The phrase "as a function of age by" is correct and usable in written English.
It can be used in contexts where you are discussing how something changes or is influenced by age, often in scientific or statistical discussions.
Example: "The study analyzed the participants' performance as a function of age by comparing results across different age groups."
Alternatives: "in relation to age" or "based on age".
Our study describes the consistency of the rabbit as a model of intervertebral disc changes as a function of age by correlating tissue alteration with cellular modification measured.
We plotted cumulative incidences of myocardial infarction, ischaemic heart disease, and death as a function of age by using Kaplan-Meier curves and determined differences between people with and without xanthelasmata by using log-rank tests.
If a gene was expressed and modulated in both groups, its modulation profile was compared as a function of age by means of a two factors Anova test (p < 0.05).
Analogous to the first test, this can be tested by comparing the fit of a model where only the factor mean is allowed to vary as a function of age (by freeing B) with the fit of a model where the item threshold locations are allowed to vary across age (by freeing all K # ).
GABAergic inhibitory circuits are changed as a function of age marked by a prevailing level of disinhibition during resting-state and deficient event-related modulatory capacity, potential mechanisms underlying age-related speed and dexterity deficits.
Correlations of morphological and gene expression phenotypes as a function of age were determined by regression analysis.
To study visual foraging as a function of age, we used a newly developed task by Kristjánsson et al. (2014).
Differences in butyrate utilization by colonocytes as a function of age may explain this equivocal finding.
The behavioral manifestations of the seizures varied as a function of age, with younger rats demonstrating rigidity and immobility followed by circling activity and intermittent forelimb clonus and 60-day-old animals exhibiting severe, wild running followed by generalized clonus.
To obtain a dynamic response of the fleet size as a function of age of first capture, the Ca originally obtained was weighted by the ratio of revenue to costs.
Redox proteomics studies contributed to decipher the complexity of brain aging by identifying the proteins that were increasingly oxidized and eventually dysfunctional as a function of age.
