What test can be used to compare cancer incidence rates between the two treatment groups? Cancer The

Question:

What test can be used to compare cancer incidence rates between the two treatment groups?

Cancer

The Physicians€™ Health Study was a randomized doubleblind placebo-controlled trial of beta-carotene (50 mg every other day). In 1982, the study enrolled 22,071 male physicians ages 40ˆ’84. The participants were followed until December 31, 1995, for the development of new cancers (malignant neoplasms). The results reported [20] are shown in Table 10.34.

Table 10.34: Comparison of cancer incidence rates between the beta-carotene and placebo groups

Beta-carotene Placebo (n = 11,036) (n =11,035) Malignant neoplasms 1273 1293