Original Research

Sampling bias in physiotherapy research

J. A. Hendry
South African Journal of Physiotherapy | Vol 42, No 1 | a822 | DOI: https://doi.org/10.4102/sajp.v42i1.822 | © 2018 J. A. Hendry | This work is licensed under CC Attribution 4.0
Submitted: 02 October 2018 | Published: 28 February 1986

About the author(s)

J. A. Hendry, Department of Physiotherapy, University of Stellenbosch, South Africa

Full Text:

PDF (118KB)

Abstract

In this article the difference between random error (due to sampling variability) and systematic error (or bias) is briefly illustrated. Major types of systematic error which occur due to errors in sampling are discussed briefly with reference to the following study designs: the randomized clinical trial, cohort analytical, cross-sectional, case control and before-after studies.


Keywords

No keywords available

Metrics

Total abstract views: 1287
Total article views: 792

 

Crossref Citations

1. Quadriceps Strength Training for Osteo-Arthritis of the Knee: A Literature Review and Analysis
Ray Marks
Physiotherapy  vol: 79  issue: 1  first page: 13  year: 1993  
doi: 10.1016/S0031-9406(10)60533-0