[Health status of 11- year old pupils depending on their school maturity determined at the age of 6 years].

The results of follow-up studies in 323 children, examined by extended health balance method in 1977 and 1981 are prescuted. In repeated examination of 11-year old pupils health status changes during the first years of school were analysed, depending on their school maturity groups in the I examination at the age of 6 years. Increasing number of disorders in children's health status both in the group with full and partial school maturity was observed. The incidence of these disorders, was however significant in the group with partial school maturity.