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EBP 2 > Exam 3 > Flashcards

Exam 3 Flashcards

1
Q

What are the two types of chi squared tests?

A

Goodness of fit

Test of independence

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2
Q

Goodness of fit chi squared test

A

Comparing frequencies of one variable to known frequencies of another (rolling dice, coin flip, expected color in bag)

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3
Q

Test of independence chi squared

A

Observed frequencies of two variables (categorical) (are they related or independent of one another)

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4
Q

What are the assumptions for chi squared?

A

Frequencies are individual counts, not rank or %

Categories are mutually exclusive (only fits in one box)

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5
Q

What does the chi squared test look at?

A

Expected frequency over actual frequency

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6
Q

When do you choose a non parametric test for chi squared?

A

If a cell has less than 5

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7
Q

What test do you choose if a frequency is greater than 5?

A

Chi squared x^2 test

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8
Q

What do you choose if a frequency is less than 5?

A

Fishers exact test

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9
Q

What is McNemar test?

A

Paired test of association

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10
Q

What does an R of 0.00 to 0.25 equal?

A

Little to no relationship

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11
Q

What does an R of 0.26 to 0.50 equal?

A

Fair relationship

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12
Q

What does an R of 0.51 to 0.75 equal?

A

Moderate to good

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13
Q

What does an R of 0.76 to 1.00 equal?

A

Good to excellent

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14
Q

Cohens criteria

A

Small R= .10

Medium R= .30

Large R= .50

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15
Q

What type of data is Pearson R?

A

Ratio/interval

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16
Q

What type of data is spearman Rho?

A

Ordinal (non parametric of pearson r)

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17
Q

What type of data is chi squared?

A

Dichotomous/nominal

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18
Q

Interclass correlation coefficients (ICCs)

A

For interval/ratio continuous scale score

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19
Q

Cohens kappa coefficients

A

For ordinal/nominal categorical scale scores (non parametric counter part of ICCs)

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20
Q

What is the first number in an ICC?

A

Model

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21
Q

What is the second number in an ICC?

A

Form

22
Q

What type of model is inter rater reliability?

A

Model 2

23
Q

What type of model is an intra rater reliability?

A

Model 3

24
Q

What type of model is a test retest reliability?

A

Model 2

25
Q

What is a score >.90 in an ICC mean?

A

Best for clinical measurements

26
Q

What is a score >.75 in an ICC mean?

A

Good reliability

27
Q

What does a score of <.75 in an ICC mean?

A

Poor to moderate

28
Q

What does a score of <0.4 in kappa coefficient mean?

A

Poor to fair

29
Q

What does a score of 0.4-0.6 in kappa coefficient mean?

A

Moderate

30
Q

What does a score 0.6 to 0.8 in a kappa coefficient mean?

A

Substantial

31
Q

What does a score 0.8 to 1.0 in kappa coefficient mean?

A

Excellent

32
Q

What does SEM equal?

A

Absolute measure of reliability

33
Q

What can SEM be used to create?

A

Confidence interval

34
Q

What are ICC/kappa used for?

A

Reliability

35
Q

What are spearman/pearson used for?

A

Validity

36
Q

What does it mean if you have an odds ratio of 4?

A

You are 4x greater to get the dependent variable if you do the independent variable

37
Q

What does it mean when the odds ratio is 1?

A

Null hypothesis (1x as likely)

38
Q

What does NNT mean?

A

How many patients you have to provide treatment to in order to prevent one bad outcome

39
Q

What does a score in an NNT mean?

A

Closer to 1 the better

40
Q

What does it mean if a question contains prediction?

A

Regression

41
Q

What are the assumptions of a linear regression analysis?

A

There is a linear relationship

DV= continuous

42
Q

How do you determine if something is a linear regression analysis?

A

DV= continuous

43
Q

How do you determine if something is a simple linear regression?

A

Has 1 independent variable

44
Q

How do you determine if something is a multiple linear regression?

A

2+ independent variables

45
Q

How do you determine if something is a logistic regression analysis?

A

DV= dichotomous

46
Q

What are the clinical prediction rules?

A

Derivation

Validation

Impact analysis

47
Q

What does correlation not ever equal?

A

Causation

48
Q

What is an internal consistency: Cronbachs alpha used to do?

A

Correlate items on a questionnaire

49
Q

What type of data is used in an ICC?

A

Continuous

50
Q

What type of data is used in a kappa?

A

Categorical data

51
Q

How can you tell if an odd ratio is statistically significant?

A

If the CI cross 1 or not

52
Q

Which type of analysis does the clinical prediction rule use?

A

Regression

EBP 2 (3 decks)

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