1.A study conducted to measure the rate of developing Malaria in Nigeria. A researcher enrolled 100 participants who have been determined to not have Malaria and plans to follow these participants over one year to see who develops Malaria, beginning on January 1st. Participants visit a doctor monthly, at the end of the month, to determine if they have Malaria. After one year, 5 of the participants have developed Malaria. Two participants had Malaria diagnosed at the end of March. Two participants were diagnosed with Malaria at the end of August. One participant had Malaria diagnosed at the end of November.
1) Calculate the person-months contributed by the study participants, assuming that patients became cases of Malaria on the last day of the month when they were diagnosed?
2) What is the incidence rate of Malaria cases in this study?
Sample Solution