The relationship between the Keel STarT back screening tool, the short form of central sensitivity inventory and health-related quality of life in patients with low back pain

Introduction: It has been reported that the scores of the Keel STarT Back Screening Tool (SBST) and the short form of Central Sensitization Inventory (CSI-9) are associated with Health-Related Quality of Life (HRQoL) in patients with low back pain (LBP). However, it is unclear which screening tool is more associated with HRQoL in patients with LBP. Objective: To identify which SBST and CSI-9 are more related to HRQoL and investigate the association between SBST and CSI-9 scores. Study design: Cross-sectional study. Method: A multiple regression analysis was conducted to examine the factors associated with the HRQoL using age, pain intensity, disability, SBST score, and CSI-9 score as independent variables. Spearman's rank correlation coefficient was also conducted to determine the association between SBST and CSI-9 score. Results: Multiple regression analysis revealed that the Oswestry Disability Index (ODI) score (p < 0.01,beta = -0.62, VIF = 1.70) and SBST score (p < 0.01, beta = -0.32, VIF = 1.86) were significant associated variables. A significant association was found between SBST and CSI-9 scores (p < 0.01, rho = 0.47). Conclusion: The results showed that in patients with LBP the association of HRQoL with SBST was more substantial than with CSI-9.