Table 2. Demographic Data
* Refer to table 1for definitions of “mild”versus “invasive” knee surgery. According to the authors designing the criteria, “mild” surgery did not require nerve blocks, whereas “invasive” surgery required femoral and/or sciatic nerve blocks based on anticipated surgical trespass.
†P = 0.004 by independent samples t test.
‡P < 0.001 by chi-square test.
ASA/PS = American Society of Anesthesiologists’ Physical Status classification; GA = general anesthesia; block = having received femoral/lumbar plexus and/or sciatic block(s) relevant to surgical site and anticipated surgical invasiveness; PACU = postanesthesia care unit (phase I recovery); SDRU = step-down recovery unit (phase II recovery).