2018-19 Section 7-Neoplastic and Inflammatory Diseases of the Head and Neck eBook

Oral Oncology 73 (2017) 152–159

K.Y. Zhan et al.

Fig. 2. (a) and (b) Kaplan Meier plots of overall survival by overall prognostic stage groups.

Number at Risk 12 months

24 months

36 months

48 months

Stage I Stage II Stage III

91

70

36 64

12 37

161 491

123 369

221 759

107 329

Stage IVa,IVb

1776

1316

Number at Risk 12 months

24 months

36 months

48 months

Stage I Stage II Stage III

2020

1532

875 179

396

443

310

80

55

41

26

8

180