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. 2012 Nov 19;7:193. doi: 10.1186/1748-717X-7-193

Table 1.

Patient (n – 141) Characteristics and Univariate Analysis for Impact on Local Control

Characteristic # of Patients (range or %) p value
Mean Age (yrs) at end of radiation
67 (33–94)
0.9055
Gender
 
0.3902
   male
125 (88.7%)
 
   female
16 (11.3%)
 
Race
 
0.1133
   Caucasian
119 (84.4%)
 
   Non-caucasian
22 (15.6%)
 
Median Pack Years
44 (0–135)
0.6769
Smoker
 
0.3530
   Never
12 (8.5%)
 
   Former
92 (65.2%)
 
   Current
32 (22.7%)
0.5568
   Unknown
5 (3.5%)
 
Heavy Alchohol Use
 
0.0630
   Never (Reference)
89 (63.1%)
 
   Former
21 (14.9%)
0.8836
   Current
19 (13.5%)
0.0222
   Unknown
12 (8.5%)
 
Ant Commissure
 
0.0505
   Involved
71 (50.3%)
 
   Non Involved
52 (36.9%)
 
   Unknown
18 (12.8%)
 
Tumor Bulk
 
0.6386
   Bulky
55 ( 39%)
 
   Non bulky
86 ( 61%)
 
Hemoglobin (g/dL)
14.2
 
Grade
 
0.6614
   Well (Reference)
43 (30.5%)
 
   Moderate
57 (40.4%)
0.7192
   Poor
14 (10%)
0.3646
   Unknown
27 (19.1%)
 
Stage (T2b vs T1a/b/2a)
 
0.0205
   1a
65 ( 46%)
0.0033
   1b
21 (14.9%)
0.1766
   2a
29 (20.6%)
0.0621
   2b (Reference)
25 (17.7%)
 
   Unknown
1 (1%)
 
Subglottic Ext
 
0.0505
   Yes
18 (12.8%)
 
   No
96 (68.1%)
 
   Missing
27 (19.2%)
 
Supraglottic Ext
 
0.4668
   Yes
30 (21.2%)
 
   No
87 (61.7%)
 
   Missing
24 (17%)
 
Median Overall Treatment Time (wks)
6.5 (4–9.7)
 
Radiation Dose (cGy) as Continous
6820 (6300–7264)
0.0367
   ≤66 Gy
45
 
   > 66 Gy
96
 
Median Dose/Fraction
212 (176–256)
0.1353
   ≤2Gy/fx
45 (31.9%)
 
   >2Gy/fx
95 (67.4%)
 
missing
1 (1%)
 
Mean Follow-Up (month) 67.7 (0–239)