Types of Research Designs

Question 1

Qualitative

Answer 1

More opinions, thoughts, and attitudes (subjective)

Question 2

Quantitative

Answer 2

Non Experiemntal (minimal control)
Quasi Experimental
True Experiemntal (maximal control)

Question 3

Non Experimental

Answer 3

Cohort

Case Control

Question 4

Cohort

Answer 4

Usually prospective, longitudinal, 2 groups (1 with outcome and one without)
Looking for an association between a suspected risk factor and its outcome

Question 5

Steps of cohort study

Answer 5

Selection of study population (free of disease)
Obtaining data on exposure (assess their baseline)
Selection of comparison group (comparison group not exposed to risk factor)
Follow up
Analysis

Question 6

Case Control

Answer 6

Usually retrospective
Longitudinal
2 groups (1 with and 1 without)
Problem = you don’t really know if the rick factors or the outcome comes first

Question 7

Quasi Experimental Design

Answer 7

Don’t adequately control for the influence of extraneous variables (most commonly random assignment, no control group…simply a pre and post test)

Question 8

True Experimental Design

Answer 8

Pretest-Posttest Control Group (RCT) – always prospective, has an intervention, gold standard for evaluating treatment
Posttest only – identical to RCT w/o pretest
Factorial – allows interaction effects, allows multiple IVs and levels
Repeated measures – each subject serves as own control

Question 9

Ideal design for RCT

Answer 9

Placebo controlled
Randomized
Double blind
Crossover design