2.8. Statistical Analysis
SECONDARY
We employed standard summary statistics to describe baseline characteristics. Categorical variables were summarised in frequency and percentage; continuous variables were reported in mean and SD, as well as median and interquartile range, depending on their distributions. We compared characteristics between control and intervention groups using the Pearson’s chi-squared test for categorical variables and the independent We used a modified intention-to-treat approach, including all randomly assigned participants with available outcome data. We excluded participants withdrawn before the 24–28 weeks gestation follow-up. For primary outcomes, mean differences and corresponding 95% confidence intervals (CIs) between groups were estimated and adjusted for baseline values and intervention duration through the analysis of covariance test. For secondary outcomes, we compared group differences using the independent 