Meta-analysis for all the included literature was performed by STATA 12.0 to summarize test performance with Forest plots after a heterogeneity test. 
STATA
An extensive English language literature retrieval regarding the association between overweight, obesity, and the risk of LBP incidence was conducted on PubMed and EMBASE databases through December 2015. 
PubMed
An extensive English language literature retrieval regarding the association between overweight, obesity, and the risk of LBP incidence was conducted on PubMed and EMBASE databases through December 2015. 
EMBASE