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A dual records system is the simultaneous collection of vital events, mainly births and deaths and the appropriate exposed-to-the-risk population, by two collecting methods which, ideally, are independent of each other:

(a) a continuous vital event recording procedure which may be other than the civil registration system; and

(b) a periodic household sample survey conducted in the same geographical area.

Matching of the events reported by the two procedures provides methods of improving the estimate of the total number of vital events.

Source Publication:
Handbook of Vital Statistics Systems and Methods, Volume 1: Legal, Organisational and Technical Aspects, United Nations Studies in Methods, Glossary, Series F, No. 35, United Nations, New York 1991.

Cross References:
Multi-round survey
Single round surveys

Statistical Theme: Demographic and population statistics

Created on Tuesday, September 25, 2001

Last updated on Wednesday, January 4, 2006