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Relative Visual Analog Scale pain score differences between intra-articular facet and transforaminal corticosteroid injections, according to the VAS baseline value with adjustments for age, sex, and employment status. The intention-to-treat (A) and as-treated (B) analyses are presented. Error bars indicate 2-sided 95% CIs. Squares indicate mean differences. The dotted vertical line marks the 15% margin of noninferiority. LCL indicates lower confidence limit; UCL, upper confidence limit.
