Data Collection Tools
A 10-question questionnaire including sociodemographic characteristics
and Pitsburgh sleep quality scale, Berlin questionnaire and insomnia
severity scale were used to collect data.
Pitsburgh sleep quality scale: Scale was developed from
Buysse et al. [3] and adapted to Turkish by Ağargün et al. [4].
The scale is a self-report scale of 19 items that evaluates sleep
quality and impairment in the past month. It consists of 24 questions,
19 questions self-report, 5 questions are questions to be answered by
spouse or roommate. The 18 questions of the scale consist of 7
components. Each component is rated at 0-3 points. The total score of
the 7 components gives the total score of the scale. The total score
ranges from 0 to 21. If the total score is greater than 5, it indicates
“poor sleep quality.
The Berlin Questionnaire: The Berlin Questionnaire is a scale
consisting of three categories that measure the risk of sleep apnea. It
consists of a 10-question questionnaire including information on the
patient’s body mass, snoring characteristics, sleep status and blood
pressure. Each category is evaluated in its own way, and if 2 or more
categories are positive, the risk of obstructive sleep apnea syndrome
(OSAS) is considered high according to the Berlin Questionnaire
[5,6].
Insomnia Severity Scale: It has been developed to evaluate the
severity of insomnia and has a high reliability and reliability. Scale
items consisting of seven questions are scored between 0-4. The scores
that can be taken from the scale vary between 0-28 [7].