Table 3.

Clinicopathologic Characteristics at Presentation for Radiotherapy: Log-Rank Tests of Factors Predictive of Locoregional Recurrence-Free, Progression-Free, and Disease-Specific Survival

Prognostic Factor	No. of Patients (%)	Survival Analysis: Pa
		OS	DSD	LRR	DP
Stage		.03b	.003b	.68	.29
I and II	13 (27)
III	18 (38)
Recurrent	17 (35)
Lymph node status before RT		.11	.01b	.48	.009b
Negative	17 (35)
Positive	31 (65)
Positive/close margins		.70	.42	.87	.31
No	31 (65)
Yes	13 (27)
Unknown	4 (8)
Concurrent/adjuvant chemotherapy		.83	.26	.38	.99
No	42 (88)
Yes	6 (13)
RT dose to primary, Gy		.24	.89	.26	.54
<60	16 (33)
≥60	21 (44)
None	11 (23)

Abbreviations: DP, disease progression; DSD, disease-specific death; Gy, gray; LRR, locoregional recurrence; OS, overall survival; RT, radiotherapy.

^aP values were determined with the log-rank test (OS) or the Gray test (DSD, LRR, and DP).

^bStatistically significant.