National patterns in antidepressant medication treatment.

Area of Science:

• Pharmacology
• Public Health
• Epidemiology

Background:

• Antidepressants are the most frequently prescribed medications in the U.S.
• Understanding trends in antidepressant prescription is crucial for public health.

Purpose of the Study:

• To compare sociodemographic and clinical patterns of antidepressant medication treatment in the U.S. between 1996 and 2005.
• To identify changes in antidepressant use across different populations and treatment modalities.

Main Methods:

• Analysis of U.S. Medical Expenditure Panel Survey data from 1996 and 2005.
• Inclusion of respondents aged 6+ who received at least one antidepressant prescription.
• Statistical adjustment for sociodemographic factors and insurance status.

Main Results:

• Antidepressant treatment rate increased from 5.84% to 10.12% between 1996 and 2005, representing a rise from 13.3 to 27.0 million persons.
• Significant increases were observed across most sociodemographic groups, with the exception of African Americans.
• While depression treatment rates remained stable, the use of antipsychotic medications increased, and psychotherapy use declined among antidepressant users.

Conclusions:

• A broad expansion of antidepressant treatment occurred in the U.S. from 1996 to 2005.
• Persisting low rates of treatment were noted among racial and ethnic minorities.
• Treatment patterns shifted, with increased co-prescription of antipsychotics and decreased use of psychotherapy.