Impact of early onset of chronic physical multimorbidities on schizophrenia spectrum disorder treatment outcome

Abstract

Introduction Despite of the heightened risks and burdens of physical comorbidities across the entire schizophrenia spectrum disorders (SSD), relatively little is known about physical multimorbidity (CPM) in this population. The study’s main objective was to explore the differences in the CPM prevalence between SSD patients and the general population (GEP). Objectives The primary outcome was to explore the difference in CPM prevalence in the younger SSD and GEP groups (<35 years).The secondary outcome was the number of psychiatric readmissions. Methods This nested cross-sectional study enrolled 343 SSD patients and 620 GEP participants. Results Younger SSD patients had more than three-fold higher odds for CPM than GEP. We also demonstrated an association between the presence of CPM and the number of psychiatric admissions in the SSD population independently of possible confounders. We did not observe significant interaction of CPM and age in the prediction of clozapine use. Younger women with SSD had statistically significant, almost four-fold higher odds of CPM than women from GEP. Conclusions This study suggests that women with SSD are at increased physical comorbidity risk compared to men, particularly early in the course of psychiatric illness. Our results highlight the importance of addressing physical health from the first contact with a mental health service to preserve general health, and provide the best possible treatment outcome. Treatment of SSD must be customized to meet the needs of patients with different physical multimorbidity patterns. Disclosure No significant relationships.

Keywords

• Schizophrenia spectrum disorders
• multimorbidity
• physical comorbidities
• rehospitalisation