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6 Cards in this Set
- Front
- Back
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Random sampling (probability sampling)
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- a population has a random chance of being included in study
- ie use random number table to randomly select 90 students from nursing student population, 90 students are a representative sample thats randomly selected from larger population |
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Randomization
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- After sample's acquired, participants have a random chance of being in intervention or control groups
- take those 90 students, further randomize into intervention and control groups (IG = 45, CG = 45) |
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Data collection Methods - RIBOQ
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R- Records or available data
I- Interviews B- Biological / physiological measures O-Observational Q- Questionnaires |
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Biological/Physiological
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- Physical, anatomical, chemical, microbiological
- Strengths: Precise, objective - weakness: invasive, expensive, hard to obtain - Think about reliability + validity of tools used |
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Observational
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- Concealed / non concealed, with intervention or without intervention
- Strengths: ideal for complex interactions, measuring people's actions/reactions weakness: ethics, reactivity, hathorne observer bias - Also consider reliability (inter rater, equivalence - agreement of observers using tool) |
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Questionnaires
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- Types: face to face, phone, paper + pencil, electronic
- Advantages: Fast, economical, anonymous, variety - Weakness: Response rates, recall bias, social desirability bias - consider open + close ended q's, validity + reliability |
