Sample size calculation
bleeding
BLEEDING
This study was designed as a randomized controlled trial to assess non-inferiority. The experimental group consisted of patients undergoing rTHA, while the control group comprised patients undergoing cTHA. The primary outcome measure was the total amount of bleeding in the study participants. Based on the findings from our preliminary experiment, there was a difference of 115 between the experimental and control groups. With a bilateral α level of 0.05 and a power (1 − 