17: Case-Control Studies (Odds Ratios) - San José State . . . effects of low fruit and vegetable consumption on colon polyp risk There were 45 pairs in which the case but not the control reported low fruit veggie consumption There were 24 pairs in which the control but not the case reported low fruit veggie consumption 3 Based on this information, the odds ratio estimate 24 45 = = v u ˆOR = 1 88
7. 5: Odds ratio - Statistics LibreTexts Odds ratio is a measure of effect size for the association between two binary (yes no) variables It is the ratio of the odds of an event occurring in one group to the odds of the same event happening in another group The odds ratio (OR) is a way to quantify the strength of association between one condition and another
The most famous military victories achieved against all odds Few wars were as bitter and brutal as the Hundred Years’ War between France and Britain There are many reasons why it lasted (more than) 100 years One of the most famous battles of the war came at Agincourt, a force of 6,000 English longbowmen completely routed a superior (in numbers) force of 30,000 French heavy infantry and cavalry
Measuring dichotomous outcomes using risk ratios, odds ratios . . . The RD can be helpful when working out the “real world” implications of choosing one intervention rather than another For example, the knowledge that procedure X is likely to prevent readmission for 25 out of every 100 patients compared to procedure Y can help clinicans decide which procedure to implement
Jaws Quotes and Analysis - GradeSaver The first really good look at the shark in Jaws immediately precedes the one line of dialogue from the movie to make it into the American Film Institute’s list of the 100 most memorable quotes from the first 100 years of American movies, ranking at 35 The most interesting thing about one of the most famous and oft-quoted and oft-parodied
A Most Odd Ratio: : Interpreting and Describing Odds Ratios Confusion about the meaning of odds leads many authors and readers of scientific articles to misinterpret ORs from cross-sectional and longitudinal studies to mean the same thing as RRs 2 For instance, a report may incorrectly conclude that a risk factor “doubled the risk (OR=2 0)” for an adverse outcome, or that people in one group were