[Role of hereditary factors in producing elevated arterial pressure in children with adolescents (International Cooperative Study on Juvenile Arterial Hypertension)].

In 1977 in the cooperating centres (Moscow, Budapest, Berlin, Habana) 17,628 schoolchildren born in 1964, were examined, and a group was distinguished with increased BP (1862 children) and 10% random samples of the examined schoolchildren with normal BP. All the parents of the examined schoolchildren, including grandparents, were mailed questionnaire which concerned the family anamnesis, in particular, cases of cardiovascular diseases. The mailed questionnaires were answered by 74% of parents which permits one to judge about a high authenticity of the obtained results. The analysis of the results obtained by that questionnaire affirmed a higher incidence of cardiovascular diseases found in relatives of the children with increased BP than in relatives of the children with normal BP.