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Flashcards in EBM Day 3 Deck (19)
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1
Q

CI=

A

mean+1.96(SE)

+/- 2SD

2
Q

SE=

A

SD/sqrtN

3
Q

Types of data (3)

A

Nominal (categroical)-yes/no, blood types

Ordinal-first second

Interval-Continous/discrete(counts)

4
Q

Validity

A

Accuracy

5
Q

2x2 of reliability vs vadlity

A

Precision vs accuracy

6
Q

3 types of variaition

A

measurement-instrument/observor (inter obs)

biological-over time in 1 indiv (intra), inter-individual

voerall- measurement+biological

7
Q

right skew

A

more data to the left

8
Q

3 types of abnormal

A

Unusual-2 sd away from mean IF NORMALLY DIST (95th percentile), based on healthy population, some diseases less than 2sd away

Associated with Disease or Risk increase-
values of clinical variable associated with current disease or increased disease rate-continuum diseases (diabetes), most clinical values do not easily fit into normal/abnormal

Past the point where trx does more good than harm-all treatments can harm as well as heal

9
Q

Sensitivity

A

test is positive when should be positive
-very few false negatives

TP/(TP+FN)

10
Q

Specificity

A

test is negative when should be negative
-very few false positive

TN/(Tn+FP)

11
Q

Be sensitive when

A

consequences of missing diagnosis is high (false neg costly)

12
Q

Be specific when

A

consequences of confirmatory tests are serious (false positive costly)

13
Q

Labeling (2 exs)

A

Can be positive and negative effects

You have hypertension and should take this pill

You have dementia-gg

14
Q

1 attributable cause of death

A

suboptimal blood pressure

15
Q

Normal Bp

A

120/80

16
Q

Reduce Bp

A

Aeroibic activity, down salt in take, weight loss, quit smoking, diet, mod alcohol consumption

17
Q

When use drugs

A

have 90mmHG diastolic

18
Q

Normal (3 types)

A

Usual (2sd)

not associated with disease/risk of disease

Treat/testing does more harm then good

19
Q

Bmi formula

A

weight in kg/height in meters