Suppose that a cohort study of body mass index and coronary heart disease (CHD) was undertaken. Participants were classified as having either a high or normal body mass index. Because age is associated with both body mass index and risk of CHD, age was considered a potential confounder and the age of each participant was recorded. The following data were gathered from the study participants: Normal Body Mass Index High Body Mass Index
DISEASE STATUS AGE
Young Old DISEASE STATUS AGE
Young Old
Developed CHD 18 65 Developed CHD 20 200
Did Not Develop CHD 6982 2935 Did Not Develop CHD 3980 5800
Total 7000 3000 Total 4000 6000

A. Set up the two by two to evaluate the crude association between body mass index and CHD and calculate the crude risk ratio.
B. Set up the two by two tables to evaluate the relationship between body mass index and CHD stratified by age. Calculate the risk ratios separately for the young and old participants.
C. Is age a confounder in this study?
D. Is age an effect modifier in this study?
E. If age is an effect modifier, describe how age affects the ratio measure of comparison between body mass index and CHD risk

Ron and abdul disagree about whose turn it is to drive. which statement could ron make to best take ownership of his feelings?

{20 points} hello. for my p. e. class i need to interview people about at health and wellness. so answer the questions below. interviewee name: age: gender: job: date and time of interview: 1. what are some major health concerns that you have? 2. are there ways that you know you can monitor and prevent these health concerns (or other concerns like obesity)? 3. how do family members influence your health? if you need to find out more about a specific health issue, what do you do? be specific. (don’t let them say “look on the internet”, because we have already learned that not everything on the internet is reliable! they should tell you a specific site if they use the internet as a source.) 4. what do you think is the biggest health concern facing our country? 5. what are some things that you do to monitor your health? 6. how would you get the word out about this major health concern? 7. how do you think the media influences what concerns we have for our health? 8. what are some future goals involving your health and well being? 9. why is it important to monitor your health, specifically to you? 10. and what influences you stay healthy?

What is the main goal of recommended dietary allowances (rdas)? to inspect school cafeterias across the united states to regulate foods sold at supermarkets and farmers' markets to investigate claims of tainted food being served in restaurants to indicate daily nutrient requirements