Table 4. Mean and median survival time.

	Meana				Median
	Estimate	Std. error	95% confidence interval		Estimate	Std. error	95% Confidence interval
			Lower bound	Upper bound			Lower bound	Upper bound
Overall	45.079	1.821	41.511	48.648	60.000	.964	58.111	61.889
TP53 value
Positive	44.258	2.214	39.918	48.597	60.000	2.669	54.769	65.231
Negative	46.676	3.246	40.314	53.039
Positivity
Mild	53.500	3.618	46.409	60.591	60.000
Moderate	36.994	4.513	28.148	45.841	32.000	3.737	24.676	39.324
Strong	43.894	3.107	37.805	49.983	60.000	4.226	51.717	68.283
Negative	46.676	3.246	40.314	53.039
AJCC_STAGE
I	49.944	4.093	41.921	57.967
II	51.417	2.432	46.652	56.183
II	44.831	3.397	38.173	51.488	60.000	7.122	46.041	73.959
IV	31.809	4.514	22.962	40.656	19.000	9.947	0.000	38.496
Final T stage
T1	50.711	3.441	43.966	57.456
T2	46.970	2.474	42.122	51.819	60.000	1.360	57.335	62.665
T3	43.905	4.815	34.468	53.342	60.000	11.148	38.149	81.851
T4	32.813	5.390	22.249	43.376	26.000	11.006	4.429	47.571
Final N stage
N0	49.019	1.938	45.220	52.818
N1	37.211	4.386	28.614	45.808	32.000	4.718	22.753	41.247
N2a	12.500	.500	11.520	13.480	12.000
N2b	28.857	8.385	12.423	45.292	19.000	6.547	6.169	31.831
Neck pathology
Negative	50.211	2.208	45.884	54.539
Positive	37.573	3.880	29.969	45.178	40.000	7.767	24.776	55.224
ND	42.464	4.081	34.465	50.462	60.000	11.262	37.927	82.073