Table 2

Total amount of fentanyl use and administration frequency of patient-controlled analgesia

FactorGroup; median (IQR)*p value
Control, n = 19Lidocaine, n = 17†
Fentanyl mean ± SD, μg2339.26 ± 387.021931.65 ± 457.030.007
Administration frequency of PCA, no.76.00 (57.00–96.00)49.00 (41.00–57.00)0.003‡
Satisfaction score, 0–105.00 (3.00–6.00)6.00 (4.50–7.00)0.049‡

  • IQR = interquartile ratio; PCA = patient-controlled analgesia; SD = standard deviation.

  • ↵* Unless otherwise indicated.

  • ↵† p < 0.05 compared with the control group.

  • ↵‡ Mann–Whitney U test.