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EBP HC 3: Systematische fouten

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Uitwerking van de PowerPoint van het 3e HC: Systematische fouten. Jaar 2 blok A.

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November 1, 2021
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EBP
3: Systematische fouten

De student kan uitleggen wat bias is

Systematische fouten:
Vertekening van je studieresultaten
1. Random error
2. Bias

Random error:
Vragenlijsten bij patiënten, de laatste patiënt maar afraffelen

Bias:
De ernst van een bijwerking veel hoger inschatten. Door willekeur ben je patiënten anders aan het
benaderen dan andere patiënten.

Systematische fouten leidt tot vertekening, dat leidt tot bias.

Interne validiteit:
- De resultaten worden door andere factoren beïnvloed
- Bijvoorbeeld soort persoon of andere setting




Externe validiteit:
- Refereert naar de mate waarin de studieresultaten veralgemeenbaar zijn dan andere
populaties dan de studiepopulatie
- Zijn mijn deelnemers wel mijn studie? Is de studiepopulatie representatief voor de
doelpopulatie?
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