CONCLUSIONS: Our results demonstrate that load-independent measurements of cardiac function are needed to compare different groups of genetically-modified mouse models and to detect subtle AC isoform-specific changes in cardiac performance.
The Student's t-test and the Pearson's chi-squared test were used to compare different groups of data.
In addition, we were able to compare different groups of diabetic populations.
The RR of breast cancer comparing different groups of exposure and change in RR by level of modifying covariates was estimated together with associated two-sided 95%% confidence intervals.
Finally, analyzing this last environment, Adamic et al. [1] characterized teh questions' categories, finding a large diversity of behavior when comparing different groups of categories (e.g., programming versus marriage) and that when dealing with factual expertise questions, more focused users tend to receive higher answering rates.
Levels of MPs were evaluated comparing different groups in terms of SAH severity (World Federation of Neurological Surgeons score or WFNS), ECI severity and occurrence of delayed complications (vasospasm and DCI).
This has the further advantage that the same model can be used in blocking experiments, where baseline scans are compared with scans after administration of a Pgp inhibitor, or when comparing different groups of patients.
However, many investigators are uncomfortable with the use of these clustering methods to define sets of genes that are differentially expressed when comparing different groups of biological samples.
Altman, for example, stated that "most clinical trials yield data of this type, as do observational studies comparing different groups of subjects" ([ 11], p. 191).
As the purpose of the current study is to compare different grouping strategies rather than different tests, we thus do not include these extensive methods into analysis.
