Figure 6

Comparison of two different definitions of disease-free survival (DFS) in patients curatively treated for colorectal cancer stage stage II (n = 149) and III (n = 122). For DFSa only second primary same cancer was included as an event and second primary other cancer was ignored. For DFSb all second primary cancers were counted as an event. The cumulative proportion with standard deviations at 3, 5 and 7 years are given.