Delaware Chapter, ASA Dinner Meeting: November 2003 Speaker: Timothy W.Victor CNS Epidemiology and Disease Modeling AstraZeneca LP   Title: Measurement of Change Abstract: Measuring the magnitude of change in an attribute due to an intervention is the focus of most clinical trials. The "change from baseline" strategy is often employed, whereby scores are formed by substracting pre-test scores from post-test scores, to measure the effect of intervention. Although the unsuitability of such scores has long been discussed, they are still commonly used, even by some otherwise sophisticated investigators. Several strategies for analyzing change will be presented and discussed. Finally, the interpretation of clinical trial data and the subsequent decisions thereof shall be explained from the perspective of measurement and statistical conclusion validity.   Date: Thursday, November 20, 2003   Time: Social hour -- 6:00 pm Dinner -- 6:30 pm Speaker -- 7:15 pm   Place: Newark Holiday Inn Oliver's Restaurant map   Menu: Appetizer: Fruit Cup Salad: Caesar salad Entree: Chicken Medallions & Vegetable Marsala Dessert: Pie Slices   Cost: $25 for members, $15 for students ($5 for talk only)   Reservations:  Lidia Rejto by Tuesday, November 18, 2003. Phone: 302-831-8034 Fax: 302-831-6243 Email: Lidia Rejto.   If you desire a vegetarian meal, please so indicate in your RSVP. Please note: Be sure to RSVP by this date, to assure a meal is reserved for you.   Return to Delaware Chapter ASA home page.