Statistics, Things Frequently Forgotten Flashcards

1
Q

LR values of 2, 5, 10

A

15%, 30%, 45%

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2
Q

Absolute AR (AR)

A

patients w/ event / total number of patients

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3
Q

Relative Risk (RR)

A

EER / CER

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4
Q

Absolute Risk Reduction (ARR)

A

EER - CER

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5
Q

Relative Risk Reduction

A

EER - CER / CER

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6
Q

NNT

A

1 / ARR or 1 / EER - CER

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7
Q

Metabolic Acidosis Calculations

A

Winters, 1.5xHCO3 + 8

Chronic: HCO3+15

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8
Q

Observational Type of Studies

A

Case Control

Cohort

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9
Q

Prevalence influcences which measures?

A

PPV & NPV
More prevalence = more true positives
Less prevalence = more false positives

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10
Q

Prevalence =

A

percent of ppl in a population who have disease at any one time
i.e. who widespread it is

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11
Q

Statitisical measure used to help indiciate usefullness of screening test

A

PPV

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12
Q

Sentinel event =

A

death or serious harm

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13
Q

Type 1 Error

A

concludes there is a difference between the groups when there is NOT

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14
Q

Type 2 Error

A

concludes there is NO difference between groups when there IS one

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15
Q

Half lifes to reach steady state?

A

5

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16
Q

Zero-Order Kinetics, example

A

drug overdose (oversaturated receptors)

17
Q

Bioequivalence =

A

same rate of absorption

18
Q

Pharm Equivalents =

A

same mg of total active drug