TABLE 5.

Variables analyzed for correlation with prognosis in 123 dogs with tonsillar carcinoma

Variable	Categories	No. of dogs	MST [95% CI]	P *
Clinical signs	Present	92	113 [78‐148]	.04
	Absent	31	185 [141‐230]
Clinical stage	No metastatic disease	29	381 [116‐646]	<.001
	One metastatic lymph node	40	153 [64‐242]
	Multiple metastatic lymph nodes or distant metastasis	54	88 [40‐136]
Surgery	Tonsillectomy +/− lymphadenectomy	68	196 [106‐286]	.001
	Incisional biopsy or no surgery	55	88 [67‐109]
Chemotherapy	Sole treatment	25	109 [71‐147]	.001
	Adjuvant chemotherapy	50	207 [53‐361]
	No chemotherapy	48	109 [0‐240]
Use of nonsteroidal anti‐inflammatory drugs	Yes	102	151 [105‐197]	.03
	No	21	54 [27‐81]

^*Significance was set at <.05.