Quantitative Flashcards
What type of study seeks to prove causality?
Quantitative
Observational - cohort
Experimental
What type of study compared those with a condition to those without, looking also at risk factors that may be common?
Quantitative
Observational
Case control
What are the two main quantitative study designs ?
Observational and experimental
Name the three types of Observational study.
Cross sectional
Cohort
Case controlled
Names the two types of experimental study designs.
Quasi-experiment
RCT
Which starts with a hypothesis quantitative or qualitative?
Quantitative
The levels of evidence are: S R W C C S
Systematic reviews RCTs Well controlled studies Cohort studies Case controlled studies Survey and case study
What kind of study looks at
prevalence and associations?
Quantitative
Observational
Cross sectional
What type of trial tests the effect of treatments or interventions on an outcome?
Quantitative
Experimental
RCT
What are the negatives of an RCT?
Expensive, time consuming, ethical?, performance and detection bias?
What is a quasi-experiment?
When a true experiment cannot be carried out or aren’t possible. Subjects cannot be randomly assigned to treatment conditions.
What are the benefits of a RCT?
There is minimal bias.
What are three important factors of an RCT?
Randomisation of allocation to groups
Control group
Temporality
A retrospective study is one on events that have already taken place. Give a positive and a negative of a retrospective study.
+ small, fast, cheap, more outcomes studied
- recall bias, record keeping?, difficult to establish causality
Define a T-test.
A parametric statistical test for analysing the difference btw two means
