Sociodemographic variables
| | | | | | | | |
Age: <40 v 40~60 v ≥ 60 years
|
0.922
|
0.016
|
0.942
|
NS
|
0.926
|
0.013
|
0.939
|
NS
|
Gender: female v male
|
0.890
|
<0.01
|
0.877
|
<0.01
|
0.919
|
0.018
|
0.963
|
NS
|
Education years: ≤ 6 v 6~12 v >12
|
0.914
|
0.011
|
0.928
|
NS
|
0.920
|
0.033
|
0.941
|
NS
|
Marital status: with v without spouse
|
0.958
|
0.042
|
0.951
|
NS
|
0.975
|
NS
|
0.968
|
NS
|
Annual family income: < 0.6 v 0.6~1.2 v ≥ 1.2 (million NTD)
|
0.845
|
<0.01
|
0.896
|
0.032
|
0.866
|
<0.01
|
0.910
|
NS
|
Clinical variables
| | | | | | | | |
CCI score: 0 v ≥ 1
|
0.937
|
0.001
|
0.910
|
NS
|
0.965
|
NS
|
0.935
|
NS
|
Tumor site: Oral cavity v Oropharynx v Hypopharynx/Larynx v Nasopharynx
|
0.805
|
<0.01
|
0.828
|
<0.01
|
0.618
|
<0.01
|
0.824
|
<0.01
|
AJCC stage: stage I-II v III-IV
|
0.870
|
<0.01
|
0.863
|
<0.01
|
0.880
|
<0.01
|
0.869
|
NS
|
Treatment methods: S + RT v S + RT+ C/T v RT±C/T
|
0.865
|
<0.01
|
0.845
|
<0.01
|
0.832
|
<0.01
|
0.906
|
NS
|
RT technique: 2DRT v 3DCRT v IMRT
|
0.888
|
<0.01
|
0.876
|
<0.01
|
0.869
|
<0.01
|
0.829
|
<0.01
|
Follow-up years: 2~3 v 3~5 v > 5
|
0.937
|
NS
|
0.928
|
NS
|
0.933
|
NS
|
0.938
|
NS
|