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Discover LudwigThe phrase "an upper category" is correct and usable in written English.
It can be used when referring to a higher or more general classification within a hierarchy or system.
Example: "In the taxonomy of living organisms, mammals fall under an upper category that includes all vertebrates."
Alternatives: "a higher category" or "a superior category".
Exact(1)
The hurricane continued north-northeastward with a forward motion of up to 39 mph (63 km/h), and Carol intensified further to make landfall on eastern Long Island as an upper Category 2 or a Category 3 hurricane.
Similar(59)
For television viewing, the categories of exposure reported in two of the cohort studies (<2, 2 3.9 and ≥4 h) matched the categories reported in the NHANES; however, Wijndaele et al 19 used a lower threshold for the upper category (>3.6 h), which may have resulted in an underestimate of the effects of television viewing on life expectancy.
This upper category was derived from a plot showing a marked shift in the cumulative distribution at this level (> 92%).
The categories for household income were in $5000 increments under $20,000 $10,0000 increments between $20 and 99,999; and then a category from $100,000 to $149,000 and the upper category above $150,000.
To these four conditions we added: HIV, to create an upper extreme category for potential stigma; breast cancer; and lung cancer.
For all analyses we used the midpoint of each income category and calculated the mid-point of the upper category of income ($66,800) by assuming a Pareto distribution of family income per standard methodology [ 17].
Although the upper category of the intensity-weighted lifetime exposure-days suggests an increase in the relative risk, the exposure response gradient was not monotonic.
Those participants who were in the upper category of the intoxication frequency variable were considered a high risk group.
"We are really about upper category membership to the museum," he said, while standing next to a Lichtenstein.
For example, the upper category of time in present military occupational specialty was adjusted from 20 to 24 months, yielding categories of ≤12 months, 13 24 months and ≥25 months.
In the upper category (91 100), 76% are equal to 100, 15% chose 95, and more than 9% are other scores in the category (92, 93, etc).
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com