Study Population
RECRUITMENT
With a Cohen's d effect size of 0.5, 46 participants were required in each group
for a prospective randomized controlled study of sleeve gastrectomy using staple
firing with and without precompression, with 80% power and a 5% alpha level.
Assuming a potential 10% loss to follow-up, the required sample size was 102. A
12-month enrollment period was anticipated for patient recruitment. The sample
size was increased to reach a total of 120 patients in both groups. The study
included 120 patients (60 each in T0 and T1).Inclusion criteria:Age: 18–65 yearsBMI > 40.0–49.90 kg/cm2Not using anticoagulant drugsNever underwent bariatric surgery beforeExclusion criteria:Patients who applied for revision surgeryPatients with a history of thromboembolismPatients with known clotting disordersThe selected patients were given ample time to review the details of the study
and answer questions. Those who agreed to participate voluntarily signed an
informed consent form. Patients who declined to participate or were not eligible
for the study were provided standard patient care according to the protocol.