We used random effects rather than a fixed effects model because of this takes into account the heterogeneity between multi-studies. Publication bias was assessed by visible inspection of a funnel plot. An extremely common and simple version of the meta-analysis method is commonly referred to as the inverse-variance method. The inverse variance method is so named because the weight given to each study is chosen to be the inverse of the variance of the result estimate. All analyses had been performed with RevMan edition 5.1. Probability value P 2 distribution with n-1 examples of freedom, where n equals the real number of groups. Results: Outcomes of the searchFrom our searches of the electronic databases and after removing duplicates we identified a complete of 206 unique references.Haleem MD, Michael J. O'Malley MD, and Constance R. Chu MD. T. David Sisk Award for Best Review Paper The winners were selected from the best review papers submitted to Sports Health: A Multidisciplinary Approach. The award will include a $2,500 cash prize and a plaque. This season's recipient is ‘Prospective Predictors of Patellofemoral Discomfort Syndrome: A Systematic Review with Meta-analysis’ from authors Evangelos Pappas PT, PhD, OS, and Wing M. Wong-Tom PT, MS, OCS. T. David Sisk Award for Greatest International Paper The winners had been selected from the very best international papers submitted to Sports activities Health: A Multidisciplinary Strategy. The award will include a $2,500 money prize and plaque.