Overview of Statistical Analysis

Authors
Affiliations

Nathaniel Yomogida, B.S., SPT

Doctor of Physical Therapy

B.S. in Kinesiology

Chloë Kerstein, B.S., SPT

Doctor of Physical Therapy

B.A. in Neuroscience

Why should you care about statistical analysis?

A study’s results are useless if the wrong data analysis test is used Allam (2017)1 found that only 24.5% of studies performed for MD doctoral dissertations at the National Cancer Institute (NCI) used improper data tests1

  • Most of results were misinterpreted (82.3%)1
  • Misuse of statistical terminology (77.4%)1

Comparing Tests

T-Test

T-Test

  • Determines difference from in mean values between 2 groups

Mann-Whitney U Test

See Mann-Whitney U Test

  • Difference in Rank sum
  • Does not need to be normally distributed
  • 2x independent groups

References

1.
Allam RM, Noaman MK, Moneer MM, Elattar IA. Assessment of Statistical Methodologies and Pitfalls of Dissertations Carried Out at National Cancer Institute, Cairo University. Asian Pacific journal of cancer prevention: APJCP. 2017;18(1):231-237. doi:10.22034/APJCP.2017.18.1.231

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