Table 2

Comparison of sleep quality, daytime sleepiness and daytime functioning of patients with OSA at baseline and after CPAP treatment at 1-month and 3-month periods

CharacteristicsBaseline (n = 50)1 month after treatment (n = 49)3 months after treatment (n = 39)Global p-value*
PSQI score
Good23 (46.0)22 (44.9)28 (71.8)0.027
Poor27 (54.0)27 (55.1)11 (28.2)
Mean ± SD10.1 ± 4.16.2 ± 3.14.8 ± 2.7<0.001
ESS score
Normal24 (48.0)39 (79.6)33 (84.6)<0.001
Abnormal26 (52.0)10 (20.4)6 (15.4)
Mean ± SD10.5 ± 4.87.3 ± 3.85.4 ± 3.5<0.001
FOSQ score
Mean ± SD13.1 ± 4.416.9 ± 2.8218.6 ± 2.5<0.001

Note(s): PSQI = Pittsburgh Sleep Quality Index, ESS = Epworth Sleepiness Score, FOSQ = Functional Outcomes of Sleep

*p-value from nonparametric tests for trend

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