969-74. 2004
    ....
  25. ncbi request reprint [Birth weight and height characteristics of triplets]
    Yoshie Yokoyama
    College of Medical Technology, Kyoto University
    Nihon Koshu Eisei Zasshi 50:216-24. 2003
    ..This study was conducted to assess the birth weight and height in triplets, and to identify associated factors...