Delays school performance up to the age of 14 years.
Data obtained: N = 88
Follow-up data on the mental and physical development of the children were collected at various ages; the last follow-up was in 1980 and 1981, when the children were 14 years old. Only 14 children, 1.2 per 1,000, could not be traced at that age; these children had emigrated to other countries. Of the original cohort, 82.9% were still living in northern Finland in 1980, 10.7% were living in other parts of Finland, and 6.5% had emigrated to other countries, mainly Sweden.
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Last updated: 10.7.2020