Table 1.

Distribution of cases, the number of deaths according sex, age, and period.

	Number of persons at risk	%	Number of deaths
Sex
Male	333	87.6	252
Female	47	12.4	27
Total	380	100	279
Age
0–39	14	3.6	9
40–64	262	68.9	195
65+	104	27.3	75
Location
Base of tongue	143	37.6	115
Tonsil	119	31.4	80
Soft palate	34	8.9	25
Oropharynx	84	22.1	59
Period
1978–1986	100	26.3	67
1987–1994	139	36.5	112
1995–2002	141	37.1	100