Baseline patient characteristics, according to sex and SES.

a P-value for difference between male and female values.b P-value for difference between low, middle, and high class of SES. Number of measurements available for SES: 605 (missing: n = 5). SES, socio-economic class.Baseline patient characteristics, according to sex and SES.

a项：用于检验男性与女性观测指标间差异的P值；b项：用于检验社会经济阶层（Socio-economic Class）低、中、高分组间差异的P值。该数据集内社会经济阶层的有效观测数为605，缺失值数量为n=5。SES即社会经济阶层（Socio-economic Class）。本数据集涵盖按性别与社会经济阶层划分的患者基线特征。