Name N6208 Assignment 11 Chapter 12: Logistic Regression A. What is the logistic regression equation for predicting the probability of having a tubal ligation, based on information shown in Figure 12.6 (page 322)? Variables in the Equation 95% CI for EXP (B) B 1a .277 S.E. 0.25 Wald 118.522 df 1 Sig .000 Exp (B) 1.320 Lower 1.255 Upper 1.387 0.74 .006 .000 .236 .201 .090 .000 .000 1.065 1.088 .104 .106 .089 .212 1 2 1 1 1 1 1.077 .133 .179 .341 -4.087 180.240 2.885 1.634 2.870 14.573 370.165 1.142 1.196 1.406 .017 .932 .972 1.180 1.401 1.472 1.674 Step Births Age edstat Edstat(1) Edstat(2) Chdisabl Constant B. Based on either your clinical knowledge or on a brief literature search, what variable would you recommend adding to improve the prediction of a woman's decision to have a tubal ligation? How would you measure or construct that variable? The following questions are based on table 1. Table 1. Meta-analysis of the Association between diabetes and asthma Cardwell, C.R., Shields, M.D., Carson, D.J., & Patterson, C.C. (2003). A meta-Analysis of the Association Between Childhood Type 1 Diabetes and Atopic Disease. Diabetes Care, 26, 2568-2574. (Note: There is a typo in Table 1 for the Rosenbauer result. The OR is reported as 1.27, 95% CI 0.59, 0.96 and this is impossible. From a visual inspection, it looks like the upper limit should be 2.96, not 0.96.) C. From table 1, which articles reported significant results? List the name of the author as appeared in table 1, the OR, 95% CI, and the direction indicating lower risk or higher risk of asthma among patients with diabetes. D. For the study by Douek, how many of the sample had diabetes? How many did not have diabetes (control)? What is the total N? E. For the study by Douek: a. What was the prevalence of asthma among people with diabetes? b. What was the prevalence of asthma among the controls? c. What was the RR? (you need to calculate the RR) d. Interpret the results based on the reported percentages and OR F. Overall, how many subjects with diabetes were included in all of the 23 studies? Among them, how many had asthma? How many subjects without diabetes were included all the studies? Among them, how many had asthma? G. What were the overall OR and 95% CI? Was the result significant