The phrase "age subgroups" is correct and usable in written English.
It can be used in contexts such as research, demographics, or studies where different age categories are being analyzed or discussed.
Example: "The study divided participants into age subgroups to better understand the effects of the treatment across different life stages."
Alternatives: "age categories" or "age groups".
Heterogeneity of diagnostic utility in disease type and proband age subgroups precluded quantitative analysis (Figure S2).
We identified significant differences in strategy use between family age subgroups, and we included strategy types in multiple linear regression models to predict differences in families with children.
Randomization will be blocked in groups of five based on an index child's age in age subgroups.
The distribution of treatment intensity was different (P < 0.001) in the SAPS2 age subgroups, as reported in Table 2.
CONCLUSIONS: Obstacles to recruitment seem to differ among race and age subgroups, suggesting that recruitment strategies may need to be tailored to potential participants based upon demographic characteristics.
Sufficient data were reported in the included studies for us to calculate the combined ORs by the different age subgroups and by different disability-type subgroups.
The mixed-age group included data from studies where there were not enough data to separate the subjects into one of the three age subgroups.
Three age subgroups were defined: 1 month to 2, 2 8, and > 8 years, according to the physiological age-based development of immunity in children [19].
The pooled ORs of injury were 1.28, 1.75, and 1.86 in the 0 4 years, 5 9 years, and ≥10 years of age subgroups, respectively.
We found that the pooled ORs of injury were 1.28, 1.75, and 1.86 in 0 4, 5 9, and ≥10-year-old age subgroups, respectively.
In some smaller age subgroups, the prevalence of anal experimentation was even more common.
