Formative PH Flashcards by Kieran Chalmers

Q

HSMR

A

No deaths/expected x 1000

(includes those 30 days after discharge)

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Q

Ab Risk

A

No events/no people

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Q

ARR

A

P(risk in exposed) - P(risk in unexposed)

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Q

RRR

A

1-RR

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Q

Rel Risk

A

(A/(A + B)) / (C/(C+D))

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Q

OR

A

AD/BC

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Q

PPV

A

TP/TP + FP

Chance +ve result is correct

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Q

NPV

A

TN/TN + FN

Chance -ve result is correct

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Q

Sensitivity

A

TP/(TP+FN)

Test +ve when disease present

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Q

Specificity

A

TN/(TN+FP)

Test -ve when no disease present

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Q

Incidence

A

No. new cases/pop. at risk

No new cases in a given time

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Q

SE

A

S.D/√n

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Q

C.I

A

Mean +/- (1.96 x SE)

(for 95% C.I)

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Q

Hierarchy of study designs

A

SR
Meta A
RCT
Cohort
Case-control
Case-report

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Q

Variance

A

(xi-Mean)^2/n-1

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