Bias, errors, and other sad things Flashcards

1
Q

what are the two main types of errors?

A
  1. random errors or chance: 2-tailed presentation of errors

2. Systematic Errors (Bias):- 1-tailed presentation of errors (usually)

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2
Q

describe confounding bias

A
  • two factors are associated (packaged, mated) and the effect of one
    distorts or is interpreted as the effect of the other
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3
Q

how can a researcher attempt to reduce confounding factors?

A

Matching
- According to known or suspected confounders to ensure equal distributions
of confounders in each study group
or
Restriction
- Restrict study or case admission criteria to prohibit variation of known or
suspected confounder in study groups
or
Randomization
- Ensure equal distribution of confounding variables in each study group

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