Objectives: To determine whether serum vitamin D levels were
related to the prevalence of anxiety and depression among patients
with chronic obstructive pulmonary disease (COPD), as well as their
spirometry parameters, disease severity, and other clinical findings.
Materials and Methods: Ninety-two stable patients with
COPD aged over 18 years with no exacerbations in the previous
month were included. Symptom severity was assessed using the
modified Medical Research Council (mMRC) dyspnea scale and
COPD Assessment Test (CAT) scores. Spirometry tests were
performed and previous hospitalization histories were recorded
to determine ABCD groups of the patients according to their
combined COPD assessments. Their Body mass index, airflow
Obstruction, Dyspnea and Exercise capacity (BODE) indices were
calculated and the Hospital Anxiety and Depression Scale (HADS)
was administered. Serum vitamin D levels were determined using
immune electrochemiluminescence.
Results: According to the HADS scores, 16 patients (17.4%) had
the risk of anxiety and 29 (31.5%) had the risk of depression. The
risk of anxiety differed significantly (P= 0.016 Fischer’s exact test)
between the ABCD groups. Anxiety scores were positively correlated
with both mMRC (r= 0.315; P= 0.002) and CAT (r= 0.445; P= 0.000)
scores. Similarly, depression scores correlated positively with mMRC
(r= 0.249; P= 0.017) and CAT (r= 0.373; P= 0.000) scores. Neither
anxiety nor depression scores were significantly correlated with % of
predicted FEV1 (p= 0.339, P= 0.671). Serum vitamin D levels were
inversely correlated with anxiety (r= -0.215; P= 0.039) and depression
(r= -0.244; P= 0.019) scores. Anxiety scores were positively correlated
with BODE although not statistically significantly (r= 0.199; P= 0.058).
Conclusion: A negative correlation was revealed between
serum vitamin D levels and HADS scores, and symptom scores
were positively correlated to HADS scores, independent of % of
predicted FEV1.
Primary Language | English |
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Subjects | Clinical Sciences |
Journal Section | Articles |
Authors | |
Publication Date | February 26, 2018 |
Published in Issue | Year 2018 |