On last.fm: Exclusive SXSW 2009 interviews
BNET Business Network:
BNET
TechRepublic
ZDNet

FREE Registration is required

Overview:

Effect modification occurs in biomedical research when a measure of statistical association between an exposure and a health outcome, as represented on some specific scale, differs according to the levels of a third variable - the effect modifier. The heterogeneity of a measure of association across the levels of a modifying variable has an importance that might be statistical, epidemiologic, and/ or biologic. Effect modification can be tested and graphed in numerous ways with SAS statistical software. This paper provides code for six different ways of investigating effect modification, primarily using PROC GENMOD, and two ways of graphing statistical interactions using the GPLOT and (via ActiveX Control) the G3D procedures.

(Is this item miscategorized? Does it need more tags? Let us know.)

Format:PDFSize:90 KB
Date:Feb 2006
Pages:10

People who downloaded this item also downloaded

Tools & Templates Average Selling Price Analysis
White Paper Pricing And Revenue Optimization Intelligence
White Paper Optimal Customized Pricing In Competitive Settings
White Paper An Overview of Pricing Models for Revenue Management
Case Study Case Study: Pricing

Top results from Programming Languages

White Paper Surviving and Thriving in the Customer-Driven Age
White Paper Designing High Availability for Internet Information Services
White Paper Citizants: Bringing IT In-House
White Paper Supporting Employees Anytime, Anywhere
White Paper The Pursuit of a Standardized Solution for Secure Enterprise RBAC

» View all Programming Languages listings

advertisement

White Papers, Webcasts, and Resources

Featured Training Courses

advertisement
Click Here

SmartPlanet

  • Thought-provoking progressive ideas on diverse topics that intersect with technology, business, and life, and matter to the world at large. Visit SmartPlanet
  • More from IBM
  • Innovate your business' process model, play against the market, compete against others on our scoreboards and WIN! Try INNOV8 2.0: A BPM Simulator
  • Enabling Real-World Business Transformation through IBM Service Management Read the EMA Analyst Report
Click Here

Returning users: Log In Here!

Already registered on BNET, TechRepublic, or ZDNet? Simply log in.

Free Membership: Sign Up Now!

Sign up for a free membership today and get instant and unlimited access to one of the largest databases of white papers, webcasts, and casestudies anywhere. Your FREE membership allows you to:

  • Download an unlimited amount of content, including classic and current white papers, case studies, webcasts and more
  • Track content on your chosen topics of interest
  • Receive targeted email alerts when your favorite content is added
  • Save content for future reading
  • Receive our member newsletter

When you register to access this library, you allow us to share your information with companies that produce products or services featured in the library--so that such companies may contact you with information and offers regarding their products and services. This enables us to keep the library a free service. As a library registrant, you will receive a complimentary subscription to the ZDNet white paper newsletter and e-mail Must-Read News Alerts. You can unsubscribe from these at any time. By clicking the Sign up button, you indicate that you agree to our Terms and Conditions and have read and understand our Privacy Policy (updated).