Environmental Toxicology-Epidemiology

Dose-response assessment refers to which of the following questions?

• What is the relationship between dose and occurence of health effects?

• What are the health effects that this agent can cause?

• What exposures are currently experienced under different conditions?

• What is the estimated occurence of the adverse effect in a population?

Exposure assessment refers to which of the following questions?

• What are the health effects that this agent can cause?

• What exposures are currently experienced under different conditions?

• What is the estimated occurence of the adverse effect in a population?

• What is the relationship between dose and occurence of health effects?

What type of combination of 2 chemicals produces an effect that is equal to their individual effects taken together?

• Potentiation

• Synergistic

• Additive

• Antagonistic

What type of interaction among several agents that have no known toxic effects produces a toxic effect?

• Additive

• Synergistic

• Potentiation

• Antagonistic

Those members of the population who are capable of developing a disease or condition are known as:

• incident cases

• the population at risk

• prevalent cases

• the individual susceptibility

The limitations of environmental epidemiology include the fact that:

• all of these are correct

• environmental associated diseases often have low incidence and prevalence

• the effects of exposures are often nonspecific

• accurate of exposure is difficult

An example of purely observational epidemiologic study do not usually include:

• cross-sectional study

• cohort study

• case serie

• experimental study

Which of the following observational designs is used for hypothesis testing

• ecologic

• cohort study

• cross-sectional

• clinical trial