Eleanor garvey
Quiz by , created more than 1 year ago

Test I: 6, 15, 105, 106, 108, 109 Test II: 41, 87 Test III: 23, 61, 97, 99, 116, 137 Test IV: 5, 37 Test V: 23, 90, 122 Test VI: 105, 113

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Eleanor garvey
Created by Eleanor garvey almost 4 years ago
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Statistics

Question 1 of 21

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Test 1 Question 6. A group of patients are looked at with regard to a risk factor for heart disease. They are divided into those who have the risk factor and those who do not. These groups are then followed for a number of years to see who does and who does not develop heart disease. This is an example of a:

Select one of the following:

  • Cohort study

  • Case–control study

  • Clinical trial

  • Cross-sectional survey

  • Crossover study

Explanation

Question 2 of 21

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Test 1 Question 15. A chronic schizophrenic has been taking medication for 20 years. Every morning he goes to his pill bottle and takes the pills his doctor prescribes. This is an example of:

Select one of the following:

  • Primary prevention

  • Secondary prevention

  • Tertiary prevention

  • Malingering

  • Noncompliance

Explanation

Question 3 of 21

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Test 1 Question 105. A type I error occurs when:

Select one of the following:

  • The null hypothesis is rejected when it should have been retained

  • The null hypothesis is retained when it should have been rejected

  • There is false rejection of a difference that was truly significant

  • The probability of an event occurring is 0

  • The probability of an event occurring is 1

Explanation

Question 4 of 21

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Test 1 Question 106. The process by which a patient in a clinical trial has an equal likelihood of being in a control group versus an experimental group is:

Select one of the following:

  • Probability

  • Risk

  • Percentile rank

  • Power

  • Randomization

Explanation

Question 5 of 21

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Test 1 Question 108. The probability of finding a true difference between two samples is:

Select one of the following:

  • Probability

  • Risk

  • Percentile rank

  • Power

  • Randomization

Explanation

Question 6 of 21

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Test 1 Question 109. The number of people who have a disorder at a specified point in time is:

Select one of the following:

  • Probability

  • Risk

  • Point prevalence

  • Power

  • Randomization

Explanation

Question 7 of 21

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Test 2 Question 41. Which one of the following is a method of making a prediction to compare the value of one variable to another?

Select one of the following:

  • Probability

  • Point prevalence

  • Incidence

  • Regression analysis

  • Kappa

Explanation

Question 8 of 21

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Test 2 Question 87. A study in which a group comes from a well-defined population and is followed over a long period of time is a:

Select one of the following:

  • Case history study

  • Cohort study

  • Cross-sectional study

  • Case–control study

  • Retrospective study

Explanation

Question 9 of 21

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Test 3 Question 23. The assumption that there is no significant difference between two random samples of a population is called:

Select one of the following:

  • Correlation coefficient

  • Control group

  • Analysis of variance (ANOVA)

  • Regression analysis

  • Null hypothesis

Explanation

Question 10 of 21

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Test 3 Question 61. Which one of the following is false regarding the Pearson correlation coefficient?

Select one of the following:

  • It spans from −1 to +1

  • A positive value means that one variable moves the other variable in the same direction

  • It can give information about cause and effect

  • It indicates the degree of relationship

  • A negative value means that one variable moves the other variable in the opposite direction

Explanation

Question 11 of 21

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Test 3 Question 97. A method of obtaining a prediction for the value of one variable in relation to another variable is called:

Select one of the following:

  • Correlation coefficient

  • Control group

  • ANOVA

  • Regression analysis

  • Null hypothesis

Explanation

Question 12 of 21

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Test 3 Question 99. A measurement of the direction and strength of the relationship between two variables is called:

Select one of the following:

  • Correlation coefficient

  • Control group

  • ANOVA

  • Regression analysis

  • Null hypothesis

Explanation

Question 13 of 21

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Test 3 Question 116. If you divide the incidence of a disease in those with risk factors by the incidence of the same disease in those without risk factors, the result is called the:

Select one of the following:

  • Relative incidence

  • Attributable risk

  • Relative risk

  • Period incidence

  • Incidence risk

Explanation

Question 14 of 21

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Test 3 Question 137. A group that does not receive treatment and is the standard for comparison is called the:

Select one of the following:

  • Correlation coefficient

  • Control group

  • ANOVA

  • Regression analysis

  • Null hypothesis

Explanation

Question 15 of 21

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Test 4 Question 5. A doctor in a certain hospital makes a diagnosis for a particular patient. That diagnosis is considered reliable if:

Select one of the following:

  • It is accurate

  • Many different doctors in different locations would agree upon the same diagnosis

  • The disorder has features characteristic enough to distinguish it from other disorders

  • The disorder allows doctors to predict the clinical course and treatment response

  • The diagnosis is based on an understanding of the underlying pathophysiology and has biological markers

Explanation

Question 16 of 21

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Test 4 Question 37. A set of statistical procedures designed to compare two or more groups of observations and determine whether the differences are due to chance or experimental difference is called:

Select one of the following:

  • Correlation coefficient

  • Control group

  • Analysis of variance

  • Regression analysis

  • Null hypothesis

Explanation

Question 17 of 21

1

Test 5 Question 23. You are studying two variables, a binary predictor variable and a continuous outcome variable. You want to know if the relationship between those two variables is due to chance alone. Which of the following tests would you use?

Select one of the following:

  • Analysis of variance (ANOVA)

  • χ2 test

  • T test

  • Negative predictive power

  • Predictive validity

Explanation

Question 18 of 21

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Test 5 Question 90. A clinical test that detects 96% of patients with a certain disease, but also produces many false positives in patients without the disease, is deemed to have:

Select one of the following:

  • High sensitivity and high specificity

  • Low sensitivity and high specificity

  • Low sensitivity and low specificity

  • High sensitivity and low specificity

  • Low overall clinical utility

Explanation

Question 19 of 21

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Test 5 Question 122. A general consensus among experienced clinicians and researchers is known as:

Select one of the following:

  • Face validity

  • Descriptive validity

  • Predictive validity

  • Construct validity

  • Positive predictive power

Explanation

Question 20 of 21

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Test 6 Question 105. Which of the following disorders is not more common in males?

Select one of the following:

  • Autism

  • Obsessive–compulsive disorder

  • ADHD

  • Exhibitionism

  • Pathological gambling

Explanation

Question 21 of 21

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Test 6 Question 113. Which of the following statistical measures would be used to quantify the degree of agreement between two raters in a study?

Select one of the following:

  • Point prevalence

  • Period prevalence

  • Lifetime prevalence

  • Kappa

  • Correlation coefficient

Explanation

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