The purposes of this study were to investigate relationships between
daytime sleepiness, insomnia, and the quality of sleep in clinical nurses
and provide basic data for the development of effective interventions for
increasing the quality of sleep.
The subjects included 208 nurses from five general hospitals in the J
province. Data were collected with a self-reported questionnaire on
May, 2014. Pittsburgh Sleep Quality Index(PSQI), Korean Epworth
Sleepiness Scale(KESS), Insomnia Severity Index(ISS) were employed
in this study to measure the quality of sleep, daytime sleepiness and
insomnia.
The data were analyzed using Cronbach''s α, descriptive statistical
analysis, t-test, ANOVA, Scheffe''s test, Pearson''s correlation
coefficient, and multiple regression analysis with the SPSS 20.0 version
program.
The result of this were as follows:
1. The mean scores of the subjects were 7.58(±3.61) on daytimesleepiness, 9.93(±6.22) on insomnia, and 7.29(±3.05) on the quality
of sleep.
2. The differences in daytime sleepiness, insomnia, and the quality of
sleep according to general characteristics, health-related
characteristics, and job-related characteristics were as follows:
1) There were significant differences in daytime sleepiness according
to age group, marital status, having worries, perceived stress,
depression, alcohol consumption, clinical experience, clinical
experience in present department, position, shift work, the number
of night shifts in a month, physical working burden, work
satisfaction, and fit to the job.
2) There were significant differences in insomnia according to age
group, educational level, marital status, leisure time, having
worries, perceived stress, depression, alcohol consumption,
subjective health status, clinical experience), clinical experience in
present hospital, position, shift work, clinical experience in shift, the
number of night shifts in a month, physical working burden, work
satisfaction, and fit to the job.
3) There were significant differences in the quality of sleep according
to age group, educational level, marital status, leisure time, having
worries, perceived stress, depression, alcohol consumption,
subjective health status, clinical experience, clinical experience in
present hospital, working unit, shift work, the number of night shifts
in a month, physical working burden, work satisfaction, and fit to
the job.
3. The daytime sleepiness had significant positive correlations with
insomnia(r=.49, p<.001) and the quality of sleep(r=.50, p<.001). And
insomnia had significant positive correlations with the quality of
sleep(r=.72, p<.001).4. The quality of sleep in clinical nurses significantly influenced by
insomnia(β=0.55, t=8.14, p<.001), daytime sleepiness(β=0.16,
t=2.83, p=.005), and work satisfaction(β=-0.15, t=-2.35, p=.020).
The three variables explained 55.9% of variance of the quality of
sleep(F=10.73, p<.001).
For the generalization of these findings, the nurses in various hospitals
considered the size and working environment should be studied.
To Improve the quality of sleep, the way to enhance daytime
sleepiness and insomnia should be considered, for those who were in
their twenties, were single, had clinical experience of 5-10 years, and
were shift workers.