Share Email Print

Proceedings Paper

Effect of experimental design on sample size
Author(s): Howard E. Rockette; Nancy A. Obuchowski; David Gur; Walter F. Good
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

An increasing practical problem in the evaluation of the accuracy of new imaging systems, as well as the effect of modifications in the display of current imaging systems, is the effort entailed in performing the necessary readings. Although some constraints are dictated by the specific evaluation being conducted, some aspects of the experiment can be determined by the investigator. These include, but are not limited to, the method used to select the cases (selected, stratified, or random) and whether continuous variables that are being evaluated (i.e., pixel size, brightness, contrast) are grouped into discrete categories. The selection of the experimental design has an impact on the sample size required to answer the study question and thus impacts on the cost and effort required to do the study.

Paper Details

Date Published: 1 July 1991
PDF: 8 pages
Proc. SPIE 1446, Medical Imaging V: PACS Design and Evaluation, (1 July 1991); doi: 10.1117/12.45282
Show Author Affiliations
Howard E. Rockette, Univ. of Pittsburgh (United States)
Nancy A. Obuchowski, Univ. of Pittsburgh (United States)
David Gur, Univ. of Pittsburgh (United States)
Walter F. Good, Univ. of Pittsburgh (United States)

Published in SPIE Proceedings Vol. 1446:
Medical Imaging V: PACS Design and Evaluation

© SPIE. Terms of Use
Back to Top