Fig. 2
Kaplan-Meier curves for patients stratified by surgical levels. Green line represented over three levels; Blue line represented less or equal to three levels, p = 0.136
Fig. 2 | BMC Musculoskeletal Disorders
Kaplan-Meier curves for patients stratified by surgical levels. Green line represented over three levels; Blue line represented less or equal to three levels, p = 0.136