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Epi and EBM > Formulas > Flashcards

Formulas Flashcards

1
Q

Risk

A

n/group

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2
Q

Rate

A

n/person years

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3
Q

Risk ratio

A

Re/Ru

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4
Q

Attributable risk

A

Re-Ru

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5
Q

Attributable risk %

A

Re-Ru/Re

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6
Q

Population attributable risk

A

Rt-Ru

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7
Q

PAR%

A

Rt-Ru/Ru

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8
Q

OR

A

(exposed case/non-exposed case)/(exposes control/non-exposed control)

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9
Q

Hazard

A

deaths/group-n

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10
Q

Hazard ratio

A

Htest/Hcontol

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11
Q

NNT

A

1/AR = 1/Re-Ru

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12
Q

Sensitivity

A

TP/(TP+FN)

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13
Q

Specificity

A

TN/(TN+FP)

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Epi and EBM (8 decks)

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