Introducing quantitative research Flashcards Preview

Nursing Knowledge and Research > Introducing quantitative research > Flashcards

Flashcards in Introducing quantitative research Deck (14)
Loading flashcards...
1

What things are pre-stated before a quantitative study?

-Aims (broad statement)
-objectives
-hypotheses (statement of relationship between variables)

2

What are the key features of Quantitative research?

-measurable
-aims, objectives, hypotheses
-standardised procedures
-outcomes = valid and reliable
-results presented statistically
- results aimed at: falsification (testing hypothesis), estimated causal relationships and estimated association between variables

3

What is validity?

when a study measures what it intends to measure

4

What is reliability?

That the study must be repeatable and produce similar effects

5

What should results of quantitative research be aimed at?

-falsification
-establishing causal relationships
-establishing association between variables

6

Describe expert opinion

-lowest level of opinion
-high chance of bias/ errors
-only possible evidence source
-can be considered as research
-has some gravity

7

What is a case-control study?

-type of observational study
-conducted in retrospect
-starts with a condition (the case)
-matched with a control
-unable to attribute causation

8

What is a cohort study?

-looks at association between one entity and another
-e.g. smokers vs. non-smokers
-data collected prospectively
-collect the data you want
-provides greater precision (than case-control)

9

What are case-reports?

-descriptive studies
-tend to be small

10

What is case-series?

-same as case-report but >10 cases
-aim to measure course/progression of disease

11

Strengths of case-series?

-speed of deployment
-provides useful initial pilot data

12

Limitations of case-series?

-insufficient numbers for meaningful analysis
-only involve single groups so no independant control group

13

Name the 9 components of the Bradford-Hill criteria

-temporal relationship, strength, dose-response relationship, consistency, plausibility, consideration of alternate explanations, experiment, specificity, coherence

14

What are randomised controlled trials?

-prospective
-intervention given
-PPs randomly allocated to recieve intervention or not
-outcome of interest = measured