47. A national survey indicates that the number of people younger than the age of 16 years with a diagnosis of asthma has increased during the past 10 years. To determine the cause of this increase, 100 patients under the age of 16 years with asthma are selected from each of the following settings: inner city, rural, and suburban. One thousand children without asthma matched for age and from families of similar socioeconomic status are selected, and comparisons among the groups are made. The risk ratio for cigarette smoking in one household member for patients with asthma is 1.8 (95% confidence interval of 1.3 to 3.5). Which of the following best describes this study design? 00 OA) Case-control study B) Case series C) Cross-sectional study OD) Meta-analysis E) Observational cohort study

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47. A national survey indicates that the number of people younger than the age of 16 years with a diagnosis of asthma has increased during the past 10 years. To determine the cause
of this increase, 100 patients under the age of 16 years with asthma are selected from each of the following settings inner city, rural, and suburban. One thousand children without
asthma matched for age and from families of similar socioeconomic status are selected, and comparisons among the groups are made. The risk ratio for cigarette smoking in one
household member for patients with asthma is 1.8 (95% confidence interval of 1.3 to 3.5). Which of the following best describes this study design?
OA) Case-control study
B) Case series
C) Cross-sectional study
OD) Meta-analysis
OE) Observational cohort study
Transcribed Image Text:47. A national survey indicates that the number of people younger than the age of 16 years with a diagnosis of asthma has increased during the past 10 years. To determine the cause of this increase, 100 patients under the age of 16 years with asthma are selected from each of the following settings inner city, rural, and suburban. One thousand children without asthma matched for age and from families of similar socioeconomic status are selected, and comparisons among the groups are made. The risk ratio for cigarette smoking in one household member for patients with asthma is 1.8 (95% confidence interval of 1.3 to 3.5). Which of the following best describes this study design? OA) Case-control study B) Case series C) Cross-sectional study OD) Meta-analysis OE) Observational cohort study
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