Question

Measurement bias occurs when the people who take part in a study are systematically different from those who do not.

Group of answer choices

True

False

Specificity is the is the proportion of disease-free people who are so identified by the screening test.

Group of answer choices

True

False

Which of the following are commonly expressed per 1000 at risk?

Group of answer choices

Crude birth rate

Infant mortality rate

Neonatal mortality rate

Fetal death rate

All of the above

The three types of bias that must be considered when evaluating the results of a screening program are:

Group of answer choices

lead-time bias, measurement bias and volunteer bias

lead-time bias, Berkson's bias, and measurement bias

lead-time bias, length-bias and rejection bias

None of the above

Answer 1

1) Measurement bias occurs when the people who take part in a study are systematically different from those who do not.

False. This is an example of Selection Bias/Volunteer Bias.

2) Specificity is the is the proportion of disease-free people who are so identified by the screening test.

True.

3) Which of the following are commonly expressed per 1000 at risk?

All of the above. All these are measured at per 1000 at risk.

4) The three types of bias that must be considered when evaluating the results of a screening program are:

lead-time bias, measurement bias and volunteer bias