__________ mortality is a problem for a specific form of longitudinal study,in which the participants drop out of the project or disappear completely.
A) cohort.
B) panel.
C) trend.
D) longitudinal.
E) cross-sectional.

Question

Quizplus · Accepted Answer

Panel studies involve following the same group of people over a period of time. Therefore, panel studies are particularly susceptible to the problem of mortality, as participants may drop out or disappear over time, which reduces the size and representativeness of the sample. Cohort studies are also longitudinal studies, but they follow people who share a common experience, such as being born in the same year or being exposed to the same risk factor, rather than the same individuals over time. Trend studies examine changes in a population over time, while cross-sectional studies collect data on a sample of individuals at a single point in time.

__________ Mortality Is a Problem for a Specific Form of Longitudinal