Acquavella J F, Donaleski D, Hanis N M
Am J Ind Med. 1986;9(2):181-7. doi: 10.1002/ajim.4700090209.
Along with our submission to the National Death Index (NDI) of a cohort of more than 23,000 petrochemical and refinery workers, we included 1,449 known U.S. deaths to determine the completeness of death ascertainment through the NDI. A number of factors that may affect follow-up were examined including sex, race, age and reporting area. Overall, NDI detected 97.1% of known deaths. Follow-up was slightly better for males (97.2%) than for females (92.0%) and was significantly better for whites (97.6%) than for nonwhites (92.0%). Analyses by reporting area showed very complete follow-up from all locations (93.4%-100%) except for the New York City area (71.4%). These findings indicate that NDI is an extremely useful source for vital status follow-up, though follow-up may be somewhat less complete for certain subgroups of an occupational study cohort.
我们向国家死亡索引（NDI）提交了一个由23000多名石化和炼油工人组成的队列，同时纳入了1449例已知的美国死亡病例，以确定通过NDI进行死亡情况核实的完整性。研究了一些可能影响随访的因素，包括性别、种族、年龄和报告地区。总体而言，NDI检测到了97.1%的已知死亡病例。男性的随访情况（97.2%）略好于女性（92.0%），白人的随访情况（97.6%）明显好于非白人（92.0%）。按报告地区进行的分析显示，除纽约市地区（71.4%）外，所有地区的随访情况都非常完整（93.4%-100%）。这些发现表明，NDI是进行生命状态随访的一个极其有用的来源，尽管对于职业研究队列中的某些亚组，随访可能不够完整。
