EBM Day 6 Flashcards Preview

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Flashcards in EBM Day 6 Deck (10)
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1
Q

web of causation

A

fight against 1 factor to 1 disease hypot

Idenfiy prevention/modifiable steps

2
Q

Suff vs Nec

A

Effect will result regardless of the presence or absence of other factors

Without it the effect will not occur
(need other factors for even to occur)

3
Q

Koch’s postulates

A

Can find microorg in sick, can isolate, can make orgs sick, can be re-isolated

not useful for chronic diseases

4
Q

BH critera-8

A

Temporatlity-req-need disease to be after exposure

Str or assoc-strong assoc better than weak

Dose response-expsure up, disease rate up
-threshold response

Reversibility
-remove exposure decrease rate of disease

Consistency-results are consistent across dif populations-

Plasubility-obvious

Specifity-exposure associated with disease outcome-super useless

Analogy=cause is analogous to other established causal relationships

5
Q

eco studies

A

aggregate studies

group analysis

missing expsoure and outcome on individual level

6
Q

Ecologic fallacy

A

all we have is avg values and rates-nothing about individualls
-can not ascribe group characteristics to indiv members of group (unless group is homogeneous)

7
Q

Metanalysis vs Quantitative Pooled Analysis

A

use other peoples data to establish better belief in things

Combine raw data-increase power and precision
-better to have studies with common protocol

8
Q

Best to worst studies

A
RCT
Nonrandomizd trails
Meta/pooled analysis
prospective cohort
retro cohort
case control
cross-sectional
eco
case series
9
Q

Qualitative Reviews

A

Qualitatively determine adv of treatment-kinda systematic

-objective

10
Q

Systematic reviews

A

Look at evidence and determine how affective is an exposure

  • subjective
  • most things have not enough evidence