In a short essay format please state which type of mathemati

In a short essay format, please state which type of mathematical parameter (ratio/proportion/rate) and which type of measure of disease frequency (cumulative incidence/incidence rate/prevalence) best describes each of the following:

Percentage of infants enrolled in a day-care center who contracted impetigo during the Course of an epidemic.

Percentage of potential army recruits rejected because of poor vision

Number of colds experienced in a year per thousand people

Percent of deceased males who are found to have prostate cancer at autopsy.

Number of stillbirths (children born dead) per thousand live-births.

Percent of persons who have malaria that is resistant to treatment with chloroquine.

Number of newly diagnosed brain tumors in a year per 100,000 children.

Percent of live-born infants with a cardiac malformation among 100,000 live-births

Solution

Percentage of infants enrolled in a day-care center who contracted impetigo during the Course of an epidemic.

the above one is a prevalance

Percentage of potential army recruits rejected because of poor vision is a rate

Number of colds experienced in a year per thousand people is a proportion

Percent of deceased males who are found to have prostate cancer at autopsy is ratio

Number of stillbirths (children born dead) per thousand live-births is ratio

Percent of persons who have malaria that is resistant to treatment with chloroquine is ratio

Number of newly diagnosed brain tumors in a year per 100,000 children is incidence rate

Percent of live-born infants with a cardiac malformation among 100,000 live-births is incidence rate