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In addition, we reviewed the reference lists from all relevant articles to identify additional studies. The following criteria were used to include relevant studies for meta-analysis: (i) case�Ccontrol or cohort study published as an original article; (ii) papers reported in English; and (iii) findings expressed as OR or RR and its 95% CI, or sufficient information allowing us to compute them. Figure?1 summarizes the process of identifying and selecting studies. A total of 13 articles were finally included in the meta-analysis.7�C19 We extracted the name of the first author, http://www.selleckchem.com/products/midostaurin-pkc412.html the year of publication, the country in which the study was carried out, study design, study period, sample size, adjusted effect estimates for highest versus lowest level of consumption, exposure assessment and adjusted covariates. Considering that prostate cancer is a rare disease, the OR was assumed to be approximately the same as RR, and the RR was used as the study outcome. For studies that reported several multivariable-adjusted RR, we extracted the effect estimate that was most fully adjusted for potential confounders. One study12 reported separate RR http://www.selleckchem.com/products/liproxstatin-1.html for GSTM1 null and GSTM1 present genotypes, we calculated the overall RR by combining these estimates with the method of Mantel and Haenszel.20 In our meta-analysis, we pooled data using the fixed or random effects models depending on heterogeneity between studies. Study-specific RR and 95% CI were extracted from each paper, then log RR were weighted by the inverse of their variances to obtain a pooled RR and its 95% CI. Publication bias was assessed using the tests of Egger21 and Begg.22 Statistical significance was considered when P? https://en.wikipedia.org/wiki/Ketanserin (Table?1). A total of 10 of these studies were carried out in the USA/Canada,7�C15,17 whereas one was in Asia16 and two in Europe.18,19 Information on cruciferous vegetables intake was obtained by interview,8 self-administered questionnaire7,9�C11,13,15�C19 or both techniques.12,14 All seven cohort studies and five case�Ccontrol studies reported no significant association between cruciferous vegetables intake and overall prostate cancer incidence, whereas only one case�Ccontrol study found a significant decreased risk.9 In addition, two studies reported significantly negative associations in advanced prostate cancer.10,15 Figure?2 plots the pooled risk estimates for overall cruciferous vegetables intake by study design.