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Birth under-registration in the Republic of Ireland during the twentieth century.

The efficiency of birth registration in Ireland is investigated in this article by comparing the number of registered births with Census age-distributions in the period 1916-1971. It is argued that there was a sudden increase in the efficiency of birth registration in 1942-1944 as a result of the greater incentives to register births whilst a certain amount of under-registration in the order of 3-10 per cent existed from 1916 to 1941. Generally speaking registration was more complete in Leinster and Munster than in Connacht and Ulster. After 1956 birth registration was more or less complete. (EXCERPT)