Assessment of Perioperative Sleep Characteristics Using Subjective and Objective Methods: A Secondary Analysis of Prospective Cohort Study
Table 3
Results from the mixed-effects model for sleep fragmentation, sleep latency, and sleep time.
Characteristic
WatchPAT
SMHSQ
Beta (95% CI)
Beta (95% CI)
Sleep fragmentation (times)
Intercept
6.64 [5.94, 7.33]
<0.001
2.15 [1.13, 3.17]
<0.001
Time: postoperative vs. preoperative
0.50 [0.13, 0.87]
0.007
1.50 [0.96, 2.04]
<0.001
Admission type: inpatient vs. outpatient
-0.79 [-1.34, -0.24]
0.005
0.58 [-0.21, 1.38]
0.15
Anesthesia: general vs. other
-0.60 [-1.12, -0.08]
0.025
0.14 [-0.60, 0.88]
0.7
vs. <16
-0.09 [-0.64, 0.45]
0.7
-0.91 [-1.67, -0.14]
0.020
Obesity: vs. <30
0.11 [-0.42, 0.64]
0.7
0.37 [-0.39, 1.12]
0.3
pAHI: ≥15 vs. <15
0.33 [-0.18, 0.83]
0.2
0.11 [-0.60, 0.83]
0.8
Sleep latency (min)
Intercept
18.99 [11.70, 26.28]
<0.001
24.80 [5.23, 44.36]
0.013
Time: postoperative vs. preoperative
3.86 [0.17, 7.54]
0.040
1.31 [-10.16, 12.78]
0.8
Admission type: inpatient vs. outpatient
1.07 [-4.74, 6.89]
0.7
2.14 [-12.94, 17.22]
0.8
Anesthesia: general vs. other
0.52 [-4.97, 6.01]
0.9
-7.00 [-21.04, 7.05]
0.3
vs. <16
5.41 [-0.30, 11.13]
0.063
12.20 [-2.46, 26.86]
0.10
Obesity: vs. <30
-6.08 [-11.64, -0.52]
0.032
15.15 [0.63, 29.67]
0.041
pAHI: ≥15 vs. <15
4.05 [-1.23, 9.33]
0.13
-7.21 [-20.79, 6.38]
0.3
Night sleep time (hours)
Intercept
5.30 [4.68, 5.93]
<0.001
7.12 [6.14, 8.10]
<0.001
Time: postoperative vs. preoperative
0.03 [-0.30, 0.37]
0.8
-1.51 [-2.07, -0.94]
<0.001
Admission type: inpatient vs. outpatient
0.76 [0.26, 1.25]
0.003
-0.56 [-1.31, 0.19]
0.15
Anesthesia: general vs. other
0.56 [0.09, 1.03]
0.019
0.46 [-0.24, 1.16]
0.2
vs. <16
-0.21 [-0.70, 0.27]
0.4
-0.41 [-1.14, 0.32]
0.3
Obesity: vs. <30
-0.54 [-1.01, -0.06]
0.026
-0.69 [-1.40, 0.02]
0.057
pAHI: ≥15 vs. <15
0.29 [-0.16, 0.74]
0.2
0.70 [0.02, 1.37]
0.042
SMHSQ: St. Mary’s Hospital Sleep Questionnaire; BMI: body mass index (kg/m2); CI: confidence interval; CES-D: Center for Epidemiologic Studies Depression scale; pAHI: peripheral arterial tonometry-derived apnea-hypopnea index. A mixed-effects model was conducted adjusting for adjusted for admission type, anesthesia type, depression, obesity, and pAHI.
