Factors associated with suicidal ideation in patients with multiple myeloma.

Patients with multiple myeloma are at risk of suicide. The study objective was to investigate the clinical risk factors of suicidal ideation among multiple myeloma patients. Consecutive inpatients with a new primary diagnosis of multiple myeloma were recruited. Patients were asked to complete the Patient Health Questionnaire-9 to measure suicidal ideation and depression. Patient demographic and biomedical characteristics (age, gender, education, marital status, employment, performance status and cancer stage) and pain and depression scores were analyzed as potential factors associated with suicidal ideation. Of the 79 patients, 10 [12.6% (95% confidence interval: 7-22)] had suicidal ideation. The results of a logistic regression analysis showed that being unmarried, less advanced cancer stage and depression were significantly associated with the presence of suicidal ideation. These findings suggest that a non-negligible proportion of patients with multiple myeloma experience suicidal ideation and that several multidimensional factors are significantly associated.