Quantitative Research Designs

QuantitativeResearch Designs

Quantitativeresearch design is known to the blue print of a chosen topic ofstudy. Research design defines the type of study, which includedescriptive, correlative, semi- and experimental, meta-analysis, andquantitative review. The selected topic for the study on quantitativedesign is the Post-traumatic stress disorder. Two quantitativeresearch designs are selected to be used on the research topic:Meta-analysis and Quantitative review, which is selected from theAmerican Journal of Medicine and the Journal of Occupational Medicineand Toxicology respectively.

Fromthe American Journal of Medicine, the use of quantitativemeta-analysis on PTSD’s pathophysiology confirms involvement ofregional subsets to the fear-circuitry implicated on the disorder.Meta-analysis procedure is run on a patient to examine neuralactivity within and across the provocation and emotional-cognitivetasks in the PSTD (Roberts, 2005). Meta-analysis also involvesvariability in the naming of medial prefrontal conventions of cortexregions, in which activated regions are then listed on the table withboth their specific structural names (Woodward, 2005). Theappropriateness of this design is that it is generally interactive,inductive, and iterative.

Fromthe Journal of Occupational Medicine and Toxicology, quantitativereview as a research design, involves performed literature on anumber of studies on the study treatments, which targets PTSD inrelation to CA or complex PTSD. Complex PTSD draws a lot from theprevious design, meta-analysis, since it involve variables, forexample, effect size, recovery, effect size, and the rates ofimprovement (Hoberman, 2002). Limited evidence from this researchdesign, suggest that CBT treatments on PTSD, are predominantlyeffective, but do, more often, suffice to achieving satisfactory endresults, more so on complex PTSD population (The American Journal ofMedicine, 2006). The appropriateness of this design is that itimproves the quality of available information since it allows moredata to be collected.

Thereare ramifications when an inappropriate design is chosen for study.First, it leads to collection of wrong data about the chosen researchtopic under study. Wrong data means inappropriate handling of thetopic. Choosing inappropriate design means that the validity of theresearch topic could be jeopardized (JOMT, 2010). The validity isboth external and internal. Internal means that there will bedifferences in the experimental treatment and the overall outcome(Creswell, 2003). External validity means that there will betreatment generalization, thus loose of focus on specific topic ofstudy.

Finally,having studied the two research designs in regard to PTSD, thefollowing are other quantitative research designs, which include:

  • Quasi-Experimental

  • Experimental

  • Non-Experimental


Creswell, J. W. (2003). Research design: Qualitative,quantitative, and mixed method approaches. Thousand Oaks, Calif:Sage Publications.

Hoberman, S. (2002). Data modeler`s workbench: Tools andtechniques for analysis and design. New York: Wiley.

Journal of Occupational Medicine and Toxicology (2010).Post-Traumatic Stress Disorder. Journal of Occupational Medicineand Toxicology. Vol (2), p. 23-45

Roberts, A. R. (2005). Crisis intervention handbook: Assessment,treatment, and research. Oxford: Oxford University Press.

The American Journal of Medicine (2006). Posttraumatic StressDisorder: Clinical Features, Pathophysiology, and Treatment. TheOfficial Journal of the Alliance for Academic Internal Medicine.Vol119 (5), p. 383–390

Woodward, M. (2005). Epidemiology: Study design and data analysis.Boca Raton: Chapman &amp Hall/CRC.