Question

Epidemiology - Public Health

An approach to estimating the effects due to the single exposure factor is to compute the: A. risk difference B. etiological fraction C. population etiologic fraction D. population risk difference

Answer #2

Ans) B. Etiological fraction

Explaination: An approach to estimating the effects due to the
single exposure factor is to compute the
**Etiological** **fraction**.

**- Etiologic fraction** is the proportion of cases
in the exposed population in which the exposure has played a causal
role in disease development.

- Etiologic fraction is the probability of causation

(A1 + A2)/A+

- Etiologic fractions cannot be estimated directly from studies because the etiologic fraction requires strong biologic assumptions and are very sensitive to them.

answered by: anonymous

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