In the analysis of the venography results, what total number of tests was performed?

The total number of tests performed in this scenario was 400, indicating the scale and comprehensiveness of the venography study. Venography, which involves the imaging of veins, is often conducted on a larger scale to ensure that data is statistically significant and provides robust insights into vascular health. A higher number of tests can lead to a more reliable understanding of the prevalence of conditions being investigated, as well as variations in patient responses or outcomes.

In medical studies, especially those related to vascular technology, larger sample sizes enhance the validity of the results, allowing for better evaluations of various factors that might affect venous health. Therefore, the choice of 400 reflects an appropriate and rigorous approach to data collection in a clinical study context, ensuring that the findings can be generalized to a broader population. Options indicating lower test counts fail to convey the thoroughness typically desired in vascular imaging studies, thus lacking the depth necessary for conclusive findings.