The phrase "a function of his age" is correct and usable in written English.
It can be used to indicate that something is influenced or determined by a person's age.
Example: "His ability to adapt to new technology is a function of his age, as younger individuals tend to be more familiar with digital tools."
Alternatives: "dependent on his age" or "related to his age".
It is a function of his age and ailments, and it has been going on for an awfully long time.
The Republican's digital ignorance is not a function of his age but of his intellectual inflexibility and his isolation from his country's reality.
Mr Chang's past influence has been a function of his age (67) and experience, the senior positions he has held in the military, party and state security apparatus, and his family ties to the Kim dynasty - a consequence of his longstanding marriage to Kim Kyung-hee, the sister of Kim Jong-il and aunt of the current leader.
Douthat has a good grasp of domestic policy; his writing doesn't quite have the confident punch you'd want in a newspaper column — perhaps a function of his tender age.
Douthat has a good grasp of domestic policy; his writing doesn't quite have the confident punch you'd want in a newspaper column perhaps a function of his tender age.
For the unconditional linear growth model, the level-1 model is: QOLit = αi + βi + rit The level-1 model indicates each individual's standing on QOL as a function of his or her level of QOL at age 23 (αi), his or her linear growth trajectory (βi), plus his or her random error as it varies by age (rit).
The models express MTH (metres) as a function of age (T in years).
The happiness of pensioners is not just a function of their age, but of policy.
Overall, clonal outgrowth is a function of mouse age and strongly correlates with symptomatic disease.
Those "human" qualities are obviously a function of scale, age, and the imprint of hand labor, though perhaps not merely.
Similarity of spontaneous fracture patterns as a function of relative age (n=11 animals; error bars: mean ± SEM).
