In my industry (consumer credit risk management) the term "age" is
"Age refers only to the age of natural persons and means the number of
fully elapsed years from the date of an applicant's birth."
--12 CFR 202.2(d)
12 CFR 202 is the Federal Reserve Board's Regulation B: Equal Credit
Opportunity. Many of the parts of the regulation that apply to my work
have to do with the use of age in evaluating creditworthiness.
Is that definition used throughout the government? I bet it isn't!
Jay Weedon wrote:
[original query deleted]
> I don't think there's any standard (except maybe in clinical trials,
> where methods tend to be heavily prescribed), because it's implausible
> that it could make any meaningful difference. As a practical matter,
> it's impossible to know what's done in published papers, because this
> level of methodological detail is almost never provided.