Table 2 Infusion rate and administration period of investigational drug
|  | Remifentanil N = 92 | Fentanyl N = 90 |
|---|---|---|
Infusion rate-mean    Remifentanil: µg/kg/min    Fentanyl: µg/kg/h | 0.046 ± 0.036 (0.02, 0.24) | 0.215 ± 0.191 (0.10, 1.17) |
Infusion rate-minimum    Remifentanil: µg/kg/min    Fentanyl: µg/kg/h | 0.024 ± 0.002 (0.01, 0.025) | 0.100 ± 0.001 (0.09, 0.10) |
Infusion rate-maximum    Remifentanil: µg/kg/min    Fentanyl: µg/kg/h | 0.056 ± 0.054 (0.025, 0.34) | 0.321 ± 0.644 (0.10, 6.00) |
Dosing duration (h) | 12.37 ± 14.58 (6.0, 119.5) | 12.59 ± 16.26 (3.6, 121.9) |