Physically equivalent temperature and mental and behavioural disorders in Germany in 2009-2011

Area of Science:

• Environmental Health
• Psychiatry
• Biometeorology

Background:

• Investigated the link between weather patterns and hospital admissions for mental and behavioral disorders in Germany.
• Utilized national data to explore biometeorological influences on mental health.
• Examined recent trends in weather-related mental health admissions.

Purpose of the Study:

• To understand the relationship between weather conditions and hospital admissions for common mental and behavioral disorders.
• To identify specific weather parameters associated with increased mental health service utilization.
• To inform public health strategies regarding mental health resource allocation based on weather.

Main Methods:

• Ecological study design analyzing 10% of daily hospital admissions across Germany (2009-2011).
• Included over 5.2 million admissions, identifying F01-F51 disorders (ICD-10).
• Utilized daily weather data from 64 stations, calculating Physiologically Equivalent Temperature (PET) and employing regression analysis.

Main Results:

• Highest mental health admissions were generally observed in spring.
• Delirium and personality disorder admissions peaked at colder Physiologically Equivalent Temperatures (0°C and -10°C, respectively).
• Schizophrenia and sleep disorder admissions increased with PETs between 0°C and -10°C, while eating disorder admissions decreased above 10°C.

Conclusions:

• Colder weather conditions (PET < 10°C) may necessitate increased mental health resources.
• Specific mental health conditions show distinct associations with varying temperature equivalents.
• Findings suggest a need for weather-sensitive mental healthcare planning.