Observational Study Designs

Description

HBS108 (Week 6 & 7) Mind Map on Observational Study Designs, created by shirley.ha on 26/08/2013.
shirley.ha
Mind Map by shirley.ha, updated more than 1 year ago
shirley.ha
Created by shirley.ha about 11 years ago
35
0

Resource summary

Observational Study Designs
  1. Non experimental
    1. effective for investigating causal links between exposures and disease
      1. more susceptible to bias and confounding compared to randomised control trials.
        1. 'non-intervention' studies that are conducted as people go about their daily life.
        2. Types
          1. Analytical
            1. cohort studies, case-control, or analytical surveys
              1. cross-sectional surveys
              2. examine relationships between variables (e.g. 'Does alcohol consumption increase the risk of breast cancer?').
              3. Descriptive
                1. case reports, case series and simple surveys
                  1. more commonly used to measure the incidence and prevalence of risk factors or disease
                2. ANALYTICAL
                  1. Cohort Studies
                    1. longitudinal in design, start with a selected group of disease-free people who are classified according to specific exposure (e.g. high/low alcohol consumption
                      1. study group is followed over time to see who develops the disease/outcome (e.g. breast cancer).
                        1. used to measure incidence (new cases of disease) and thus risk.
                          1. Analyse results
                            1. relative risk (RR)
                              1. odds ratios (OR).
                                1. represent the increased (or decreased) risk of disease for those in the exposed group
                                2. Examples of questions
                                  1. 3.Does smoking increase the risk of lung cancer and other diseases?
                                    1. 4.Does breast-feeding play a role in breast cancer?
                                      1. 1.Does physical activity reduce the risk of heart disease?
                                        1. 2.Do high levels of HDL cholesterol reduce the risk of coronary death?
                                    Show full summary Hide full summary

                                    Similar

                                    Topic 7: Quantitative Research - Sampling, Data Collection & Measurement
                                    shirley.ha
                                    Prob Methods of sampling
                                    shirley.ha
                                    Categorical & Cont variables
                                    shirley.ha
                                    Variables, Scales of Measurement, Validity & Reliability
                                    shirley.ha
                                    Confounding
                                    shirley.ha
                                    Non-probability sampling methods
                                    shirley.ha
                                    Reliability & Validity
                                    shirley.ha
                                    Week 6 Bias LO
                                    shirley.ha
                                    Quantitive Data Collation
                                    shirley.ha
                                    Other studies
                                    shirley.ha