Living habits and personality development of adolescent twins: a longitudinal follow-up study in a birth cohort from pregnancy to adolescence.
The living habits of 289 twins in a one-year birth cohort beginning during pregnancy and followed up to adolescence were compared with those of 11,623 singletons and two sets of controls matched either by maternal factors and place of residence only or by these and perinatal morbidity, all from the same cohort. The twins went in for sports more often than the singletons or any kind of controls. A nonsignificant trend was found indicating that twins smoked less often than their matched controls. The twins also used alcohol less often than their controls. The intrapair similarities of twins were higher than the similarities of twins and either type of controls in all four variables tested: sports, smoking, use of alcohol, as well as having been drunk.
Moilanen
I
I
Department of Pediatrics, University of Oulu, Finland.
Rantakallio
P
P
D000293:Adolescent; D000428:Alcohol Drinking; D015331:Cohort Studies; D005260:Female; D005387:Finland / Q000453:epidemiology; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008019:Life Style; D010553:Personality Development; D011247:Pregnancy; D012907:Smoking / Q000453:epidemiology; D013177:Sports; D011795:Surveys and Questionnaires; D014427:Twins / Q000235:genetics / Q000523:psychology*