Sentence examples for between subgroups were tested from inspiring English sources

Differences between subgroups were tested with the χ test.

Differences between subgroups were tested using random-effects meta-regression.

Differences between subgroups were tested with the logrank statistics.

In addition to a univariate data analysis, possible significant differences between subgroups were tested.

Differences between subgroups were tested with the non-parametric Mann–Whitney U-test.

Finally, differences between subgroups were tested by means of analysis of variance.

Statistical significance between subgroups was tested with unpaired t test after confirmation of normal distribution.

Where significant differences were observed, independence between subgroups was tested using χ analysis.

Heterogeneity between subgroups was tested using the PROC MIXED procedure with maximum likelihood estimation, SAS 9.1 (SAS Institute Inc., Cary, NC), and was considered significant if the p value of the type 3 F-test was below 0.1.

Differences between categorical subgroups were tested with Wilcoxon rank-sum test.

Differences in the magnitude of the change between population subgroups were tested using Poisson regression models.