The SPSS version 23.0 statistics program (IBM Co., Armonk, NY) was used. Patients in the study were classified as responders or non-responders based on the predefined success criteria. Patient demographic and clinical characteristics were reported using descriptive statistics. Descriptive statistics were summarized by means and standard deviations for continuous outcomes, and frequencies (%) for categorical outcomes.
Univariate logistic regression analyses were performed using the patient’s demographic, clinical factors, and technical factors as a potential predictor to quantify the outcome of procedure success. Fifteen predictive factors were entered into the univariate analysis. Then multivariate logistic regression analysis was applied with factors showing a trend towards statistical significance (P < 0.200) in univariate analysis. Factors such as depression, baseline NRS score, performing prognostic block, opioid use, degree of degeneration, prior surgery history, lesion time, and number of nerves targeted (three or five nerves), were selected as the most explanatory variables in univariate analysis and were used in the multivariate model to predict the outcome of the RF procedure success. An odds ratio (OR) with 95% confidence interval (CI) was calculated and P < 0.05 was considered statistically significant.
Univariate logistic regression analyses were performed using the patient’s demographic, clinical factors, and technical factors as a potential predictor to quantify the outcome of procedure success. Fifteen predictive factors were entered into the univariate analysis. Then multivariate logistic regression analysis was applied with factors showing a trend towards statistical significance (P < 0.200) in univariate analysis. Factors such as depression, baseline NRS score, performing prognostic block, opioid use, degree of degeneration, prior surgery history, lesion time, and number of nerves targeted (three or five nerves), were selected as the most explanatory variables in univariate analysis and were used in the multivariate model to predict the outcome of the RF procedure success. An odds ratio (OR) with 95% confidence interval (CI) was calculated and P < 0.05 was considered statistically significant.