title: [Study on the prevalence of depression among cancer patients and its influencing factors in Shanghai].
abstract: OBJECTIVE
  To determine the prevalence of depression among cancer patients and its influencing factors.
  
  
  METHODS
  We investigated 7967 cancer patients who lived in communities with cluster sampling based on 'Shanghai Cancer Patient Database'. They were investigated through questionnaires and completed the Zung Self-rating Scale. 6694 questionnaires were identified as 'qualified'. We calculated the prevalence of depression and determined the factors with logistic regression model.
  
  
  RESULTS
  The prevalence rate of depression among cancer patients in communities was 24.74% (95% CI: 23.71% - 25.79%). Results from multi-factor analysis showed that duration since diagnosis, stages at diagnosis, metastasis, therapeutics, KPS scores, and pain VAS scores were the important factors.
  
  
  CONCLUSIONS
  Early detection, improving the curative effect and providing community health services could reduce the prevalence of depression.
authors.affiliation: Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Zheng
authors.forename: Jie-jun
authors.initials: JJ
authors.lastname: Wang
authors.forename: Jian-jun
authors.initials: JJ
authors.lastname: Zou
authors.forename: Chun-xiao
authors.initials: CX
authors.lastname: Wu
authors.forename: Ping-ping
authors.initials: PP
authors.lastname: Bao
authors.forename: Wei
authors.initials: W
authors.lastname: Lu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002681:China / Q000453:epidemiology; D003863:Depression / Q000453:epidemiology* / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000150:complications / Q000523:psychology*; D015995:Prevalence; D011795:Surveys and Questionnaires; D055815:Young Adult