1 / 6

DISCUSSION Biost / Epi 536

December 1, 2009. DISCUSSION Biost / Epi 536. Quiz: Week 9. Logit(p) = -1.2 + adjustment vars + 0.02X alc X D = 1 if esophageal cancer; 0 otherwise X alc = g/day total alcohol consumption β is significant

peta
Download Presentation

DISCUSSION Biost / Epi 536

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. December 1, 2009 DISCUSSIONBiost/Epi536

  2. Quiz: Week 9 • Logit(p) = -1.2 + adjustment vars + 0.02Xalc • XD = 1 if esophageal cancer; 0 otherwise • Xalc = g/day total alcohol consumption • β is significant The inclusion of one control with 400 g alcohol/day decreases the β coefficient by 0.02. The observation is correct. Should this data be included in the estimation of β?

  3. Quiz: Week 9 • β coefficient with observation: 0.02 • β coefficient without observation: 0.04

  4. Homework 10: Interaction Linear: Quadratic:

  5. Homework 11 • Question 1: • E: Pre-conceptional multivitamin use • D: Birth defects • H: Family history of birth defects (including prior pregnancy of mother) • G: Unobserved genetic factors

  6. Homework 11 • Question 2: • E: Antihistamine use • D: Asthma • A: Air pollution • B: Gender • C: Bronchial reactivity • G: schools kept children indoors on high pollution days

More Related