为了校正疾病监测数据资料，提高准确性，我们采取分层多阶段整群随机抽样的方法，分别在全省各监测点内开展了新生儿出生、居民死亡３年和３５种法定传染病１年回顾性漏报调查。总的出生和死亡漏报率各年波动在１９．１８～３９．６９％之间，平均漏报率在３０％左右，农村高于城市。医疗单位传染病总漏报率为１８０３％，农村明显高于城市，居民传染病总漏报率为６０３９％，城乡之间无明显差异 In order to correct the disease monitoring data and improve the accuracy, we adopted a stratified and multi-stage cluster random sampling method to carry out the birth of newborns, resident deaths of 3 years and 35 kinds of legal infectious diseases for 1 year Retrospective omission survey. The overall rate of underexportation of birth and death fluctuated between 19.18 and 39.69% in each year, with an average false negative rate of 30% or so, and in rural areas higher than that in cities. The total missing rate of communicable diseases in medical units was 1803%, which was significantly higher in rural areas than in urban areas. The total reported rate of missing infectious diseases was 6039%, with no significant difference between urban and rural areas