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Multivariate analysis of factors associated with the VAS score after caudal epidural injection
HLD, herniated lumber disc; VAS, visual analogue scale; OR, odds ratio; CI, confidence interval.
ORs are for at least 50% reduction in pain (VAS), and each variable was adjusted for the other variables.
p-values and 95% CIs were calculated using the Wald chi-square test.
