Table 1. Demographic Characteristics of Subjects with Unadjusted Comparisons among the Treatment Groups
For categorical variables, values are shown as n (%). For continuous variables, values are shown as mean ± SD.
*P < 0.05 versus patients receiving neither epidural analgesia nor systemic nalbuphine.
†P < 0.005 versus patients receiving neither epidural analgesia nor systemic nalbuphine.
‡P < 10−6versus patients receiving neither epidural analgesia nor systemic nalbuphine.
NA = not applicable.