ISSN: 2451-0629
Archives of Medical Science - Atherosclerotic Diseases
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Official journal of the International Lipid Expert Panel (ILEP)
vol. 5
Letter to the Editor

Prevalence and correlates of sleep disorders in Greek patients with type 2 diabetes: comparison of an urban and a semi-urban population

Athanasia K. Papazafiropoulou
Maria Stamatelatou
Louisa Mpoumi
Elias Georgopoulos
Maria Dasenaki
Andreas Melidonis 

First Department of Internal Medicine and Diabetes Center, General Hospital “Tzaneio”, Piraeus, Greece
Department of Internal Medicine and Diabetes Clinic, General Hospital – Health Center of Sitia, Greece
Arch Med Sci Atheroscler Dis 2020; 5: e198–e199
Online publish date: 2020/07/21
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Sleep disturbances are common in type 2 diabetes (T2D) patients [1]. To promote better management of T2D, sleep disorders must be addressed in these patients and treated early [2]. Therefore, the aim of the present study was to estimate the prevalence and correlates of sleep disorders in Greek patients with T2D, comparing an urban and a semi-urban population.
The study population comprised 308 T2D patients: 139 (80 men, mean age ± standard deviation: 65.5 ±10.1 years, glycated hemmoglobin (HbA1c) 7.3 ±1.4%, body mass index (BMI) 30.7 ±6.1 kg/m2, duration of T2D 10.9 ±7.9 years) attending the Diabetes Center of “Tzaneio” General Hospital of Piraeus (urban population, group A) and 169 (82 men, mean age: 67.9 ±12.4 years, HbA1c 7.0 ±1.3%, BMI 30.8 ±6.1 kg/m2, duration of T2D 11.2 ±8.7 years) attending the Diabetes Clinic of General Hospital – Health Center of Sitia (semi-urban population, group B) from July to December 2018. Quality of sleep was evaluated by administering the Pittsburgh Sleep Quality Index (PSQI), a self-report questionnaire that assesses sleep quality and quantity over a month-long period [3].
The mean PSQI score of group A was 11.22 ±6.44, while 88.5% of participants had a PSQI score ≥ 5, indicating poor quality of sleep. The same pattern was observed in group B where the mean PSQI score was 12.48 ±5.85, and 88.8% had a PSQI score ≥ 5. Participants with a PSQI score ≥ 5 did not differ between study groups (p = 0.13). Logistic regression analysis, after adjustment for sex, BMI, presence of hypertension and dyslipidemia, smoking, diabetes micro- and macrovascular complications, and oral antidiabetic treatment, showed that poor quality of sleep (PSQI score ≥ 5) in the total sample population was associated with insulin treatment (odds ratio (OR) = 0.03, 95% confidence interval (95% CI): 0.31–0.99) and HbA1c (OR = 6.56, 95% CI: 1.93–16.14). In group A, poor quality of sleep was associated with insulin treatment (OR = 0.02, 95% CI: 0.10–0.84) and HbA1c (OR = 7.55, 95% CI: 1.97–18.81). In group B, poor quality of sleep was associated only with age (OR = 1.36, 95% CI: 1.06–1.74).
Our study suggested that Greek patients with T2D have a high prevalence of sleep disorders. There was no significant difference regarding sleep disorders between studied populations. Our analysis also indicated that insulin treatment and HbA1c were the greatest predictors of sleep disorders. It is well known that sleep...

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