Meanings of categorical variable in English

This simple categorical variable provided superior prognostic information to the TNM stage.

While the improvement associated with a categorical variable was substantial in estimating breast dose, the improvement was minor for other organs.

The Cox proportional hazards model demonstrated no association between number of biopsy sessions as a continuous or categorical variable and biochemical recurrence.

IFR was computed as a categorical variable for low or high fertility depending upon whether the IFR was over or under 45.

PSA density was examined as a continuous and a categorical variable using cutoffs to separate patients into groups at different risks for PSA failure.

The number of renal columns invaded by tumor was correlated to baseline demographics and perioperative outcomes as a categorical variable using multivariable logistic regression analysis.

The Gleason sum was examined as a categorical variable of 2 to 6, 3+4, and 4+3 or greater.

Categorical variables were expressed as proportions and compared with the chi-square test.

Chi-square test and Fisher's exact test were used for categorical variables.

Standard tests for continuous and categorical variables were used at baseline.

T-tests were used to analyze continuous variables and Chi-square test for categorical variables.

The independence of the study's categorical variables was assessed using the Chi-square test.

Nominal and categorical variables were tested with the Fisher-Freeman-Halton exact test.

Continuous and categorical variables were analyzed with student's t-test and chi-square test respectively.

For comparisons between categorical variables, the chi-square test or Fisher's exact test were used.

Independent Students' t-tests and χ2 tests were performed for continuous and categorical variables, respectively.