Question

A heightened number of typhoid cases were discovered in a highly productive farming community. It was determined that one of the three that one of the three water supplies was contaminated. 1150 cases reported using the contaminated water source, whereas 200 cases reported using a different water source. The total population of this farming community is 98,400 and 49,200 individuals are believed to have been exposed. From the following 2x2 table, created by scientists investigating a potential sanitation emergency, calculate the odds ratio. Include an interpretation statement when reporting your answer.

	Disease	No Disease
Exposed	1150	48050
Unexposed	200	49000

Answer 1

the table is :-

	disease	no disease
Exposed	1150 (a)	48050 (b)
Unexposed	200 (c)	49000 (d)

the odds ratio be:-

interpretation:-

here, the odds ratio (OR)= 5.86 > 1

−so, we can say that, exposure is positively related to the disease.

if you have the disease you are 5.86 times more likely to drink the exposed water than you had not the disease.

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