A study was conducted by the NIH (National Institute for Health) with a large population that examined smoking and the occurrence of lung cancer. In the duration of the study period, 1,800 smokers developed lung cancer. In the same period, 200 nonsmokers developed lung cancer. There were 241,800 current smokers and 478,000 nonsmokers in the total study population.   1.what type study ? Study design options: Ecological, Cross-sectional, Case Control, Prospective Cohort, Retrospective Cohort, Randomized Clinical Trial

Please answer this question What are the government and RT role during mass casualty.

A group of 156 heart attack patients who were regular smokers up to the time of their heart attacks were followed for ten years. Among them, 75 patients continued to smoke after their heart attacks and 81 quit after their heart attacks.  Of the 75 patients that continued smoking, 27 had a second heart attack during the ten years of follow-up, and of the patients who quit, 14 had a second heart attack during the 10 years of follow-up.    What is the risk ratio for the association between continued smoking and second heart attack? Round to two decimal places

share your opinion on the most significant barrier a clinical research professional may face in recruiting and retaining study subjects in a pandemic environment. identify a strategy that would effectively overcome the previously identified recruitment and retention barrier. Describe how you would implement the strategy as a clinical research coordinator considering local dynamics and the pandemic environment.

Is it possible to get “better” evidence from a case-control study than a cohort study? When could this happen?

Match the epidemiology study with the information that best corresponds with it. Generally provides the best, most controlled data Retrospective, and inclusive of those with disease Prospective, and focused on exposure status Provides limited means for testing of hypothesis Clinical Trial Cross Sectional Cohort Case Control

Comparing exposure histories of people with the disease and people without the disease isthe goal for what type of study design?A. Case seriesB. Case-controlC. CohortD. Experimental

Risk assessments have typically been done in the following contexts. CHOOSE ALL THAT APPLY: OA. ways that government regulation prevent risks from occurring B. how chemical exposure affects human health O c. how general ecological factors create health risk OD. chemical spills into the water or air (like Elk River) O E. what living next to a waste dump means for neighborhood health OF. ways that environmental risks are born disproportionately by the poor G.how contaminated sites affect human health H. alternatives to industries that create hazardous waste

A group of 312 heart attack patients who were regular smokers up to the time of their heart attacks were followed for ten years. Among them, 150 patients continued to smoke after their heart attacks and 162 quit after their heart attacks.  Of the 150 patients that continued smoking, 54 had a second heart attack during the ten years of follow-up, and of the patients who quit, 28 had a second heart attack during the 10 years of follow-up.  Calculate the appropriate measure of association between continued smoking and second heart attack.

Please answer this question