Koos Boeve

44 Chapter 2 Followg E 11 E18 0 1 2 3 4 5 0 20 40 60 80 100 th 1 S gclassification pT1 pT2 Number at risk pT1 122 115 1V9 99 91 77 pT2 89 71 64 55 49 43 Followg1 E 11 E18 0 1 2 3 4 5 0 20 40 60 80 100 pT2 pT1 pT3 th 1 S1 gclassification Number at risk pT1 68 66 62 58 54 48 pT2 113 97 9V 8V 71 6V pT3 3V 23 21 16 15 12 Followg1 E 11 E18 0 1 2 3 4 5 0 20 40 60 80 100 th 1 S gclassification pN1 pNV pN2 pN3 WW Number at risk WW 38 37 37 34 31 3V pNV 1V1 94 89 8V 73 63 pN1 3V 26 23 22 19 16 pN2 41 28 24 18 17 11 pN3 1 1 V V V V Followg E 11 E18 0 1 2 3 4 5 0 20 40 60 80 100 th 1 S gclassification pN1 pNV pN2 pN3 WW Number at risk WW 38 37 37 34 31 3V pNV 1V1 94 89 8V 73 63 pN1 24 21 19 18 16 14 pN2 25 26 23 18 16 11 pN3 23 8 5 4 4 2 Followg1 E 11 E18 0 1 2 3 4 5 0 20 40 60 80 100 th 1 S 1 gstaging 1 1 1 WW 1 Number at risk WW 38 37 37 34 31 3V 1 49 47 38 1 31 26 25 1 V 26 23 22 19 16 1 18 17 11 Followg E 11 E18 0 1 2 3 4 5 0 20 40 60 80 100 th 1 S gstaging 1 1 1 1 WW Number at risk WW 38 37 37 34 31 3V 1 27 25 21 1 V 48 44 39 34 1 27 25 22 1 22 2V 13 Figure 3. Disease specific survival Kaplan – Meier curves for the 7 th edition (A+C+E) and 8 th edition (B+D+F) TNM classifications. Five-year survival rates with their 95% confidence intervals for each disease specific survival curve and log-rank test are given in Table 2. Abbreviations: AJCC, American Joint Committee on Cancer; ed., edition; DSS, disease specific survival; N, nodal; T, tumour; WW, watchful waiting