Journal of Andrology Email Content Delivery
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Gladen, B. C.
Right arrow Articles by Chapin, R. E.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Gladen, B. C.
Right arrow Articles by Chapin, R. E.

Journal of Andrology, Vol 12, Issue 2 89-97, Copyright © 1991 by The American Society of Andrology

JOURNAL ARTICLE

Issues in the statistical analysis of sperm motion data derived from computer-assisted systems

B. C. Gladen, J. Williams and R. E. Chapin
Statistics and Biomathematics Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709.

Computer-assisted sperm motion measurements present certain features that must be accounted for in statistical analyses. Some are specific to this type of data, whereas others are standard considerations. For example, the measurement of multiple sperm from individuals creates correlations that must be accounted for if each sperm's measurement is used, and unequal variances may arise that need to be addressed if an average measurement from the individual is used. Also, the limitations on the ranges of some measurements create discrepancies between observed and actual means and may make treatment-related effects more difficult to detect--a circumstance that has an impact on study design. When variables that are truly continuous are measured in a discrete fashion, odd effects may arise and care is needed. Other considerations, such as the shapes of distributions and correlations among various measurements, should also be examined. Attention to these details of statistical analysis are vital to proper interpretation of data.


This article has been cited by other articles:


Home page
 J AndrolHome page
R. P. Amann and D. F. Katz
Reflections on CASA After 25 Years
J Androl, May 1, 2004; 25(3): 317 - 325.
[Full Text] [PDF]

Home page
 Biol. Reprod.Home page
S. B. DuTeaux, T. Berger, R. A. Hess, B. L. Sartini, and M. G. Miller
Male Reproductive Toxicity of Trichloroethylene: Sperm Protein Oxidation and Decreased Fertilizing Ability
Biol Reprod, May 1, 2004; 70(5): 1518 - 1526.
[Abstract] [Full Text] [PDF]

Home page
 Hum ReprodHome page
A. M. Cancel, D. Lobdell, P. Mendola, and S. D. Perreault
Objective evaluation of hyperactivated motility in rat spermatozoa using computer-assisted sperm analysis
Hum. Reprod., June 1, 2000; 15(6): 1322 - 1328.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1991 by The American Society of Andrology.