Question

The Dean of Students at the University of BlahBlah has become very alarmed by the number of residence students who have gone to the Wellness Centre complaining of mysterious severe headaches. In order to understand the problem better, the local public health unit designed a surveillance exercise with a sample of residence students at the University of BlahBlah. The study included a sample of 100 student participants, and began on September 1^st and ended on December 1^st. The researchers did a survey with these students about their experience of a) daily stress and b) the occurrence of regular severe headaches on September 1^st, then re-administered this survey on December 1^st. The researchers found that on September 1^st 15 of the 100 students experienced regular severe headaches.   However, as of December 1^st a total of 21 students (including the original 15) reported experiencing regular severe headaches. Further, on September 1^st 20 of the 100 students were experiencing moderate to high levels of daily stress and on December 1^st 30 of the 100 students were experiencing moderate to high levels of daily stress.1. what is the incidence of this disease. 2 what is the prevalence as of December 1st. 3. what form of mechanism was used in this study.

Answer 1

1. what is the incidence of this disease.

Incidence refers to the proportion or rate of persons who develop a condition during a particular time period.It is the occurence of new cases.

Incidence of severe headache is 6/21

Incidence of daily stress is 10/30

2. what is the prevalence as of December 1st.

Prevalence refers to proportion of persons who have a condition at or during a particular time period

Prevalence of severe headache is 21/100.

Prevalence of daily stress is 30/100.

3. what form of mechanism was used in this study.

It is an analytical study. Health survey is used in the study. The incidence and prevalence are the two commonly used measures in epidemiology of disease. These two measures are related through the duration of disease.