title: [Mortality risks of type 2 diabetes mellitus among elderly patients: a 17-year cohort study].
abstract: OBJECTIVE
  To explore the mortality risks of elders with and without type 2 diabetes mellitus (T2DM) during a fellow-up period of 17 years.
  
  
  METHODS
  The subjects were elderly patients (>60 years old) undergoing annual health examinations at our hospital. And the incidence and risk factors were analyzed by Kaplan-Meier method and COX's proportional hazard.
  
  
  RESULTS
  A total of 2 142 subjects were divided into T2DM group (DM, n = 746) and non-T2DM group (N-DM, n = 1 396). During a 17-year follow-up, the mortality rate of all causes was 50.9% in DM group versus 32.45% in N-DM group (P < 0.01). The major mortality causes were malignant tumor, respiratory disease and cardiovascular disease. Kaplan-Meier analysis revealed that the accumulative mortality of all causes and cardiovascular with DM was significantly above that of N-DM. The independent mortality risk factors of elders was T2DM (P < 0.01, HR = 1.36, 95% CI: 1.192-1.558) and cardiovascular disease (P < 0.01, HR = 3.26, 95% CI: 2.887-3.690) based upon the COX's proportional hazard analysis.
  
  
  CONCLUSIONS
  Type 2 diabetes mellitus is an independent risk factor for elders with increased mortality risk.
authors.affiliation: Department of Senile Endocrinology, PLA General Hospital, Beijing 100853, China.
authors.forename: Fangfang
authors.initials: F
authors.lastname: Kan
authors.affiliation: Department of Senile Endocrinology, PLA General Hospital, Beijing 100853, China.
authors.forename: Fusheng
authors.initials: F
authors.lastname: Fang
authors.affiliation: Department of Senile Endocrinology, PLA General Hospital, Beijing 100853, China. Email: tianhui@medmail.com.cn.
authors.forename: Hui
authors.initials: H
authors.lastname: Tian
authors.affiliation: Department of Senile Endocrinology, PLA General Hospital, Beijing 100853, China.
authors.forename: Chunlin
authors.initials: C
authors.lastname: Li
authors.affiliation: Department of Senile Endocrinology, PLA General Hospital, Beijing 100853, China.
authors.forename: Minyan
authors.initials: M
authors.lastname: Liu
authors.affiliation: Department of Senile Endocrinology, PLA General Hospital, Beijing 100853, China.
authors.forename: Yanhui
authors.initials: Y
authors.lastname: Lu
authors.affiliation: Department of Senile Endocrinology, PLA General Hospital, Beijing 100853, China.
authors.forename: Banruo
authors.initials: B
authors.lastname: Sun
authors.affiliation: Department of Senile Endocrinology, PLA General Hospital, Beijing 100853, China.
authors.forename: Chuanhai
authors.initials: C
authors.lastname: Wang
mesh_terms: D000368:Aged; D002318:Cardiovascular Diseases; D015331:Cohort Studies; D003924:Diabetes Mellitus, Type 2; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D053208:Kaplan-Meier Estimate; D016016:Proportional Hazards Models; D012307:Risk Factors