Comment on Abdallah et al. entitled ‘‘body mass index and risk of surgical site infection following spine surgery: a meta-analysis’’.

摘要: 1. Authors searched only two electronic databases (Pubmed and Embase) for studies reporting on risk of surgical site infection following spine surgery. Small number required papers would be an important limitation the review. We suggest at least three should systematically searched, such as OVID, Cochrane Central Register, ClinicalTrials.gov so on. 2. that authors evaluate methodological quality selected studies, which could avoid potential bias in meta-analysis. Each included paper independently assessed by reviewers using a standardized form predefined criteria. And, we like to know how solve problems if there are discrepancies between authors. 3. Publication language was limited English Therefore, mention importance limitations their 4. The used random effect model pool data all forest plots even I value heterogeneity \50 %. As know, different models may result results. reason chose analyses. 5. In results part, funnel plot estimate publication symmetric inverse distribution obtained. However, it is not appropriate adjusted OR, six. inspected visually assess bias, meta-analyses with sufficient ([9).