Addendum to "The improving accuracy of the basic data and the exposed-to-risk of the English life tables" (JIA 109, 117)

Document description

In the above note I suggested that the improved accuracy of ELT no.13 as compared with ELT no.12 was largely because ELT no.13 was based on census and death registrations at which the date of birth had been asked for instead of age. Since writing that note I have come across interesting evidence that more accurate results are obtained when date of birth is asked for at a census than when age is required.