Safari File Edit View History Bookmarks Window Help C Q Tue May 14 6:18 AM chi2 = 0.7987 31 32 33 Test of homogeneity (B-D) chi2(1) = 0.07 Pr>chi2 = 0.7986 Test that combined odds ratio = 1: Mantel-Haenszel chi2(1) = 2.88 34 Pr>chi2 = 0. 0898 Based on the above cross-tabulation, the R output for the Mantel-Haenszel test is below. Quiz Information > Bres lowDayTest (x) Breslow-Day test on Homogeneity of Odds Ratios data: X X-squared = 0.065076, df = 1, p-value = 0. 7986 > mantelhaen . test (Q15$alcohol , Q15$smoke , Q15$marijuana, correct=FALSE) Mantel-Haenszel chi-squared test without continuity correction MAY 14 A DOCXSafari File Edit View History Bookmarks Window Help C Q Tue May 14 6:19 AM chi2 = 0. 0898 Based on the above cross-tabulation, the R output for the Mantel-Haenszel test is below. 22 23 24 > BreslowDayTest(x) Breslow-Day test on Homogeneity of Odds Ratios 25 26 27 data: x K-squared = 0.065076, df = 1, p-value = 0.7986 mantelhaen. test(Q15$alcohol , Q15$smoke , Q15$marijuana, correct=FALSE) 28 29 30 Mantel-Haenszel chi-squared test without continuity correction data: Q15$alcohol and Q15$smoke and Q15$marijuana Mantel-Haenszel X-squared = 2.8772, df = 1, p-value = 0.08984 31 32 33 alternative hypothesis: true common odds ratio is not equal to 1 95 percent confidence interval : 0. 9207721 3. 0400141 sample estimates: common odds ratio 34 1. 673069 Question 15 (1 point) Quiz Information From the above cross-tabulation, we can calculate the odds ratio representing the association between current alcohol use and current cigarette smoking among those who currently use marijuana and those who do not currently use marijuana, respectively. The results of the Breslow-Day test on homogeneity of odds ratios indicate Among those who currently use marijuana, the odds of current alcohol drinking among MAY 14 A "tv DOCXSafari File Edit View History Bookmarks Window Help C Q Tue May 14 6:19 AM ~ Q & TueMay14 6:19 AM eee M- 0 @ brightspace.nyu.edu M + m Quizzes - Biostatistics for Public Health, ... u Course Hero u Doc8.docx u Biostat_Final Exam.docx n Doc8.docx Final Exam N 02821 remaining X 1 e ya iy 19 | 20 | [ 21 From the above cross-tabulation, we can calculate the odds ratio representing the association v v v between current alcohol use and current cigarette smoking among those who currently use s marijuana and those who do not currently use marijuana, respectively. The results of the 22 23 24 Breslow-Day test on homogeneity of odds ratios indicate _____ v = R . i i Among those who currently use marijuana, the odds of current alcohol drinking among g ; ; those who currently smoke cigarettes is 1.84 times the odds of current alcohol drinking 7 7 7 among those who do not currently smoke cigarettes. = == Among those who currently use marijuana, the probability of current alcohol drinking 28 | | 29 || 30 among those who currently smoke cigarettes is 1.84 times the probability of current v v v alcohol drinking among those who do not currently smoke cigarettes. _ . The odds ratios representing the association between current alcohol use and current 3132 33 cigarette smoking among those who currently use marijuana and those who do not i i i currently use marijuana are not statistically different. - The odds ratios representing the association between current alcohol use and current - cigarette smoking among those who currently use marijuana and those who do not currently use marijuana are both greater than 1. o Quiz Infrmatior Question 16 (1 point) The results of the Mantel-Haenszel test indicate That there is NO relationship between current alcohol use and current cigarette use adjusting for marijuana use. L LS IGO0 A JLR N @ Safari File Edit View History Bookmarks Window Help @) T Q & TueMay14 6:19 AM eee M+ 0 @ brightspace.nyu.edu [I] =+ m Quizzes - Biostatistics for Public Health, ... u Course Hero u Doc8.docx u Biostat_Final Exam.docx n Doc8.docx S 0:28:18 remaining X Final Exam 19 || 20 || 21 Question 16 (1 point) vilvi|lv Lo L L The results of the Mantel-Haenszel test indicate 22 || 23| 24 That there is NO relationship between current alcohol use and current cigarette use v | v v adjusting for marijuana use. That current marijuana use is associated with current cigarette smoking adjusting for current alcohol drinking. v v v = That among those who do not currently use marijuana, current alcohol drinking and 28 || 29 |30 cigarette smoking is associated. | Y J v ) v That among those who do currently use marijuana, current alcohol drinking and current Y cigarette smoking is associated. 31| (32|33 v v v . UL Part V - Questions 17-19 34 Data Analysis One hundred males are selected for a study on factors related to high blood pressure. For each Quiz Information subject we record their Age (years), their Weight (pounds) and their Serum Cholesterol (mg/ml) and we measure their Systolic Blood Pressure (mmHg). To determine the relationship of Age, Weight and Cholesterol to Blood Pressure we estimated a linear regression model. Based on the results of this regression, answer the questions below. L Ll IOL d AU Safari File Edit View History Bookmarks Window Help C Q Tue May 14 6:19 AM