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Psychiatr Serv. 2009 May;60(5):611-6. doi: 10.1176/appi.ps.60.5.611.

Trends in antidepressant utilization from 2001 to 2004.

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  • 1Department of Health Services Research, Management, and Policy, College of Public Health and Health Professions, University of Florida, 101 S. Newell Dr., Room 4151, P.O. Box 100195, Gainesville, FL 32611-0195, USA. jharman@phhp.ufl.edu

Abstract

OBJECTIVE:

This study investigated whether the trend of increasing rates of antidepressant use in the 1990s continued into 2000-2004. Antidepressant treatment rates were examined by age group and by the class of antidepressant in order to identify whether any observed trends were being driven by a particular age group of patients or class of medication.

METHODS:

Secondary analysis was performed on data from the 2000-2004 Medical Panel Expenditure Surveys, a nationally representative survey of U.S. households, to examine trends in antidepressant use by age group and medication class in the total sample (N=166,435). Trends in the rates of antidepressant use among individuals with self-reported depression (N=10,959) and self-reported anxiety disorders without comorbid depression (N=6,899) were also examined.

RESULTS:

Antidepressant use increased among all Americans, from 6.6% in 2000 to 8.1% in 2004 (p<.001). Rates of antidepressant use by individuals with anxiety disorders without comorbid depression increased from 30.8% in 2000 to 39.0% in 2002, before declining to 33.2% in 2004. However, antidepressant use decreased among individuals with self-reported depression, from 63.1% in 2000 to 56.7% in 2004 (p<.001). This downward trend in antidepressant use was largely driven by a decrease in use of selective serotonin reuptake inhibitors, especially among children and middle-aged adults with depression. Rates of adequate antidepressant treatment (defined as receiving at least four antidepressant prescriptions at the minimum adequate daily dosage) peaked in 2002 (36.9%), and there was a significant decline by 2004 (31.7%) (p=.003).

CONCLUSIONS:

After years of increased use of antidepressant therapy to treat depression, a trend reversal in the beginning of the 21st century was observed, including decreasing rates of adequate antidepressant treatment. This downward trend preceded the black-box warnings included on antidepressant labels beginning in 2004.

PMID:
19411347
DOI:
10.1176/appi.ps.60.5.611
[PubMed - indexed for MEDLINE]
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