Table 2.

Correlation coefficient, r between PSQI-M and ESS-M scores.

PSQI Subcomponents	r	p
PSQI Global score	0.37	<0.001
C1 Sleep Quality	0.18	0.345
C2 Sleep Latency	0.13	0.385
C3 Sleep Duration	0.15	0.329
C4 Sleep Efficiency	0.06	0.463
C5 Sleep Disturbance	0.35	0.002
C7 Daytime Dysfunction	0.48	0.007

PSQI: Pittsburgh Sleep Quality Index, ESS: Epworth Sleepiness Scale.