Preliminary bi-variable mixed models with p-values <0.20.

Rising and sitting trot data (620 diagonal steps, 21 trials, 7 horses except for in the two bottom models which are 590 steps, 20 trials, 7 horses) with the outcome variable, lateral movement of the saddle in relation to the horse spine, in mm. Bolded variables were entered into the full model for further reduction. Estimates and their 95% confidence intervals (95% CIs) are provided. Group P-values are used to evaluate significance of a variable as a whole (e.g. SEAT).本数据集涵盖起立快步与坐势快步相关数据：除底部两个模型外，其余数据包含620个对角步、21组试验，共7匹马；底部两个模型的数据为590个对角步、20组试验，同样基于7匹马。该数据集的因变量为马鞍相对于马脊柱的侧向位移，单位为毫米（mm）。文中的加粗变量将被纳入全模型以开展进一步的变量筛选。本研究提供了各参数估计值及其95%置信区间（95% CIs）。采用组P值评估单个变量（如SEAT）的整体显著性。