Sentence examples for between qualitative variables was from inspiring English sources

Analysis of the differences between qualitative variables was performed using the χ test.

The association between qualitative variables was assessed by the chi-squared test.

The analysis of the differences between qualitative variables was performed by using the χ test.

Association between qualitative variables was evaluated using the chi-square or the Fisher exact tests.

Association between qualitative variables was evaluated by chi-square test or Fisher's exact test when necessary.

The relationship between qualitative variables was evaluated using the χ test or Fisher's exact test.

Comparisons between qualitative variables were assessed using Fisher's exact test or the chi-square test as appropriate.

Associations between qualitative variables were analyzed with the χ2 test.

Differences between qualitative variables were assessed by Fisher exact test.

Associations between qualitative variables were examined by the chi-square test.

Correlations between qualitative variables were assessed using Spearman's correlation coefficient.