Abstract:Objective The aim of this study was to evaluate the feasibility of using Pain index (Pi) to assess pain symptoms in elderly chronic pain patients. Methods A total of 154 elderly chronic pain patients whose age greater than 60 were enrolled patients were enrolled from patients seeking treatment at Pain Medicine Center of China Medical University Aviation General Hospital from April 2018 to March 2021, such as postherpetic neuralgia, trigeminal neuralgia, pelvic pain, cancer pain, avascular necrosis of femoral head, perineal pain, lumbar disc herniation, cervical disc herniation, etc. The subjective pain symptoms in elderly chronic pain patients were evaluated by Pi and VAS scales, respectively, and the relationship between them was analyzed using single factor correlation analysis and multiple factor regression analysis. Results The correlation analysis of Pi and VAS score in elderly chronic pain patients showed that the Pearson correlation coefficient was 0.797 (P < 0.001); After adjusted for types of pain, pain sites, gender, and age, Pi was found to be independently correlated to VAS score (P < 0.001). Conclusions Pi significantly correlates with VAS score, might be used to evaluate the subjective pain symptoms in elderly chronic pain patients and has good application value as an objective pain assessment tool.