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      Familial and Special Twin Influences on Cigarette Use Initiation

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          Abstract

          Background

          Shared experiences within families play an important role in the initiation of cigarette use among adolescents. Behavioral genetic studies using various samples have implicated that the shared environment that twins experience is an important source of influence on whether adolescents initiate cigarette use. Whether the special twin environment, in addition to the shared environment, contributes significantly to making twin siblings more similar in cigarette initiation and whether the influence of the special twin environment persists into adulthood is less clear.

          Methods

          Data for this study came from the National Longitudinal Survey of Adolescent Health. Twin, full-, and half-sibling pairs between the ages of 12 and 33 were separated into three age groups, with about 3,000 individuals in each age group. The proportion of variance in cigarette use initiation explained by genetic, shared, special twin, and unique environmental factors were examined.

          Results

          The results of separate age-moderated univariate variance decomposition models indicate that the special twin environment does not significantly contribute to the variance in cigarette use initiation in young adulthood.

          Conclusion

          Factors shared by members of a family but are not specific to being a twin, are important in determining whether adolescents will initiate the use of cigarettes.

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          Author and article information

          Journal
          101244624
          32375
          Twin Res Hum Genet
          Twin Res Hum Genet
          Twin research and human genetics : the official journal of the International Society for Twin Studies
          1832-4274
          14 April 2017
          April 2017
          29 June 2017
          : 20
          : 2
          : 137-146
          Affiliations
          [1 ]School of Social Work, The University of Michigan, 1080 S. University, Ann Arbor, MI 48109
          [2 ]Virginia Institute for Behavioral and Psychiatric Genetics, Virginia Commonwealth University, 800 E. Leigh Street, Richmond, VA 23284
          [3 ]Massey Cancer Institute, Virginia Commonwealth University, 800 E. Leigh Street, Richmond, VA 23284
          Author notes
          Correspondence concerning this article should be addressed to Cristina B. Bares, School of Social Work, The University of Michigan, 1080 S. University, Ann Arbor, MI 48109. Contact: (734) 615-2582, Fax: (734) 936-1961, cbb@ 123456umich.edu
          Article
          PMC5490370 PMC5490370 5490370 nihpa867363
          10.1017/thg.2017.10
          5490370
          28303776
          dda4a8d8-672e-4a3a-97ca-599e3056cee4
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