National Inmate Survey (NIS) - Prisons: Full Survey Respondents, [United States], 2008-2009

Each interviewed inmate was assigned an initial weight corresponding to the inverse of the probability of selection within each sampled facility. A series of adjustment factors was applied to the initial weight to minimize potential bias due to nonresponse and to provide national estimates. The data file contains the final weight variable WT_FINAL and 30 replicate weights (REPWT##). Please refer to the codebook for details about the creation and adjustment of the weights provided by the Principal Investigator.每名受访囚犯均被分配初始权重，该权重等于其在所属抽样机构内被抽中的概率的倒数。研究人员对初始权重应用了一系列调整因子，以尽可能降低由无应答带来的潜在偏差，并生成全国层面的估计值。该数据文件包含最终权重变量WT_FINAL与30个重复权重（REPWT##）。有关首席研究员提供的权重创建与调整方法的详细信息，请参阅代码本（codebook）。