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To test the efficacy of a health education program in reducing the risk of foodborne and waterborne diseases, the residents of two Peruvian villages were given an intensive health education program. At the end of two years, the incidence rates of important waterborne and foodborne diseases in these villages were compared with those in two similar control villages without any education program. Which of the following study designs most appropriately characterizes this situation?
Null Hypothesis
The presumption of no association or effect between variables until evidence suggests otherwise.
Dependent-Samples T Test
A statistical test applied to compare the means of two related groups of samples, typically used when the samples are paired or matched in some way.
Capital Intensity Ratio
A measure of how much capital is used in production, often expressed as the ratio of total assets to sales revenue.
Full Capacity
The maximum level of production or output that a facility can achieve under normal operating conditions.
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