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Treatment Initiation for New Episodes of Depression in Primary Care Settings

  • Beth Waitzfelder
  • Christine Stewart
  • Karen J. Coleman
  • Rebecca Rossom
  • Brian K. Ahmedani
  • Arne Beck
  • John E. Zeber
  • Yihe G. Daida
  • Connie Trinacty
  • Samuel Hubley
  • Gregory E. Simon
Original Research

Abstract

Background

Depression is prevalent and costly, but despite effective treatments, is often untreated. Recent efforts to improve depression care have focused on primary care settings. Disparities in treatment initiation for depression have been reported, with fewer minority and older individuals starting treatment.

Objective

To describe patient characteristics associated with depression treatment initiation and treatment choice (antidepressant medications or psychotherapy) among patients newly diagnosed with depression in primary care settings.

Design

A retrospective observational design was used to analyze electronic health record data.

Patients

A total of 241,251 adults newly diagnosed with depression in primary care settings among five health care systems from 2010 to 2013.

Main Measures

ICD-9 codes for depression, following a 365-day period with no depression diagnosis or treatment, were used to identify new depression episodes. Treatment initiation was defined as a completed psychotherapy visit or a filled prescription for antidepressant medication within 90 days of diagnosis. Depression severity was measured with Patient Health Questionnaire (PHQ-9) scores on the day of diagnosis.

Key Results

Overall, 35.7% of patients with newly diagnosed depression initiated treatment. The odds of treatment initiation among Asians, non-Hispanic blacks, and Hispanics were at least 30% lower than among non-Hispanic whites, controlling for all other variables. The odds of patients aged  ≥ 60 years starting treatment were half those of patients age 44 years and under. Treatment initiation increased with depression severity, but was only 53% among patients with a PHQ-9 score of ≥ 10. Among minority patients, psychotherapy was initiated significantly more often than medication.

Conclusions

Screening for depression in primary care is a positive step towards improving detection, treatment, and outcomes for depression. However, study results indicate that treatment initiation remains suboptimal, and disparities persist. A better understanding of patient factors, and particularly system-level factors, that influence treatment initiation is needed to inform efforts by heath care systems to improve depression treatment engagement and to reduce disparities.

KEY WORDS

depression primary care race and ethnicity disparities 

Notes

Acknowledgements

This study was supported by NIMH Cooperative Agreement U19MH092201.

Compliance with Ethical Standards

Conflict of Interest

Dr. Simon receives royalties from Wolters Kluwer for editing chapters of the UpToDate decision support system. In the last 3 years, he has received research grant support from Novartis Pharmaceuticals for research regarding suicidal behavior in psoriasis.

Dr. Daida receives research grant support from Gilead Sciences and Intercept Pharmaceuticals for research regarding hepatitis and fibrotic liver diseases, respectively. Research funds are received through the Henry Ford Health System (prime site for both studies).

All other authors declare that they do not have a conflict of interest.

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Copyright information

© Society of General Internal Medicine 2018

Authors and Affiliations

  • Beth Waitzfelder
    • 1
  • Christine Stewart
    • 2
  • Karen J. Coleman
    • 3
  • Rebecca Rossom
    • 4
  • Brian K. Ahmedani
    • 5
  • Arne Beck
    • 6
  • John E. Zeber
    • 7
  • Yihe G. Daida
    • 1
  • Connie Trinacty
    • 1
  • Samuel Hubley
    • 6
  • Gregory E. Simon
    • 2
  1. 1.Kaiser Permanente Center for Health Research – HawaiiHonoluluUSA
  2. 2.Kaiser Permanente Washington Health Research InstituteSeattleUSA
  3. 3.Department of Research and EvaluationKaiser Permanente Southern CaliforniaPasadenaUSA
  4. 4.HealthPartners InstituteMinneapolisUSA
  5. 5.Center for Health Policy & Health Services Research, Behavioral Health ServicesHenry Ford Health SystemDetroitUSA
  6. 6.Institute for Health ResearchKaiser Permanente ColoradoDenverUSA
  7. 7.Baylor Scott & White HealthCenter for Applied Health ResearchTempleUSA

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