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RStats Statistics and Research Camp 2014. Meta-Analysis Session 4. Melissa Maier, Ph.D. Assistant Professor Communication. Rationale. Narrative Review Meta-Analysis: Mathematical Reduce Type II error Correct statistical artifacts Test possible moderator variables

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rstats statistics and research camp 2014

RStats Statistics and Research Camp 2014

Meta-Analysis

Session 4

Melissa Maier, Ph.D.

Assistant Professor

Communication

rationale
Rationale
  • Narrative Review
  • Meta-Analysis:
    • Mathematical
      • Reduce Type II error
      • Correct statistical artifacts
      • Test possible moderator variables
      • Evaluate theoretical arguments
    • Practical
method
Method
  • Construct database of all relevant research
  • Analyze articles to determine (and correct):
    • Sample size
    • Effect size
    • Moderators
  • Calculate average effect size
  • Test for homogeneity
  • If heterogenous, test for moderators and outliers
calculate ave effect
Calculate Ave. Effect

Are female same-sex relationships more intimate than male same-sex relationships?

write up
Write-up
  • Justification for review
  • Methodology
    • Describe search methods
    • Code possible moderators (or model)
    • Describe statistical procedures
  • Results
    • Average effect
    • Number of studies, k
    • Overall combined sample size, N
    • Measure of variability
    • Evaluation of homogeneity
    • Measure of significance of average effect
  • Discussion
limitations of meta analysis
Limitations of Meta-Analysis
  • Contextual restrictions
  • Unequal value of claims
  • Ethnographic trap
  • Multiplicity of interpretation
  • Misapplication of the level of analysis
supplemental resources
Supplemental Resources

Burrell, N.A., Allen, M., Gayle, B.M., & Preiss, R.W. (Eds). (2014). Managing interpersonal conflict: Advances through meta-analysis. New York: Routledge.

Hunter, J.E., & Schmidt, F.L. (1990). Methods of meta-analysis: Correcting error and bias in research findings. Newbury Park, CA: Sage.

Hunter, J.E., & Schmidt, F.L. (2002). Methods of meta-analysis: Correcting error and bias in research findings (2nd ed.). Thousand Oaks, CA: Sage.

Hunter, J.E., Schmidt, F.L., & Jackson, G.B. (1982).Meta-analysis: Cumulating research findings across studies. London: Sage.

Lipsey, M.W., & Wilson, D.B. (2001). Practical meta-analysis. Thousand Oaks, CA: Sage.

Preiss, R., & Allen, M. (1995). Understanding and using meta-analysis. Evaluation & the Health Professions, 18, 315-335.

Preiss, R., & Allen, M. (2001). Understanding and using meta-analysis. In R. Preiss, B. Gayle, N. Burrell, M. Allen, & J. Bryant (Eds.), Mass media effects research: Advances through meta-analysis (pp. 15-30). Mahwah, NJ: Lawrence Erlbaum.

The Meta-Analysis Calculator:

http://www.lyonsmorris.com/ma1/