Quantitative Methods

A lot of this borrowed from Epi. Original focus on risk factors and development of diseases. Lots of methods adapted from clinical trials.

Opinion < Observation < Experiment

Intervention == Exposure in the context of what we’re talking about.

Prevalence: Snapshot of who has what. This works for cross-sectional/slice studies. But you cannot do incidence! This has to do with new things. New implies temporality. There is no temporality in cross-sectional studies. Because of this, there cannot be causal assertions. You can only speak of associations.