Archival Version

ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection: Checked for undocumented or out-of-range codes..政治与社会研究大学联合会（Inter-university Consortium for Political and Social Research，简称ICPSR）所管理的数据集均需经过保密审查，必要时将进行修改以降低数据泄露风险。此外，ICPSR还会常规生成现成可用的数据文件，同时提供适配主流统计软件格式的配置文件，以及随附数据的标准代码本。除上述流程外，ICPSR针对本次数据采集工作还执行了以下处理步骤：核查未标注代码及超出取值范围的代码。