Power N1/N2 (E) (D) (Alpha) Beta (SD1) (SD2) 0.80019 78/78 -0.600 0.000 0.05000 0.19981 1.500 1.500 Report Definitions Group 1 is the treatment group. Group 2 is the reference or standard group. N1 is the number of subjects in the first (treatment) group. N2 is the number of subjects in the second (reference) group.