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. Author manuscript; available in PMC: 2019 May 1.
Published in final edited form as: Head Neck. 2018 Feb 1;40(5):1008–1015. doi: 10.1002/hed.25079

Table 1.

Table of clinical factors in the nomogram generating cohort and validation cohort. (N/A – too few cases in some groups for analysis)

Factor Original
Cohort
N=301
% Validation
Cohort
N=123
% p

Age (years) Median (Q1, Q3) 62 (50, 71) 60 (47.5, 70) .489

Sex Male 156 52 59 48 .471
Female 145 48 64 52

T Stage cT1/Tx 76 25 47 38 .263
cT2 129 43 52 42
cT3 64 21 10 8
cT4 32 11 12 10
NK* 2 2

N stage N0 264 88 99 80 N/A
N1 13 4 5 4
N2 24 8 18 15
N3 0 0 1 1

Follow up (Months) Median (Q1,Q3) 45.6 (20, 98) 19 (10, 33) <0.001
*

NK = not known. These patients were not included in statistical test