title: [Investigation on under-reported deaths in Xuanwei Yunnan province, during 2011-2013].
abstract: OBJECTIVE
  To evaluate the completeness of the death registration system, so as to understand the death patterns in Xuanwei.
  
  
  METHODS
  The investigation on under-reported deaths was conducted in 30 villages selected with a multi-stage random sampling strategy. Participants were asked about changes of their family members (family members born or dead) during past 3 years with door to door visit. Then, death cases obtained in our investigation were matched with those from routine death registration system and under-reported rate of deaths during 2011-2013 was calculated employing capture-recapture method.
  
  
  RESULTS
  Total under-reported rate of deaths was 31.88%. For people aged between 0-14, 15-39, 40-69 and 60 above, under-reported rates of death were 33.35%, 34.93%, 29.10%, and 32.88%, respectively. And they were 31.72% and 32.02% for males and females, respectively. There was no significant difference shown in under-reported rates among deaths in different age groups (χ² = 7.24, P = 0.065) and genders (χ² = 0.06, P = 0.803). The under-reported rates in high-mortality, medium-mortality and low-mortality regions were 17.48%, 38.01%, and 36.22%, respectively with a significant difference (χ² = 213.25, P < 0.001). Death in local regions with mortality rate higher than 600.00/10(5), between 400.00/10⁵ and 600.00/10⁵ and lower than 400.00/10⁵ were adjusted with under-reported rates in three regions above respectively. The total adjusted morality rate in Xuanwei during 2011-2013 was 776.47/10⁵. For males and females, they were 918.73/10⁵ and 617.46/10⁵, respectively.
  
  
  CONCLUSIONS
  Overall under-reported rate of death was high in death registration system in Xuanwei. It was necessary to adjust mortality data reported with under-reported rate of death to estimate death patterns in this area.
authors: Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China.
authors: Gongbo
authors: G
authors: Chen
authors: Hecang
authors: H
authors: Huang
authors: Xiangyun
authors: X
authors: Ma
authors: Bofu
authors: B
authors: Ning
authors: Hongyan
authors: H
authors: Ren
authors: Xia
authors: X
authors: Wan
authors: Email: xnzou@126.com.
authors: Xiaonong
authors: X
authors: Zou
authors: Email: yangghuan@vip.sina.com.
authors: Gonghuan
authors: G
authors: Yang
mesh_terms: D002681:China; D000068598:Data Accuracy; D003644:Death Certificates; D005260:Female; D006801:Humans; D008297:Male; D009026:Mortality; D012042:Registries