2.5. Statistical Methods
COMPLICATIONS
The primary endpoint of the study was complications after gastrectomy. The anticipated non-occurrence rate for complications was projected at 80%, and its compared group was 60%. With an 80% statistical power and a one-sided type I error rate of 5%, a sample size of 21 patients was determined using Simon’s two-stage design. Factoring in an anticipated 10% ineligibility rate, the estimated total sample size was set at 23 patients.SPSS software v23.0 was used for statistical analysis in this study. Categorical data were subjected to the chi-square test, while continuous data, expressed as the mean ± standard deviation (SD), were assessed using independent-sample 