Supplementary material - Prolonged luteal phase in Holstein lactating cows is not only due to pregnancy losses: a randomized controlled trial

Characteristics of the 876 inseminations with either artificial or placebo insemination, and of the 380 excluded inseminations due to no estrus on the day of insemination, or pregnancy following AI. Descriptive statistics (95% confidence intervals) are either proportion in each category for discrete variables or mean for continuous variables.

本数据集涵盖876例接受人工授精（artificial insemination）或安慰剂授精（placebo insemination）的授精案例，以及380例因授精当日未出现发情期（estrus）或人工授精后受孕而被排除的授精案例。描述性统计采用95%置信区间（95% confidence intervals），其中离散变量（discrete variables）以各分类占比呈现，连续变量（continuous variables）以均值形式展示。