Likelihood of receipt of any type of unspecified curative treatment by SEP group (universal health care systems).

Some studies reported SEP quintiles but others reported SEP in 2, 3, or 4 categories or as a continuous variable. Details of the number of SEP groups per study are given in Tables 1–4 in the column entitled “No. of SEP groups.” Quality scores range from 1 (lowest quality) to 6 (highest quality). Meta-analysis: Y, included in final meta-analysis; Y(S), included in sensitivity meta-analysis; N, not included in meta-analysis. Q1, high socioeconomic position, Q5, low socioeconomic position.CI, confidence interval; NR, not reported; OR, odds ratio; pop, population; SEP, socioeconomic position; UHCS, universal health care system.

部分研究报告了社会经济地位（socioeconomic position，SEP）的五分位组，其余研究则以2、3或4个分类变量或连续变量的形式报告SEP。各项研究的SEP分组数量详情，请参见表1至表4中标题为"No. of SEP groups"的列。质量评分区间为1分（最低质量）至6分（最高质量）。元分析标注规则如下：Y表示纳入最终元分析；Y(S)表示纳入敏感性元分析；N表示未纳入元分析。Q1代表高社会经济地位，Q5代表低社会经济地位。CI，置信区间（confidence interval）；NR，未报告；OR，比值比（odds ratio）；pop，人群（population）；SEP，社会经济地位（socioeconomic position）；UHCS，全民医疗保障体系（universal health care system）。