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Twin's Birth-Order Differences in Height and Body Mass Index From Birth to Old Age: A Pooled Study of 26 Twin Cohorts Participating in the CODATwins Project
- Authors
- Yokoyama Y.[Yokoyama Y.]; Jelenkovic A.[Jelenkovic A.]; Sund R.[Sund R.]; Sung J.[Sung J.]; Hopper J.L.[Hopper J.L.]; Ooki S.[Ooki S.]; Heikkilä K.[Heikkilä K.]; Aaltonen S.[Aaltonen S.]; Tarnoki A.D.[Tarnoki A.D.]; Tarnoki D.L.[Tarnoki D.L.]; Willemsen G.[Willemsen G.]; Bartels M.[Bartels M.]; Van Beijsterveldt T.C.E.M.[Van Beijsterveldt T.C.E.M.]; Saudino K.J.[Saudino K.J.]; Cutler T.L.[Cutler T.L.]; Nelson T.L.[Nelson T.L.]; Whitfield K.E.[Whitfield K.E.]; Wardle J.[Wardle J.]; Llewellyn C.H.[Llewellyn C.H.]; Fisher A.[Fisher A.]; He M.[He M.]; Ding X.[Ding X.]; Bjerregaard-Andersen M.[Bjerregaard-Andersen M.]; Beck-Nielsen H.[Beck-Nielsen H.]; Sodemann M.[Sodemann M.]; Song Y.-M.[Song Y.-M.]; Yang S.[Yang S.]; Lee K.[Lee K.]; Jeong H.-U.[Jeong H.-U.]; Knafo-Noam A.[Knafo-Noam A.]; Mankuta D.[Mankuta D.]; Abramson L.[Abramson L.]; Burt S.A.[Burt S.A.]; Klump K.L.[Klump K.L.]; Ordoñana J.R.[Ordoñana J.R.]; Sánchez-Romera J.F.[Sánchez-Romera J.F.]; Colodro-Conde L.[Colodro-Conde L.]; Harris J.R.[Harris J.R.]; Brandt I.[Brandt I.]; Nilsen T.S.[Nilsen T.S.]; Craig J.M.[Craig J.M.]; Saffery R.[Saffery R.]; Ji F.[Ji F.]; Ning F.[Ning F.]; Pang Z.[Pang Z.]; Dubois L.[Dubois L.]; Boivin M.[Boivin M.]; Brendgen M.[Brendgen M.]; Dionne G.[Dionne G.]; Vitaro F.[Vitaro F.]; Martin N.G.[Martin N.G.]; Medland S.E.[Medland S.E.]; Montgomery G.W.[Montgomery G.W.]; Magnusson P.K.E.[Magnusson P.K.E.]; Pedersen N.L.[Pedersen N.L.]; Aslan A.K.D.[Aslan A.K.D.]; Tynelius P.[Tynelius P.]; Haworth C.M.A.[Haworth C.M.A.]; Plomin R.[Plomin R.]; Rebato E.[Rebato E.]; Rose R.J.[Rose R.J.]; Goldberg J.H.[Goldberg J.H.]; Rasmussen F.[Rasmussen F.]; Hur Y.-M.[Hur Y.-M.]; Sørensen T.I.A.[Sørensen T.I.A.]; Boomsma D.I.[Boomsma D.I.]; Kaprio J.[Kaprio J.]; Silventoinen K.[Silventoinen K.]
- Issue Date
- Apr-2016
- Publisher
- CAMBRIDGE UNIV PRESS
- Keywords
- birth order; BMI; height; zygosity
- Citation
- TWIN RESEARCH AND HUMAN GENETICS, v.19, no.2, pp.112 - 124
- Indexed
- SCIE
SCOPUS
- Journal Title
- TWIN RESEARCH AND HUMAN GENETICS
- Volume
- 19
- Number
- 2
- Start Page
- 112
- End Page
- 124
- ISSN
- 1832-4274
- Abstract
- We analyzed birth order differences in means and variances of height and body mass index (BMI) in monozygotic (MZ) and dizygotic (DZ) twins from infancy to old age. The data were derived from the international CODATwins database. The total number of height and BMI measures from 0.5 to 79.5 years of age was 397,466. As expected, first-born twins had greater birth weight than second-born twins. With respect to height, first-born twins were slightly taller than second-born twins in childhood. After adjusting the results for birth weight, the birth order differences decreased and were no longer statistically significant. First-born twins had greater BMI than the second-born twins over childhood and adolescence. After adjusting the results for birth weight, birth order was still associated with BMI until 12 years of age. No interaction effect between birth order and zygosity was found. Only limited evidence was found that birth order influenced variances of height or BMI. The results were similar among boys and girls and also in MZ and DZ twins. Overall, the differences in height and BMI between first-and second-born twins were modest even in early childhood, while adjustment for birth weight reduced the birth order differences but did not remove them for BMI.
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