Prevalence of smoking in patients with bipolar disorder, major depressive disorder and schizophrenia and their relationships with quality of life

Abstract

Few studies have compared the prevalence of smoking between patients with bipolar disorder, major depressive disorder (MDD) and schizophrenia. This study examined the prevalence of smoking and its relationships with demographic and clinical characteristics, and quality of life (QOL) in patients with these psychiatric disorders. A total of 1,102 inpatients were consecutively screened. Psychopathology and QOL were measured with standardized instruments. The prevalence of current smoking in the whole sample was 16.7%; 17.5% in bipolar disorder, 10.6% in MDD and 18.5% in schizophrenia. The rates of smoking in bipolar disorder (p = 0.004, OR = 2.5, 95%CI: 1.3–4.7) and schizophrenia (p = 0.03, OR = 2.0, 95%CI: 1.06–3.8) were significantly higher than in MDD, while no difference was found between bipolar disorder and schizophrenia. Smokers had a higher mental QOL than non-smokers (p = 0.007) in MDD, but no difference was found in the other two groups. Male gender, living alone, higher personal income, older age of onset, health insurance coverage, and first episode was significantly associated with smoking in one or more diagnostic groups. Smoking appears more common in bipolar disorder and schizophrenia than in MDD in China. The figures in all disorders were lower than that reported in most of other countries.

Prevalence of depression and its impact on quality of life among frontline nurses in emergency departments during the COVID-19 outbreak

“…All these factors could substantially increase the risk of depression. Similar to previous findings ( Li et al., 2017 ; Wang et al., 2020 ), current smoking was significantly associated with higher risk depression in this study. ED nurses had high-pressure jobs in clinical settings, and some of them may find smoking immediately relaxing despite of its long-term harmful effects.…”

Association between lower estimated premorbid intelligence quotient and smoking behavior in patients with schizophrenia

“…The smokers in the patient group showed higher HSCL scores, suggesting more severe distress symptoms. This is in line with a study that reports higher Symptom Checklist-90 scores, a measure of psychiatric symptoms, were observed in patients with schizophrenia who were smokers ( Li et al, 2017 ). In contrast, PANSS scores were not different between the smoker and non-smoker groups; this finding was inconsistent with those of other studies showing higher PANSS ( Xu et al, 2014 ) and positive ( Mallet et al, 2017 ) scores in patients with schizophrenia who were smokers.…”

Network analysis of the relationship between depressive symptoms, demographics, nutrition, quality of life and medical condition factors in the Osteoarthritis Initiative database cohort of elderly North-American adults with or at risk for osteoarthritis

“…Several lines of evidence have implicated significant associations between functioning and quality of life on the one hand and demographic, social, environmental, medical and psychiatric variables. For example, depressive symptoms have been associated with impaired functioning (Licht-Strunk et al, 2009), particularly in older populations (Ellervik et al, 2014), and with lower quality of life (Lin et al, 2014). Also quality of life appears to be associated with depression, ranging on a continuum from individuals without depression with higher quality of life and functioning to patients with severe depression and lower quality of life and functioning (Cotrena et al, 2016).…”