Mind map

Introduce el texto aquí

maria fernanda samayoa Spanish

Map content

Samples
- Parts of population
  - Sampling techniques
    - How we select members from the population to be in study
Observational Study
- Observe and measure but do not modify
  - What are made?
    - Past period of time
      - Retrospective / case control study.
        GO back in time to collect data over same past period
    - one point in time
      - Cross-Sectional study
        Data are measured at one point in time
    - Forward in time
      - Perspective / longitudinal
        GO forward in time and observe groups sharing common factors

Description: Mind Map on Introduce el texto aquí, created by maria fernanda samayoa on 14/03/2019.
Created by: maria fernanda samayoa
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