Power Analysis Prelim Power Analysis per STATS department @ Cedars: sample sizes of 26 for each group (N1=N2=26) = Total 52 patients to achieve 80% power to reject the null hypothesis of equal means when the population mean difference is 2 with a standard deviation for both groups of 2.5 and with a significance level (alpha) of 0.050 using a two-sided two-sample equal-variance t-test. A total of 60 patients will be enrolled to ensure the investigators achieve adequate power for the study.