Table 1.

Participant characteristics, by non-OPC versus OPC.

Characteristics	Non-OPC		OPC		p-value
	N= 222		N= 38
	N	%	N	%
Age at Diagnosis (years)
Median (IQR)	62	53–73	53.5	51–60	0.002
Gender
Male	159	71.6	32	84.2	0.11
Female	63	28.4	6	15.8
Race
Caucasian	213	96	38	100.0	NE
Asian	2	0.9	0	0.0
African American	7	3.2	0	0.0
Smoking Historya
No	47	21.2	13	34.2	0.07
Yes	172	77.8	25	65.8
Alcohol History
No	81	37.5	8	21.1	0.06
Yes	135	62.5	30	79.0
Tumor Grade
Moderate	139	62.6	19	50.0	0.10
Not Evaluated	31	14	9	23.7
Poor	33	14.9	10	26.3
Unknown	1	0.5	0	0.0
Well	18	8.1	0	0.0
Tumor Stage
I	59	26.6	3	7.9	0.14
II	34	15.3	4	10.5
III	45	20.3	11	29.0
IVA	81	36.5	18	47.4
IVB	3	1.4	1	2.6
IVC	0	0.0	1	2.6
Treatment
Surgery	125	56.3	6	15.8	<0.001
Surgery + Radiation + Chemob	52	23.4	13	34.2
Surgery + Radiationb	31	14.0	6	15.8
Radiation + Chemob	11	5.0	13	34.2
Radiationb	2	1.0	0	0.0
Surgery + Chemob	1	0.5	0	0.0

^aDoes not sum to 100% due to missing data (n=3)

^bIncludes participants who additionally received other treatments (i.e.: experimental vaccine, brachy, EGFR inhibitor; n=16 total)