Do people with low back pain walk differently? A systematic review and meta-analysis.

"Competing interests The authors declare that they have no competing interests."

"AcknowledgmentsThe authors thank Ivan Portillo, MLIS, AHIP, for his assistance in refining the search strategy and search terms. Jo Armour Smith is supported by grant K01HD092612, awarded by the Eugene Kennedy Shriver National Institute of Child Health and Human Development of the National Institutes of Health. Dr. Lee reports grants from the NIH (NICHD), and personal fees from the Department of Defense outside the submitted work; in addition, Dr. Lee has a patent issued for his Method and Apparatus for Performing Timed Up-And-Go Test. All the support had no involvement in the study design and writing of the manuscript or the decision to submit it for publication."

"This review was conducted based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines (PRISMA). The protocol was registered in the International Prospective Register of Systematic Reviews (PROSPERO: CRD42018078746)."