Table 3.

Demographic and outcome data of the outpatient group.

Variable	Value
Age in years, mean (range)	57.3 (24-80)
Gender, no. of patients, male:female	57:48
Body mass index in kg/m2, mean (range)	30.0 (18.8-43.3)
Type of surgery, no. of patients, THA:TKA	49:56
ASA 1, no. of patients	4
ASA 2, no. of patients	58
ASA 3, no. of patients	40
Anesthesia type, no. of patients, general:spinal	43:62
Duration of surgery in minutes, mean (range)	106 (70-183)
PACU length of stay in minutes, mean (range)	351 (172-613)
Time to first ambulation in minutes, mean (range)	186 (16-428)
FAD in feet, mean (range)	43 (0-200)
TAD in feet, mean (range)	88 (0-290)
Preoperative Hgb in g/dL, mean (range)	14.3 (11.4-17.7)
Hospital length of stay in days, mean (range)	0.24 (0-2)
Urinary retention, no. of patients	23
Orthostatic hypotension, no. of patients	13
Successful same-day discharge rate	83/105 (79%)

ASA, American Society of Anesthesiologists Physical Status Classification System.

Time to first ambulation is the duration from entering PACU to the first successful ambulation attempt.

First ambulation distance (FAD) is the distance ambulated on the first attempt in PACU.

Total ambulation distance (TAD) is the total distance ambulated throughout the day in PACU.

Preoperative Hgb is the most recent hemoglobin level before surgery.