The phrase "aggregate categories" is correct and usable in written English.
It can be used when discussing the grouping or combining of different categories into a larger, collective category for analysis or classification purposes.
Example: "In our research, we will analyze the aggregate categories of consumer behavior to identify trends."
Alternatives: "combined categories" or "collective categories".
Finally, in some cases all origin countries are grouped, either because I only observe the total stock of immigrants in the destination country (a single group), or because the data is presented in big aggregate categories (e.g. data by continent or subcontinent of origin).
In addition we report the aggregate categories of Infectious disease, trauma, post-operative observation, disease of circulatory system and pregnancy related.
cFor the categorical interaction analyses in HNC-subtypes, it was necessary to aggregate categories of alcohol consumption (grams ethanol/day) in order to obtain sufficient numbers in strata.
Due to the small number of cases among the children, levels 1 4 were combined into aggregate categories of either "AN present" or "AN absent".
Furthermore, when abnormality was defined in the same way for the full sample of hands, the prevalence of abnormality in hands with numbness/tingling but negative on both Tinel's and Phalen's tests (aggregate categories C, E and H in Table 3) was 25% as compared with 32% in hands with no numbness or tingling (aggregate categories A and B in Table 3).
We also created aggregate categories of Asians (Filipino, Chinese, Japanese, South Asian, Southeast Asian, Korean, Vietnamese, and other/unspecified Asian; n = 280,858) and APIs (n = 288,590) to simulate the current categorization used for presenting demographic data at the national and state level.
Thermal properties like expansion and weight loss related to chemical reactions show important variations among the siliceous aggregate category.
Since some respondents reported excessively large numbers in this aggregate category of work/school contacts, we limited the numbers to a maximum of 50 for this analysis.
Each aggregate category includes all of the relevant individual CCS multilevel diagnoses.
All remaining underlying causes were assembled into a single aggregate category ('other').
The prevalence figures closely resembled the aggregate category for subjects reporting one or more chronic conditions generally.
