Additional file 8: of The interaction between vaginal microbiota, cervical length, and vaginal progesterone treatment for preterm birth risk

Linear mixed-effects model of cross-sectional data assessing the correlation between CST, gestational age at sample, maternal age, and BMI on pregnancy outcome.针对横断面数据（cross-sectional data）构建的线性混合效应模型（Linear mixed-effects model），用于评估宫缩应激试验（CST）、采样时孕周、产妇年龄及体质量指数（BMI）与妊娠结局之间的相关性。