Consider the follow-up study data from the Evans County (Georgia) Heart Disease Study described by Cassels (1971). The data pertain to a cohort of 609 healthy white males between the ages of 40 and 76 who were residents of Evans County in 1960. The cohort was followed for 7 years, after which new cases of coronary heart disease (CHD) were identified. The level of circulating catecholamine (CAT) is the exposure variable of interest (defined as 1 = high and 0 = normal). The purpose of the study was to assess the putative association between CAT (as measured in 1960) and the subsequent 7-year incidence of CHD controlling for other potential confounders.

What is the value of the test statistic for the omnibus null hypothesis H0?

a. 36.09 b. 39.96 c. 40.46 d. Any of the above e. None of the above

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