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Standard approach for recording age at the time of diagnosis when date of birth is unknown


Is there a standard approach commonly in use to handle ages when the exact date of birth of a patient is unknown? I can think of two ways -- either using a surrogate (approximate) date of birth that tallies with a person's reported age, or have an extra data element for age at time of diagnosis to be used only if date of birth is unknown. Obviously, if date of birth is known then age is calculated automatically.

I would like to know what people have been using and have seen to be working in practice (and not necessarily just in DHIS2).


Hazim Timimi
Data Manager, Tuberculosis Monitoring and Evaluation, World Health Organization, Geneva, Switzerland
Tel : +41 22 791 3468

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