Research Article
Positive Preemptive Analgesia Effectiveness of Pregabalin Combined with Celecoxib in Total Knee Arthroplasty: A Prospective Controlled Randomized Study
Figure 3
Linear regression analysis. The mean pain score upon movement within 48 hours after surgery was the independent variable (X). The cumulative dose of sufentanil within 48 hours after surgery was the dependent variable (Y). The difference was significant at the level.