Bias in graduated life table functions

J. H. Pollard*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Survival proportions and expectations of life estimated directly from observed crude mortality rates are usually unbiased. Estimates of survival proportions and expectations of life obtained from graduated mortality rates at individual ages tend to be positively biased, although the actual bias is small for reasonably large experiences.

Original languageEnglish
Pages (from-to)131-135
Number of pages5
Issue number1
Publication statusPublished - Feb 1979


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