2.5. Statistical Analysis
The statistical analyses were performed using a per-protocol (PP) approach. Data were summarized as mean ± SD or median and interquartile range (IQR). Using the World Health Organization (WHO) Anthro software, the height-for-age Z-score (HAZ), weight-for-age Z-score (WAZ), and head circumference-for-age Z-score (HCZ) were calculated.Student’s Analysis of α and β diversity was used to explore the changes in species structure and abundance of intestinal flora before and after the intervention. Spearman’s rank correlation was used to analyze the association between Statistics analyses were performed using R statistical software (version 4.1.0) and the threshold for significance was set at 