Research designs- an Overview

  • Pankajakshan Vijayanthi Indu Additional Professor in Psychiatry, Government Medical College, Kozhikode
  • K Vidhukumar Additional Professor in Psychiatry, Govt. Medical College, Ernakulam.
Keywords: design, research, qualitative, quantitative, translational, implementation


A research design is a systematic plan to study a scientific problem. The research problem determines the type of design. Research designs can be qualitative or quantitative; the latter can be experimental (interventional) and non-experimental (observational). Observational studies are further classified into descriptive (such as case reports, case series and cross-sectional studies) and analytical studies (like case-control and cohort studies). Experimental studies compare experimental groups exposed to different treatments or interventions. All these are briefly discussed along with systematic reviews, meta-analysis, qualitative research, basic sciences research, translational and implementation research.


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Column: Research Methods in Psychiatry