Fig. 2From: Charlson comorbidity index is predictive of postoperative clinical outcome after single-level posterior lumbar interbody fusion surgeryThere was no significant difference between group 0 and group 1. There was a significant difference between group 0 and group 2+. A significant difference was also seen between group 1 and group 2+. P values less than 0.05 were defined as significantBack to article page