Comparative Outcomes of Clozapine Therapy in Early versus Late Initiators in Patients with Treatment-Resistant Schizophrenia

Authors

  • Asad Ullah Jan Departments of Psychiatry, Combined Military Hospital Nowshera /National University of Medical Sciences (NUMS) Pakistan
  • Sajid Rahim Departments of Psychiatry, Combined Military Hospital Peshawar /National University of Medical Sciences (NUMS) Pakistan

DOI:

https://doi.org/10.51253/pafmj.v75i6.12071

Keywords:

Clozapine Initiation, Initiators, Schizophrenia, Treatment Resistant Schizophrenia.

Abstract

Objective: To compare the outcomes of clozapine treatment in early initiators vs late initiators in patients with treatment-resistant schizophrenia

Study Design:  Quasi-experimental study

Place and Duration of Study: Departments of Psychiatry Combined Military Hospital Peshawar and Combined Military Hospital Nowshera, Pakistan, from Jan 2023 to Mar 2024.

Methodology: The study included 103 patients with treatment-resistant schizophrenia, diagnosed by going over the past history and record, naive to clozapine, categorized into early (Group-A) and late (Group-B) initiators based on whether they started treatment within or after four years of diagnosis. Data was collected using a semi-structured questionnaire and Positive and Negative Syndrome Scale (PANSS) scores, with treatment efficacy evaluated via changes in these scores after three months using an independent t-test.

Results: Out of 103 patients 78(75.7%) were male and 25(24.3%) were female. The mean age of the participants was 31.49±9.06 years. Comparison of post-treatment PANSS scores between the two groups indicated a significant difference (p<0.001), suggesting that the timing of clozapine initiation impacts treatment outcomes.

Conclusion: Starting clozapine earlier in the course of illness is associated with improvement in symptoms

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References

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Published

31-12-2025

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Section

Original Articles

How to Cite

1.
Jan AU, Rahim S. Comparative Outcomes of Clozapine Therapy in Early versus Late Initiators in Patients with Treatment-Resistant Schizophrenia. Pak Armed Forces Med J [Internet]. 2025 Dec. 31 [cited 2026 Jan. 2];75(6):1163-7. Available from: https://pafmj.org/PAFMJ/article/view/12071