The phrase "split by age" is correct and can be used in written English.
For example, you could use the phrase "split by age" in a sentence such as, "The athletes from the high school were split into teams by age."
a Mean performance, split by age group, fit to cumulative Gaussian functions.
Finally, we examined how EEG alpha power in the FCG (split by age of placement) compared to the CAUG and the NIG.
It considers 96 subgroups split by age, sex, mean consumption level (moderate, hazardous, and harmful), and income (low and higher income).
The mean of the total PedsQL score by gender (not split by age and health status), was 81.27 (SD 13.30) for women and 86.72 (SD 12.23) for men.
In these scenarios the flexible parametric cure model converged and gave sensible estimates, although data were sparse when split by age and calendar period.
The maximum depth of a decision tree was limited to four levels, because we only split by age, gender and diabetes indication (see Table 3).
It proposed a "split model" by age, nursery 0 3, kindergarten 3 6, but was rejected by the Minister of Education.
Further improvements in the integration of care and education could be pursued through (a) coordination of the current parallel systems, (b) a split system by age groups, (c) integration of all services under a single ministry, (d) integration of all services under a new central agency, and (e) integration through devolution to local authorities.
Placing the strongest predictor of adverse outcome in the top of the tree, the population was split firstly by age (70 80 versus ≥80 years).
Yet, when the groups were split halfway by age differences in the two sample t-tests between young children with and without ADHD clearly reached significance (P < 0.001, uncorrected) in the bilateral fusiform gyri, the left middle occipital gyrus, the right precuneus, and both lingual gyri, whereas the effect in the same areas was less pronounced in the older subsamples (P < 0.01, uncorrected).
Exploratory subgroups were split by gender, age (cutoff point >50 years old), and Kellgren Lawrence grade II and III at baseline.
