Background: It is generally agreed that the relationship between chronic low back pain and depression is bidirectional. Depression
can complicate the management and interfere with recovery in chronic back pain and similarly, chronic back pain can induce
depression. Often if patients with depression are not managed, their back-pain morbidity may be prolonged. Objective: The purpose
of this study was to assess the prevalence of depression among different ethnic groups with chronic low back pain (CLBP). Methods:
A cross-sectional prospective study was done on clinically diagnosed CLBP patients attending orthopaedic clinic at Hospital Tuanku
Jaafar, Seremban, Malaysia over twelve months between July and December 2019. The convenience sampling was used to recruit
study participants. The Ministry of Health (MOH) pain scale and Patient Health Questionnaire (PHQ-9) instruments were used to
identify the severity of pain and depressive symptoms and to obtain socio-demographic. SPSS was used to evaluate the relationship
between demographic factors, pain, and depressive symptoms. Results: A total of 100 patients with CLBP comprising 71 females and
29 males participated in the study. About 68% scored positively on the PHQ-9 with 40% having moderate to severe rating scores.
The risk of depressive symptoms increased with the severity of pain. 77.8% of the studied population with severe CLBP experienced
depressive symptoms. Among the different ethnic groups, the prevalence of depression in Indians was 83.3%, while it was 58.2%
among Malays. Conclusion: This study shows that two-thirds of patients with CLBP have depression, and the prevalence is low in
Malays as compare to other races.
Keywords: Chronic back pain, depression, ethnicity, Malaysia, prevalence