Observational Study
Copyright ©The Author(s) 2021.
World J Clin Cases. Aug 6, 2021; 9(22): 6319-6328
Published online Aug 6, 2021. doi: 10.12998/wjcc.v9.i22.6319
Table 3 Comparison of Pittsburgh Sleep Quality Index and Epworth Sleepiness Scale scores at 6 mo after surgery between Group 1 (n = 53) and Group 2 (n = 86)

Total (n = 139)
Group 1 (n = 53)
Group 2 (n = 86)
P value
PSQI (points)5.0 (4.0, 8.0)3.0 (2.0, 5.0)7.0 (5.0, 10.0)< 0.001a
PSQI ≥ 8 (cases)46 (33.1%)4 (7.5%)42 (48.8%)< 0.001a
ESS (points)5.0 (3.0, 8.0)4.0 (3.0, 7.0)5.5 (3.0, 8.0)0.194
ESS ≥ 9 (cases)20 (14.4%)5 (9.4%)15 (17.4%)0.191