Improved Pittsburgh Sleep Quality Index scores on first postoperative night achieved by propofol anesthesia in patients undergoing ambulatory gynecologic surgery

Table 3 Comparison of sleep latency and duration of patients after propofol anesthesia (n = 31) between preoperatively and postoperatively by paired t-test

	Preoperative	Postoperative	95% confidence interval	P
Sleep latency (min)	15.6 ± 24.1	7.6 ± 27.6	2.5 to 13.7	0.006
Sleep duration (h)	7.2 ± 0.9	8.1 ± 1.2	-1.4 to -0.5	< 0.001

The data are expressed as the mean ± SD.