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The epidemiology of antidepressant use in South Korea: Does short-term antidepressant use affect the relapse and recurrence of depressive episodes?

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  • Min Ji Kim
  • Namwoo Kim
  • Daun Shin
  • Sang Jin Rhee
  • C Hyung Keun Park
  • Hyeyoung Kim
  • Sung Joon Cho
  • Jae Won Lee
  • Eun Young Kim
  • Boram Yang
  • Yong Min Ahn

Abstract

Background: The duration of antidepressant use affects the treatment of depression. Using the National Health Insurance database, which covers almost the entire national population, we verified the factors associated with the inadequate short-term use of initially prescribed antidepressants and their effects on the relapse and recurrence of depressive episodes. Methods: There were 752,190 patients included who had been newly prescribed antidepressants in 2012 with the diagnosis of depressive disorder. They were followed-up until December 31, 2015. They were classified as short-term and long-term antidepressant users depending on whether they used a specific initial antidepressant for at least four weeks. Sociodemographic, clinical, and medical utilization factors affecting the duration of antidepressant use were investigated. We also identified whether the duration of antidepressant use affected the risk of relapse and recurrence, which was defined by the restarting of antidepressants. Results: Initial antidepressants were taken for less than 28 days by 458,057 (60.84%) patients. Tricyclic antidepressants were used as the initial antidepressant more frequently than selective serotonin reuptake inhibitors (64.5% versus 19.3%). The type of initial antidepressant, polypharmacy, psychiatric and medical comorbidities, type of insurance coverage, and type of medical institution visited were associated with short-term use. Short-term use marginally increased the risk of relapse and recurrence of depressive episodes (Hazard ratio: 1.06, 95% confidence intervals 1.048–1.075). Conclusions: Short-term antidepressant use is widespread in Korea, and assessment in various aspects are necessary to set proper treatment plans.

Suggested Citation

  • Min Ji Kim & Namwoo Kim & Daun Shin & Sang Jin Rhee & C Hyung Keun Park & Hyeyoung Kim & Sung Joon Cho & Jae Won Lee & Eun Young Kim & Boram Yang & Yong Min Ahn, 2019. "The epidemiology of antidepressant use in South Korea: Does short-term antidepressant use affect the relapse and recurrence of depressive episodes?," PLOS ONE, Public Library of Science, vol. 14(9), pages 1-14, September.
  • Handle: RePEc:plo:pone00:0222791
    DOI: 10.1371/journal.pone.0222791
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    References listed on IDEAS

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