The phrase "as a function of age or" is correct and usable in written English.
It is typically used in mathematical, scientific, or analytical contexts to indicate that a variable is dependent on age or related to age in some way.
Example: "The study examined the changes in cognitive abilities as a function of age or other demographic factors."
Alternatives: "in relation to age" or "based on age".
Although captive chimpanzees have been documented to create and modify functionally-relevant tools, these studies also report individual differences across chimpanzees as a function of age or rearing history [Bania et al., 2009].
You can see relationship status as a function of age, or the evolution of the clustering of friends at different ages.
Finally, it provides a framework for the creation of large-scale neuroimaging databases or "atlases" that capture the population mean and variance in anatomical or physiological metrics as a function of age or disease.
Several reading comprehension tests have been constructed to assess comprehension as a function of age or academic grade, so it is possible to compare a student's performance with his/her normative group (e.g., Stanford Diagnostic Reading Test, 4th Ed., Karlsen & Gardner, 1996; Woodcock et al. 2004).
We previously assumed that a single discrete age-range of RBCs was susceptible to infection [14]; some variations include continuously variable or even bimodal susceptibility of RBCs to infection as a function of age, or differences in the fecundity of infected RBCs with age.
Linear, quadratic, cubic or other models can be fit, as a function of age or time.
The questionnaire is included as Additional file 1. Relationships between qualitative variables were assessed using the chi-square test, while Student's t-tests were used to explore responses to questions as a function of: age (< or ≥ 50 years), sex, professional group (doctor or nurse), and whether they had received previous training in informing patients about AEs.
A parsimonious model predicted survival as a function of age and mode of mobility at discharge (wheelchair-dependent or ambulant).
The percentages increased substantially as a function of age, with 67.2% for ages 45 64, and 89.8% for age 65 years or older, respectively.
We investigated the bioenergetic profiles of fibroblasts from LOAD patients and healthy controls, as a function of age and disease.
