Korean J Schizophr Res.  2019 Oct;22(2):42-50. 10.16946/kjsr.2019.22.2.42.

Clinical Characteristics, Drug Adherence to Antipsychotics and Medical Use Trends in Patients First Diagnosed with Psychotic Disorder: A Preliminary Study

• Heo JU
• Kim DW
• Oh ST
• Choi WJ
• Park J

• KMID: 2462051
• DOI: http://doi.org/10.16946/kjsr.2019.22.2.42

Abstract

OBJECTIVES
In this preliminary study, we investigated the clinical characteristics of patients who were first diagnosed with psychotic disorder and explored the impact of the adherence to antipsychotics on long-term medical use.
METHODS
All national health insurance claims related to psychotic disorders including gender, age, income, and drug compliance, from January 1, 2008 to December 31, 2015, were examined. With trend test using Medication Possession Ratio (MPR), we compared the medical use between the compliant group (MRP≥0.8) and the comparative non-compliant group (0.2≤MPR<0.8).
RESULTS
Among 28,095 participants in total, 16,239 patients (57.8%) were diagnosed as schizophrenia; the 30s were the most common (n=7,151, 25.5%). Drug compliance was generally low regardless of the diagnosis and was the lowest among 20s with the 40-60% range of income. The compliant group showed lower psychiatric and medical use than the comparative group in the following years (p<0.0001).
CONCLUSION
These findings suggest that patients in the 20s and 30s with the 40-60% range of income, who are diagnosed with schizophrenia at the first psychiatric visit, may need more clinical and political attention. The results also emphasize the importance of initial drug adherence to antipsychotics in reducing long-term psychiatric costs.

Keyword

Antipsychotics; Drug adherence; Medical use; Psychotic disorder

MeSH Terms

Antipsychotic Agents*
Compliance
Diagnosis
Humans
National Health Programs
Psychotic Disorders*
Schizophrenia
Antipsychotic Agents