The noninferiority of transcatheter aortic valve implantation compared to surgical aortic valve replacement for severe aortic disease: Evidence based on 16 randomized controlled trials.

Background: Currently, transcatheter aortic valve implantation (TAVI) as an effective and convenient intervention has been adopted extensively for patients with severe aortic disease. However, the efficacy and safety of TAVI have not yet been well evaluated and its noninferiority compared with traditional surgical aortic valve replacement (sAVR) still lack sufficient evidence. This meta-analysis was designed to comprehensively compare the noninferiority of TAVI with sAVR for patients with severe aortic disease.

The pretreatment thrombocytosis may predict prognosis of patients with colorectal cancer: a systematic review and meta-analysis.

Aim: Recently, several studies have reported that thrombocytosis may be associated with the poor prognosis of colorectal cancer (CRC). Nevertheless, their conclusions were still controversial. Results & methodology: We searched PubMed, Embase, Cochrane Library and Web of Science up to April 2016.