title: [Vasectomy does not increase the risk of prostate cancer in Chinese men: A meta-analysis].
abstract: OBJECTIVE
  To investigate the correlation of vasectomy with the risk of prostate cancer in Chinese men.
  
  
  METHODS
  We systematically searched the databases CNKI, VIP, Wanfang, PubMed, Embase, and Cochrane Library for the literature relating the relationship between vasectomy and the risk of prostate cancer in Chinese males up to December 2014. According to the inclusion and exclusion criteria, two investigators independently selected the eligible publications, evaluated their quality, and extracted relevant information, followed by a meta-analysis with the software STATA 12.0.
  
  
  RESULTS
  Nine studies were included in the analysis involving 1 202 cases of prostate cancer and 4,496 controls. Random-effect model analysis revealed no statistically significant correlation between vasectomy and the risk of prostate cancer (OR = 1.05; 95% CI 0.62-1.79), with an obvious heterogeneity (P < 0.001, I2 = 85.7%). No significant publication bias was found among the included studies (Egger, P = 0.824; Begg, P = 0.348).
  
  
  CONCLUSIONS
  The results of our meta-analysis do not support the association of vasectomy with the increased risk of prostate cancer in Chinese population.
authors.forename: Wen-qing
authors.initials: WQ
authors.lastname: Lian
authors.forename: Fei
authors.initials: F
authors.lastname: Luo
authors.forename: Peng-liang
authors.initials: PL
authors.lastname: Chen
authors.forename: Shen-fan
authors.initials: SF
authors.lastname: Wang
authors.forename: Bo-wei
authors.initials: BW
authors.lastname: Zhou
authors.forename: Shan-chao
authors.initials: SC
authors.lastname: Zhao
mesh_terms: D044466:Asian People; D002681:China; D006801:Humans; D008297:Male; D011471:Prostatic Neoplasms / Q000208:ethnology / Q000209:etiology*; D018570:Risk Assessment; D014659:Vasectomy / Q000009:adverse effects*