EXPORT CITATION

Chapter-09 Analyze Your Observations: Check Statistical Significance

BOOK TITLE: Biomedical Research Methodology

Author
1. Das Ranjan
2. Das PN
ISBN
9789350250174
DOI
10.5005/jp/books/11438_9
Edition
1/e
Publishing Year
2011
Pages
23
Author Affiliations
1. Lady Hardinge Medical College and Associated Hospitals, New Delhi, India
2. Delhi Institute of Rural Development, New Delhi, India
Chapter keywords
Analyze your observations: check statistical significance, Z test, Wilcoxon-mann-whitney tests, Student’s t test, Kruskal wallis test, Paired t test, Chi-square test, Anova f test, Mc Nemar’s test.

Abstract

Simultaneously with above, further statistical analysis of the research findings has to be done for ascertaining significance of any observed association. This aspect we have covered in Chapter 9, Analyze Your Observations: Check Statistical Significance. This chapter is unique in a way that it discusses in brief many of the currently used statistical techniques used in biomedical research. Among the parametric tests of statistical significance we have included the normal curve or Z test, student’s t test (for paired and nonpaired data sets) and analysis of variance (ANOVA). While, we have included the Wilcoxon-Mann-Whitney test, Wilcoxon Signed Rank test, Kruskal-Wallis test, Chi- square test, McNemar’s test, among the nonparametric tests. Significant weight-age has been given to the nonparametric tests owing to the fact that these are needed more frequently in biomedical research. All tests have been explained with the help of appropriate examples from the biomedical field.

© 2019 Jaypee Brothers Medical Publishers (P) LTD.   |   All Rights Reserved