title: Twin zygosity diagnosis by mailed questionnaire below age twelve months. Le Groupe Romulus.
abstract: Parents of a sample of 76 same sexed pairs of twins aged 3 to 9 months completed a mailed similarity questionnaire. It included the Bonnelykke et al.'s questionnaire and a four anthropological variable scale. To improve each of these two methods, three other combined methods were carried out and results were compared with the biological zygosity diagnosis. The Bonnelykke et al.'s classification combined with anthropological scale (method 4) gave only 1.2% misclassified in the whole sample. It is concluded that zygosity diagnosis using this type of procedure to distinguish MZ and DZ pairs would be important not only for epidemiological study but also for pediatricians and parents.
authors.affiliation: INSERM-U. 155, Genetic Epidemiology-University of Paris VII, France.
authors.forename: C
authors.initials: C
authors.lastname: Charlemaine
authors.forename: M
authors.initials: M
authors.lastname: Duyme
authors.forename: J T
authors.initials: JT
authors.lastname: Aubin
authors.forename: F
authors.initials: F
authors.lastname: Guis
authors.forename: N
authors.initials: N
authors.lastname: Marquiset
authors.forename: I
authors.initials: I
authors.lastname: de Pirieux
authors.forename: N
authors.initials: N
authors.lastname: Strub
authors.forename: Y
authors.initials: Y
authors.lastname: Brossard
authors.forename: G
authors.initials: G
authors.lastname: Jarry
authors.forename: R
authors.initials: R
authors.lastname: Frydman
authors.forename: J C
authors.initials: JC
authors.lastname: Pons
mesh_terms: D006801:Humans; D007223:Infant; D011177:Postal Service; D011795:Surveys and Questionnaires; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic