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

Table 1 Demographic characteristics of patients in propofol anesthesia and sevoflurane anesthesia groups

	Propofol group (n = 31)	Sevoflurane group (n = 30)	P
Height (cm)	158.6 (± 5.8)	159.3 (± 5.2)	0.62
Weight (kg)	59.6 (± 8.7)	65.1 (± 14.6)	0.08
Age (yr)	43.2 (± 5.9)	41.3 (± 6.9)	0.25
Operation time (min)	50.4 (± 12.6)	46.3 (± 9.7)	0.11
Anesthesia time (min)	65.9 (± 15.1)	62.5 (± 10.4)	0.16
Recovery time (min)	55.0 (± 3.7)	54.5 (± 4.0)	0.32
Adverse effect
Dizziness (patient)	1	2
Interval from discharge to sleep (min)	572.2 (± 151.4)	553.1 (± 138.6)	0.45

The data are expressed as the mean ± SD.

Table 2 Comparison of Pittsburgh Sleep Quality Index scores between two groups with display of each component by Wilcoxon signed-rank test

	Propofol anesthesia (n = 31)	Sevoflurane anesthesia (n = 30)	P
Global PSQI score (before surgery)	4.9 ± 2.3	5.5 ± 3.2	0.38
Global PSQI score (after srugery)	3.3 ± 1.3	6.5 ± 2.8	< 0.001
	P < 0.001	P = 0.02
Component 1
Subjective sleep quality (before)	2.3 ± 0.7	1.3 ± 0.7
Subjective sleep quality (after)	1.7 ± 0.4	1.5 ± 0.8
	P < 0.001	P = 0.13
Component 2
Sleep latency (before)	0.5 ± 0.8	1.0 ± 1.1
Sleep latency (after)	0.2 ± 0.6	0.6 ± 0.9
	P = 0.005	P = 0.03
Component 3
Sleep duration (before)	0.6 ± 0.6	1.1 ± 1.0
Sleep duration (after)	0.2 ± 0.4	1.2 ± 1.0
	P = 0.001	P = 0.77
Component 4
Habitual sleep efficiency (before)	0.0 ± 0.2	0.4 ± 0.8
Habitual sleep efficiency (after)	0.0 ± 0.2	1.1 ± 1.2
	P = 1.00	P = 0.01
Component 5
Sleep disturbances (before)	1.0 ± 0.0	0.8 ± 0.4
Sleep disturbances (after)	1.0 ± 0.0	1.0 ± 0.3
	P = 1.00	P = 0.01
Component 6
Use of sleeping medication (before)	0.3 ± 0.8	0.1 ± 0.5
Use of sleeping medication (after)	0.0 ± 0.2	0.0 ± 0.0
	P = 0.06	P = 0.32
Component 7
Daytime dysfunction (before)	1.0 ± 0.0	0.8 ± 0.4
Daytime dysfunction (after)	1.0 ± 0.0	1.1 ± 0.5
	P = 1.00	P = 0.01

The data are expressed as the mean ± SD. PSQI: Pittsburgh Sleep Quality Index.

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.

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.