50,000 individuals were living at a refugee camp in Sudan. The WHO conducted research to determine the nutrition status of the refugees and study whether they were free of Giardia infection. After one month, the 25,000 individuals who were free of Giardia at baseline were re-examined to determine the incidence of Giardia infection. The data below were obtained.

Sex and level of nutrition at the start of the study	# of cases with Giardia infection	# of people without Giardia infection	Total
Males
Malnourished	2,300	1,700	4,000
Well-nourished	1,600	5,400	7,000
Females
Malnourished	3,800	2,200	6,000
Well-nourished	1,500	6,500	8,000
Total	9,200	15,800	25,000

Calculate the cumulative incidence of Giardia for malnourished men. Show your work.

Calculate the cumulative incidence of Giardia for all men. Show your work.

Within the malnourished group, what is the relative risk of Giardia for men compared women? Hint: The malnourished women are the referent group. Show your work.