Table 3. Association of high vs low scoring subgroup with clinical characteristics.

Characteristic	High Scoring Group (n = 168)		Low Scoring Group (n = 157)		P value
	No.	%	No.	%
Age, mean [range]	58.5 [39–87]		60 [34–87]		.78
Tumor stage
II	11	6.5	4	2.55	.21
III	128	76.2	126	80.3
IV	29	17.3	26	16.6
Missing, No.	0	0	1	0.6
Tumor grade
2	12	7.3	13	8.3	.06
3	153	92.7	139	88.5
Missing, No.	0	0	5	3.2
Residual tumor size, cm
0	37	22	23	14.6	.48
<1	76	45.2	82	52.2
1–2	7	4.2	8	5.1
>2	29	17.3	28	17.8
Missing, No.	19	11.3	16	10.2