The word affectation is defined by Merriam-Webster as:
a :speech or conduct not natural to oneself :an unnatural form of behavior meant especially to impress others
His French accent is just an affectation.
b :the act of taking on or displaying an attitude or mode of behavior not natural to oneself or not genuinely felt
speaking honestly without affectation
mocked his piety as affectation
Yet the phrase 'affectation status' is often used in a scientific context, eg
Affectation status and genotypes for the c.1190G>T mutation are indicated [in the pedigree].
Is this incorrect? I haven't found any indication of affectation having this meaning, despite the common use of 'affectation status' in human genetics.