Factors explaining the use of psychiatric services by general practices

Area of Science:

• Psychiatry
• General Practice
• Health Services Research

Background:

• General practitioner referral rates to hospital services exhibit significant variation (up to 25-fold).
• Previous research has largely overlooked psychiatric patients and referral rates.
• Understanding factors influencing mental health service utilization is crucial for equitable healthcare delivery.

Purpose of the Study:

• To investigate the impact of population characteristics, general practice factors, and mental health service provision on the utilization of specialist mental health services.
• To identify key determinants of variation in mental health service use among general practices.

Main Methods:

• Cross-sectional analysis of computerized clinical records for patients aged 16-64 over two years.
• Study included 23 general practices in Huntingdon Health District with a total population of 87,643.
• Outcome measures included age-standardized utilization ratios correlated with morbidity, deprivation, community mental health team (CMHT) provision, and prescribing patterns.

Main Results:

• Variation in mental health service use between general practices was less pronounced than for other secondary care services.
• Three factors explained 60.8% of the variance: female long-term limiting illness index, CMHT use, and hypnotic prescribing rates.
• Higher hypnotic prescribing was associated with lower mental health service utilization.

Conclusions:

• Population morbidity and mental health service factors significantly explain variations in mental health service utilization across general practices.
• Further research is needed to validate these findings and elucidate the mechanisms behind the influence of team factors and prescribing on utilization.
• Examining population, practice, and specialist service factors is essential for understanding variations in secondary care use.