Assignment

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:

1. 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.
2. Percent of live-born infants with a cardiac malformation among 100,000 live-births