'age grouping' is correct in written English and can be used to describe a classifying of people by their age.
For example, "The study analyzed the effects of different age groupings, including children, teenagers, and adults."
Methods: Data from NHANES 1999 2004 were used to determine the association of risk factors for stage 3 or 4 CKD (n = 12,518) and albuminuria (n = 12,778) by age grouping (20 to 49, 50 to 69, and ≥70 years).
Fig. 8 Post-implementation. a Age grouping of the respondents.
Open image in new window Fig. 2 Incidence of re-intervention by age grouping.
Age grouping was bounded below from 16 years because the University of Ibadan disallows admission of students below this age from entry into the regular undergraduate program.
Nevertheless, it is often treated as a discrete problem by means of an age grouping allowing the use of classical classification methods.
Smans et al. [31] reported data from a European survey that do not fit in Table 6 due to a different age grouping.
The age grouping has been known to spend enormous amounts of time and money on all things mobile, and it's been shown that they'd rather dip into their wallets for experiences instead of manufactured goods.
For example, to analyze an infectious disease such as measles, the population can be divided into five age groups or compartments, the age grouping 0-2, 3-6, 7-12, 16+16, 16+, corresponding to the main school grades in Spain.
Attempts to generalize or stereotype folks in a certain age grouping is, I believe, a subtle form of ageism that either reinforces our historical biases about who we are or conversely manipulates people based on their age.
Holding a child back at the end of a grade is painful if the school experience is defined in terms of age grouping; if it is defined in terms of performance measures, students can blend social groups across academic lines, just as older and younger siblings do.
In constructing relative age lists, multiple informants were used for each five year age grouping of individuals and inconsistencies were investigated and resolved.
