Short-term ozone exposure and schizophrenia hospitalization risk: temperature modifying effect and greenspace...

Area of Science:

• Environmental Health
• Psychiatry
• Epidemiology

Background:

• Limited research exists on the link between ozone (O3) pollution and schizophrenia (SCZ) hospitalizations.
• The influence of temperature and greenness on this association requires further investigation.

Purpose of the Study:

• To examine the association between O3 pollution and SCZ hospitalizations.
• To assess the modifying effects of temperature and residential greenspace on this relationship.

Main Methods:

• A time-stratified case-crossover study design was employed.
• Data from 160,551 SCZ hospitalizations in Anhui Province, China (2017-2020) were analyzed.
• Conditional logistic regression and restricted cubic splines were used to model the associations.

Main Results:

• O3 exposure was associated with a 3.9% increase in SCZ hospitalization risk per 10 μg/m³ rise in O3 under high temperatures (OR=1.039).
• This adverse effect was more pronounced in individuals aged 45 years and older.
• Residential greenspace demonstrated a significant mitigating effect on O3-related SCZ hospitalizations.

Conclusions:

• Ozone pollution poses a risk to individuals with schizophrenia, particularly under warming climate conditions.
• Greenspace can serve as a protective factor, mitigating the adverse mental health impacts of air pollution.
• Public health strategies should consider environmental factors and urban greening for schizophrenia prevention and management.