Fig. 4A–B.

Fentanyl consumption via intravenous PCA, with 95% CIs, during (A) each period and during the (B) whole study period are shown. Patients in the Dexa-Ra group consumed less opioid during the 6- to 24-hour period and less overall opioid during the whole 72-hour period. Values with a significant difference (p < 0.05) are marked with an asterisk. P values in parentheses are the uncorrected values before Bonferroni analysis.