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Is there an association between the use of computerized system and hospital mortality? In a large- scale hospital study, the study investigator randomly sampled 35 hospitals from all hospitals in Texas. Within each of the sampled hospitals, 500 patients who were hospitalized during the past year were randomly chosen. Their medical records were retrieved and whether they died while hospitalized was noted. It was found that on average, hospitals (26 of them) in which health care information is gathered and stored on computers had a lower patient death rate than hospitals (9 of them) that still rely on the "paper" system (using paper forms and handwritten notes).

Is there an association between the use of computerized system and hospital mortality? In a large- scale hospital study, the study investigator randomly sampled 35 hospitals from all hospitals in Texas. Within each of the sampled hospitals, 500 patients who were hospitalized during the past year were randomly chosen. Their medical records were retrieved and whether they died while hospitalized was noted. It was found that on average, hospitals (26 of them) in which health care information is gathered and stored on computers had a lower patient death rate than hospitals (9 of them) that still rely on the "paper" system (using paper forms and handwritten notes).

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Part III Which of the following is the population of interest to the study investigator? Choose the most appropriate answer. A. All hospitals in Texas. B. All patients who were admitted to the 35 selected hospitals in Texas. C. The 35 Texas hospitals that were selected in the study. D. The 17500 patients whose medical records were retrieved in the study.
Transcribed Image Text:Part III Which of the following is the population of interest to the study investigator? Choose the most appropriate answer. A. All hospitals in Texas. B. All patients who were admitted to the 35 selected hospitals in Texas. C. The 35 Texas hospitals that were selected in the study. D. The 17500 patients whose medical records were retrieved in the study.
Is there an association between the use of computerized system and hospital mortality? In a large- scale hospital study, the study investigator randomly sampled 35 hospitals from all hospitals in Texas. Within each of the sampled hospitals, 500 patients who were hospitalized during the past year were randomly chosen. Their medical records were retrieved and whether they died while hospitalized was noted. It was found that on average, hospitals (26 of them) in which health care information is gathered and stored on computers had a lower patient death rate than hospitals (9 of them) that still rely on the "paper" system (using paper forms and handwritten notes). Part I What kind of study is this? A. An observational study. B. An experiment. C. None of the above. Part II What sampling method was employed in selecting the 17500 patients? A. Simple random sampling. B. Stratified random sampling. C. Multistage sampling. D. Systematic sampling.
Transcribed Image Text:Is there an association between the use of computerized system and hospital mortality? In a large- scale hospital study, the study investigator randomly sampled 35 hospitals from all hospitals in Texas. Within each of the sampled hospitals, 500 patients who were hospitalized during the past year were randomly chosen. Their medical records were retrieved and whether they died while hospitalized was noted. It was found that on average, hospitals (26 of them) in which health care information is gathered and stored on computers had a lower patient death rate than hospitals (9 of them) that still rely on the "paper" system (using paper forms and handwritten notes). Part I What kind of study is this? A. An observational study. B. An experiment. C. None of the above. Part II What sampling method was employed in selecting the 17500 patients? A. Simple random sampling. B. Stratified random sampling. C. Multistage sampling. D. Systematic sampling.
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