Lung Cancer & Smoking Case Study A causal relationship between cigarette smoking and lung cancer was...
Lung Cancer & Smoking Case Study A causal relationship between cigarette smoking and lung cancer was first suspected in the 1920s on the basis of clinical observations. To test this apparent association, numerous epidemiologic studies were undertaken between 1930 and 1960. Two studies were conducted by Richard Doll and Austin Bradford Hill in Great Britain. The first was a case-control study begun in 1947 comparing the smoking habits of lung cancer patients with the smoking habits of other patients. The...
Lung Cancer & Smoking Case Study A causal relationship between cigarette smoking and lung cancer was first suspected in the 1920s on the basis of clinical observations. To test this apparent association, numerous epidemiologic studies were undertaken between 1930 and 1960. Two studies were conducted by Richard Doll and Austin Bradford Hill in Great Britain The first was a case-control study begun in 1947 comparing the smoking habits of lung cancer patients with the smoking habits of other patients. The...
Paragraph Styles Refer to the following for text for the questions below A causal r 1920s on the basis of clinical observations. To test this apparent association, numerous epidemiologic studies were undertaken between 1930 and 1960. Two studies were conducted by Richard Doll and Austin Bradford Hill in Great Britain. The first was a case-control study begun in 1947 comparing the smoking habits of lung cancer patients with the smoking habits of other patients. The second was a cohort study...
QUESTION 15: WHAT DO THESE RESULTS TELL YOU? QUESTION 16: WHAT ARE THE OTHER POSSIBLE EXPLANATIONS FOR THE APPARENT ASSOCIATION? INCLUDE AND EXPLAIN 3 SPECIFIC BIAS THAT PERTAIN TO THIS STUDY. Lung Cancer & Smoking Case Study A causal relationship between cigarette smoking and lung cancer was first suspected in the 1920s on the basis of clinical observations. To test this apparent association, numerous epidemiologic studies were undertaken between 1930 and 1960. Two studies were conducted by Richard Doll and...
In a study of the effects of smoking on lung cancer, 100 men with lung cancer were compared to 100 men without lung cancer. Among those with lung cancer, 80 had a previous history of smoking. Among the comparison group, 45 had a previous history of smoking. What type of study design was used for this investigation of the association between smoking and lung cancer? Prospective cohort study Retrospective cohort study Case-control study Clinical trial None of the answers listed
Over 1,700 patients with lung cancer, all under age 75, were eligible for the case-control study. About 15% of these persons were not interviewed because of death, discharge, severity of illness, or inability to speak English. An additional group of patients were interviewed but later excluded when initial lung cancer diagnosis proved mistaken. The final study group included 1,465 cases (1,357 males and 108 females). The following table shows the relationship between cigarette smoking and lung cancer among male cases...
Over 1,700 patients with lung cancer, all under age 75, were eligible for the case-control study. About 15% of these persons were not interviewed because of death, discharge, severity of illness, or inability to speak English. An additional group of patients were interviewed but later excluded when initial lung cancer diagnosis proved mistaken. The final study group included 1,465 cases (1,357 males and 108 females). The following table shows the relationship between cigarette smoking and lung cancer among male cases...
The following table shows the relationship between cigarette smoking and lung cancer among male cases and controls. Cases Controls Cigarette smoker 1,350 1,296 Non-Smoker 7 61 Total 1,357 1,357 Table 1. Smoking status before onset of the present illness, lung cancer cases and matched controls with other diseases, Great Britain, 1948-1952. Question 11 (2 points) Calculate the odds of smoking among the cases?
Dr. Johnson conducted a study to assess the effect of cigarette smoking on lung cancer. The study findings showed an association between cigarette smoking and lung cancer, with a reported odds ratio (OR)=1.0. What does this number (1.0) convey about the association between the two variables? (underlie the correct answer). A. non-smokers were more likely to have lung cancer than smokers B. non-smokers were less likely to have lung cancer than smokers C. smokers and non-smokers had an equal chance...
A study examined the association between lung cancer and working in an asbestos plant. Although the asbestos plant closed 10 years ago, researchers pulled past employment records to confirm employment. They divided the company employees into two groups: those directly exposed on the production line and those who worked in other areas of the plant, not directly working with asbestos. The researchers then looked at medical records to see if the exposed and unexposed groups were currently diagnosed with lung...