Serum C-peptide concentration and prostate cancer: A meta-analysis of observational studies.

Background: The association between serum C-peptide concentration and prostate cancer remains unexplored. Therefore, we conducted a meta-analysis to assess whether C-peptide serum concentrations are associated with increased prostate cancer risk.

Methods: Several databases were searched to identify relevant original research articles published before November 2017.

Association between cadmium exposure and urolithiasis risk: A systematic review and meta-analysis.

Background: We performed a meta-analysis to determine whether a consistent relationship exists between cadmium exposure and urolithiasis in humans. Accordingly, we summarized and reviewed previously published quantitative studies.

Methods: Eligible studies with reference lists published before June 1, 2017 were obtained from searching several databases.

Association between butchers and cancer mortality and incidence: A systematic review and meta-analysis.

Background: In this study, we evaluated whether increased risks of mortality and cancer incidence exist among butchers worldwide. To achieve this goal, we conducted a systematic review and meta-analysis to investigate the correlations of the risks of cancer death and incidence with male and female butchers.

Methods: We obtained data by performing a comprehensive literature search in several databases for eligible studies published before March 2017.

Sleep problems and injury risk among juveniles: A systematic review and meta-analysis of observational studies.

Recent studies have reported inconsistent results regarding the association between sleep problems and injury risk among juveniles. Moreover, the extent of this risk remains largely unexplored. Thus, a systematic review and meta-analysis was conducted by our team to determine whether sleep problems increase the incidence of injuries among juveniles.

Vasectomy and cardiovascular disease risk: A systematic review and meta-analysis.

Background: Even though several studies comparing vasectomy and cardiovascular disease (CVD) risk have been reported, most are small series with conflicting results. However, the extent of the risk is still uncertain. We therefore explored whether an association exists between vasectomy and CVD incidence and mortality.

The effect of chinese herbal medicine Banxia Baizhu Tianma Decoction for the treatment of vertebrobasilar insufficiency vertigo: A systematic review and meta-analysis of randomized controlled trials.

Objectives: Banxia Baizhu Tianma Decoction (BBTD) is widely used to treat vertebrobasilar insufficiency vertigo (VBIV) in China, but its efficacy remains largely unexplored. We systemically summarized relevant evidence from randomized controlled trials (RCTs) to assess the therapeutic effect of BBTD.

Methods: Seven electronic databases were searched for relevant electronic studies published before July 2016.