Table 1:

Number of individuals diagnosed with oropharyngeal, oral cavity, or hypopharyngeal/laryngeal squamous cell carcinomas in the SEER Cancer Registry (1973–2015) by covariate and number of people at risk (i.e., not dead or censored) 5, 10, and 15 years after diagnosis.

Covariate	At diagnosis		5 years		10 years		15 years
	N	%	N	%	N	%	N	%
All	180,434		69,469		33,066		13,722
Age
<50	24,386	13.5%	12,309	17.7%	7,317	22.1%	3,661	26.7%
50–59	52,689	29.2%	22,372	32.2%	11,406	34.5%	5,027	37.0%
60–69	55,881	31.0%	21,348	30.7%	9,746	29.5%	3,873	28.2%
70+	47,478	26.3%	13,440	19.3%	4,597	13.6%	1,161	8.5%
Sex
Male	135,416	75.1%	51,986	74.8%	24,503	74.1%	9,964	72.6%
Female	45,018	24.9%	17,483	25.2%	8,563	25.9%	3,758	27.4%
Race
White	150,160	83.2%	59,845	86.1%	28,565	86.4%	11,870	86.5%
Black	21,563	12.0%	6,263	9.0%	2,818	8.5%	1,107	8.1%
Other/unknown	8,711	4.8%	3,361	4.8%	1,683	5.1%	745	5.4%
Anatomical site
Oropharynx	60,859	33.7%	21,579	31.1%	9,110	27.6%	2,943	21.4%
Oral cavity	48,834	27.1%	18,444	26.5%	8,592	26.0%	3,881	28.3%
Hypopharynx & larynx	70,741	39.2%	29,446	42.4%	15,004	45.4%	6,898	50.3%
Tumor stage
Localized	47,790	26.5%	27,098	39.0%	15,829	47.9%	7,854	57.2%
Regional	80,653	44.7%	28,422	40.9%	13,237	40.0%	4,853	35.4%
Distant	19,212	10.6%	3,356	4.8%	1,230	3.7%	524	3.8%
Unstaged	32,779	18.2%	10,593	15.2%	2,770	8.4%	599	4.4%
Year of diagnosis
1973–1984	24,863	13.8%	10,998	15.8%	7,093	21.5%	4,482	32.7%
1985–1999	39,461	21.9%	18,504	26.6%	12,042	36.4%	7,840	57.1%
2000–2015*	116,110	64.4%	39,967	57.5%	13,931	42.1%	1,400	10.2%

^*More recent diagnoses have not yet made it to 5, 10, or 15 years after diagnosis.