iPad 9:25 AM * 73% Hw-01 Study Types Bias Biostatistics Samples, Studies &Source
ID: 3071697 • Letter: I
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iPad 9:25 AM * 73% Hw-01 Study Types Bias Biostatistics Samples, Studies &Sources of Bias 1 A researcher was interested in evaluating whether Vitamin E delayed the admission of Alzheimer's patients to nursing homes. The researcher recruited 90 patients who were taking Vitamin E as a dietary supplement and 80 patients who were not taking Vitamin E. The researcher then followed the 170 patients for 3 years recorded the number of days it took for each patient to be admitted to a nursing home. The researchers also measured the patients' level of daily functioning when they were admitted to the nursing home What type of study is this? a) Case series b) Experimental study ) Prospective cohort studyeneonVp to ansuwer queston tuo.-planted d) Case-control study e) Cross-sectional study ollosed ove tine 2 Does sensory deprivation have an effect on a person's alpha-wave frequency? Twenty volunteer subjects were randomly divided into two groups. Subjects in group A were subjected to a 10-day period of sensory deprivation, while subjects in group B served as controls. After the 10-day period, the alpha wave frequency component of subjects electroencephalograms were measured. - randomly dv What type of study is this? a) Case series b) Randomized Control Trial c) Prospective cohort study d) Case-control study Contvo quantHtahive 3. Proper hand washing by the staff is a way to reduce hospital acquired (nosocomial) infections. JBJ Memorial Hospital decided to implement a hand washing training program, but it was only possible to conduct the program on two of its four medical floors. The staff on two floors volunteered to participate in the training. Several months after the completion of the program on the two floors, the JBJ staff decided to conduct a study and prospectively collect nosocomial infection data of all four floors. The nosocomial infections on the two floors that underwent the program were 7/10,000 patient days while there were 12/10,000 patient days on the floors without the training. This study is an example of a: a) Experimental study (Intervention study) b) Randomized Control Trial c) Prospective cohort study d) Case-control study e) Cross-sectional study anayze previ us what happted?Explanation / Answer
1. c prospective cohort study
2.c randomised controlled trial
3. cross control study
4.case series
5. b
6.true
7.true
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