Affiliations: [a] Department of Physical Medicine and Rehabilitation, Medical Faculty, Mersin University, Mersin, Turkey | [b] Department of Physical Medicine and Rehabilitation, Mus State Hospital, Muş, Turkey | [c] Department of Biostatistics and Medical Informatics, Medical Faculty, Düzce University, Düzce, Turkey | [d] Department of Biostatistics and Medical Informatics, Medical Faculty, Mersin University, Mersin, Turkey
Correspondence:
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Corresponding author: Melek Sezgin, Department of Physical Medicine and Rehabilitation, Medical Faculty, Mersin University, Mersin, Turkey. Tel.: +90 324 2410000/2558, +90 542 5287800; E-mail:mksezgin@gmail.com
Abstract:
OBJECTIVE: The aim of this study was to investigate sleep quality
in patients with chronic low back pain (CLBP) and its relationship with
pain, functional status, and health-related quality of life (HRQOL). METHODS: Two hundred patients with CLBP aged 20-78 years (mean: 50.2 years) and 200 sex- and age-matched pain-free healthy controls (HCs) aged
21-73 years (mean: 49.7 years) were included in this study. After lumbar
region examination, in patients, pain was evaluated with the Short
Form-McGill Pain Questionnaire (SF-MPQ), functional capacity with the
Functional Rating Index (FRI), and health-related quality of life with the
Short Form-36 (SF-36). The Pittsburgh Sleep Quality Index (PSQI) was used to
evaluate sleep quality of both groups. The sleep quality was compared between the patients and HCs. In patients
with CLBP, its relations with pain, functional status and HRQOL were also
investigated. RESULTS: The patients had significantly higher total scores
(8.1 ± 4.3, 4.6 ± 3.4, P< 0.001, respectively) and subscale scores
(P< 0.001) for PSQI compared to HCs. The groups were only similar in use of
sleeping medication (P> 0.05) Among the patients, sleep quality was worse in
women, in the patients with complaints more than 11 years, in the patients
with low back and two leg pain (P< 0.05). Mean scores of the FRI, SF-MPQ, and
visual analog scale in the patients were 8.5 ± 3.0, 16.7 ± 8.0,
6.9 ± 1.2, respectively. The PSQI total scores of patients were
positively related with both SF-MPQ and FRI scores (P< 0.001). Also, there
were negative relationships between the physical component summary score of
the SF-36 and all subscale scores of the PSQI, without sleep duration of
PSQI (P< 0.001). CONCLUSION: The sleep quality of patients with CLBP was worse
compared to HCs, and there were positive relations between the sleep quality
with pain and functional status. Also, the poor sleep quality had negative
effect on the physical component of quality of life.
Keywords: Chronic low back pain, functional status, health-related quality of life, sleep quality
