The Effectiveness of Preemptive Thoracic Epidural Analgesia in Thoracic Surgery

Figure 1

Patient’s demand count on PCEA pump when Group C is compared to Group P (*: 𝑃=0.013, ^†: 𝑃=0.000, ^‡: 𝑃=0.002, ^#: 𝑃=0.001, ^α: 𝑃=0.000, and ^β: 𝑃=0.000).