ABSTRACT Objectives: To present the Spine Surgery Database developed by the Brazilian Spine Study Group and the methodology involved in its creation, in addition to presenting initial informationabout
N = 87 (varenicline N = 42, placebo N = 45) based on subjects who had one post baseline reading on at least one outcome variable. Actual N's for some variables are lower because of missing data on sel
Abstract Background Multicenter registries representing the real world can be a significant source of information, but few studies exist describing the methodology to implement these tools. Objecti
