Research Flashcards

1
Q

accuracy of screening and diagnosis can be determined by

A
  1. reliability
  2. validity
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2
Q

reliability consistent test called

A

kappa value
more than 0.75 excellent
0.40-0.75 acceptable
< 0.40 poor

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3
Q

validity test based on

A

sensitivity and specificity
and ROC

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4
Q

sensitivity calculates

A

disease
Se = TP / (TP + FN)
high Se = low FN

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5
Q

specificity

A

calculate health
Sp = TN/ (TN + FP)

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6
Q

screening targets

A

large asymptomatic population

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7
Q

Incidence and prevalence calculation

A

Incidence = number of newly diseased individuals in a given time / total number of individuals at the beginning of the study

Prevalence = number of diseased individuals / total number of individuals

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8
Q

PICO

A

P: population/patient/problem
I: Intervention
C: Comparison
O: Oucome

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9
Q

Odds ratio

A

If the odds ratio equals 1, the exposure does not affect the odds of the outcome

If the odds ratio is greater than 1, the exposure is associated with increased odds of the outcome

If the odds ratio is less than 1, the exposure is associated with decreased odds of the outcome

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