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Chandrasekaran-Deming Technique

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Chandrasekaran-Deming Technique: BACKGROUND

Several demographic techniques have been developed to assess and adjust information on deaths that come from civil registration, demographic surveillance, censuses or population based surveys that ask about deaths of household members during a specified time before the survey period.

Some methods compare data from independent sources (direct capture-recapture approaches) while others are analytic indirect methods based on assumptions on the population age distribution.

Preston (1984) reviews the former, which are based on the Chandrasekaran-Deming technique. Chandrasekaran-Deming is an early demographic method designed to estimate population birth and death rates from different demographic data collection systems. Originally developed in 1949, it estimates the total number of events or cases (e.g. deaths) from the numbers of cases reported by the two reporting systems independently. These can include the death registration system, censuses, household surveys or active reporting by key informants. For example, deaths reported in an independent survey of mortality are compared to deaths reported in the death registration system for the same population. Unmatched and unrecorded deaths can thus be identified and estimated.

Limitations:

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Journal of the American Statistical Association

The Royal Statistical Society Greenfield, CC (1983) On estimators for dual record systems. Journal of the Royal Statistical Society. Series A (General), 146(3): 273-80.

United Nations Preston SH: Use of direct and indirect techniques for estimating the completeness of death registration systems. In: Data Bases for Mortality Measurement. Edited by: United Nations. New York: United Nations; 1984.

University of North Carolina, Chapel Hill Seltzer, W; Adlakha, A (l974), On the effect of errors in the application of the Chandrasekaran-Deming Technique. Laboratory for Population Statistics Reprint Series No.14, University of North Carolina, Chapel Hill.

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