Figure 3. Pain scores on a 10-cm visual analog scale at admission to the postanesthesia care unit, for the following 2 h, at time of discharge from the postanesthesia care unit, and at 24 h after surgery. Data are median +/− 25th and 75th percentiles of patients receiving intrathecal saline ([black square]) or 25 [micro sign]g ([white square]), 50 [micro sign]g ([black circle]), or 75 [micro sign]g ([white circle]) neostigmine. *P < 0.05 versus all neostigmine groups.