Can someone please verify I correctly solved this problem?

The objective of a prospective study by Strenestrand et al. (a-20) was to compare the mortality rate following an acute myocardial infarction(AMI) among subjects receiving early revascularization to the mortality rate among subjects receiving conservative treatments. Among 2554 patients receiving revascularization within 14 days of AMI, 84 died in the year following the AMI. In the conservative treatment group(risk factor present), 1751 of 19,358 patients died within a year of AMI. Compute the relative risk of mortality in the conservative treatment group as compared to the revascularization group in patients experiencing AMI.

My solution:

RR=1751/19358 / 84/2554= 2.73, this data shows a positive association and indicates a 2.73 times relative risk in the conservative treatment group as compared to the revascularization group.

X^2=94, my 95%CI= 2.23 and 3.34, so since the interval does not include 1 we reject the Ho and conclude there is an association between treatments and mortality, P<.05