About this paper

Appears in:
Pages: 4954-4961
Publication year: 2012
ISBN: 978-84-616-0763-1
ISSN: 2340-1095

Conference name: 5th International Conference of Education, Research and Innovation
Dates: 19-21 November, 2012
Location: Madrid, Spain

POWER ANALYSIS FOR SENSITIVITY ANALYSES OF OBSERVATIONAL STUDIES

E. Sztendur1, N. Diamond2

1Victoria University (AUSTRALIA)
2Monash University (AUSTRALIA)
The design of observational studies is just as important as the design of randomised controlled experiments. Many observational studies now use propensity scores to make the treatment and control groups comparable. Although propensity scores remove the effect of measured covariates, they do not remove bias due to unmeasured variables. An essential aspect of the analysis and reporting of an observational study is to carry out a sensitivity analysis which determines the magnitude of the bias that would be needed to alter the conclusions of the study.

This talk summarises an R package, ObsSensitivity, that assists researchers to determine the appropriate sample size for an observational study. The software tool is developed as an R Commander Plug-in, giving the advantages of R but with a convenient and easily learnt environment. Demonstration of the use of the software with examples of actual observational studies is given.
@InProceedings{SZTENDUR2012POW,
author = {Sztendur, E. and Diamond, N.},
title = {POWER ANALYSIS FOR SENSITIVITY ANALYSES OF OBSERVATIONAL STUDIES},
series = {5th International Conference of Education, Research and Innovation},
booktitle = {ICERI2012 Proceedings},
isbn = {978-84-616-0763-1},
issn = {2340-1095},
publisher = {IATED},
location = {Madrid, Spain},
month = {19-21 November, 2012},
year = {2012},
pages = {4954-4961}}
TY - CONF
AU - E. Sztendur AU - N. Diamond
TI - POWER ANALYSIS FOR SENSITIVITY ANALYSES OF OBSERVATIONAL STUDIES
SN - 978-84-616-0763-1/2340-1095
PY - 2012
Y1 - 19-21 November, 2012
CI - Madrid, Spain
JO - 5th International Conference of Education, Research and Innovation
JA - ICERI2012 Proceedings
SP - 4954
EP - 4961
ER -
E. Sztendur, N. Diamond (2012) POWER ANALYSIS FOR SENSITIVITY ANALYSES OF OBSERVATIONAL STUDIES, ICERI2012 Proceedings, pp. 4954-4961.
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