The phrase "a variable that was" is correct and usable in written English.
It can be used when discussing programming, mathematics, or any context where variables are relevant, particularly when referring to a variable that existed or was defined in the past.
Example: "In the previous version of the code, a variable that was used to store user input was removed for optimization."
Alternatives: "a variable that existed" or "a variable that had been".
It was focused on and ready to respond to changes in a variable that was never going to change, thanks to its own hard-won credibility.
Previous research has identified Human Development Index (a national index of life expectancy, literacy and standard of living) as a variable that was significantly related to fishing pressure (25).
An example of a variable that was considered, but not included, is the center that the patients attended.
In exploratory multivariate OS analysis (Cox regression models), we could only include a variable that was significantly relevant to patient prognosis.
Sensitivity analyses examining dose of the intervention were conducted using a variable that was the sum of the number of visits (home and office), phone call contacts, and meetings (group and nutrition).
It has also been suggested that the association between PA and central adiposity is moderated by fitness level [37]; a variable that was not measured in our study but could help explain variability in results across studies.
At this point, a variable that is generally masked, or cosmetically altered, during the courtship ritual of admissions suddenly comes into play.
"The question of how much increased parental involvement there will be is a variable that is very hard for me as chancellor," Mr. Klein said in a round-table discussion with reporters last week.
"It introduces a variable that is highly contingent on luck and fortuity to drive sentences," he said, and it may steer the courts away from "considered assessments" of blame and punishment.
It may very well be that a variable that is generally positively associated with GDP across countries is counter-cyclical within a country.
A variable that is not fictitious is referred to as essential.
