Statistics in Research Articles

Research articles are a common place where the material in this module is applied.

Common Research Article Structure
AbstractA paragraph-long summary of the research including the context, research questions, methods, and findings.
IntroductionProvides background on the research topic including existing research.
MethodsOutlines the study participants, recruitment methods, data collection, and statistical analysis.
ResultsProvides the findings of the statistical analysis and presents descriptive then statistical data and findings of significance.
DiscussionThe key findings, the meaning of the findings in the larger research picture, and areas for further research. Limitations of the research are often included here.

The bulk of the statistical analysis and findings are in the results section of the article. Click here for an example of a research article.

Using a simplified example of the relationship between scores on a scale measuring perception of risk between pre- and posttest among youth in the fictional Arizona Youth Program, here is what a table of results could look like:

 Pretest
(N=100)
Posttest
(N=100)
P
Score
(1 = no risk, 2 = a little risk, 3 = some risk, 4 = a lot of risk)
 
Item 12.73.40.03*
Item 22.83.20.065
Item 33.03.70.04*
Item 42.43.00.07
Item 52.22.90.02*
*Indicates significance at the P <0.05 level

In the body of the article or report, the data would indicate the type of test used (a paired t-test, for example), the p-value, and the effect size (if calculated). The p-value in the above table shows you the relationship between the pre- and posttest. There was statistically significant improvement in three of the five items: items 1, 3, and 5. Information on the statistical analysis used, measurement tool (survey), and effect size would also be contained in a report.