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

Table 4 Comparison of sleep latency, trouble staying awake, and enough enthusiasm for patients after sevoflurane anesthesia (n = 30) between preoperatively and postoperatively by paired t-test and Wilcoxon signed-rank test

	Preoperative	Postoperative	95% confidence interval	P
Sleep latency (min)	25.4 ± 20.9	18.8 ± 16.1	-7.4 to 13.8	0.08
Trouble staying awake (sum of question scores)	0.1 ± 0.3	0.5 ± 0.6	-0.6 to -0.2	0.001
Enough enthusiasm (sum of question scores)	0.7 ± 0.4	1.4 ± 0.6	-0.9 to -0.4	< 0.001

The data are expressed as the mean ± SD or range.