Incidence, mortality, and temporal patterns of oropharyngeal cancer in China: a population-based study

Cancer Communications

Table 1 Oropharyngeal cancer (OPC) incidence in China, 2008–2012

Areas/region	Sex	No. of cases	Incidence (1/100,000)			Cumulative rate (0–74 years old, %)
Areas/region	Sex	No. of cases	Crude	ASRIC	ASRIW	Cumulative rate (0–74 years old, %)
All	Both sexes	20,618	3.28	2.27	2.22	0.25
	Male	13,582	4.26	3.00	2.96	0.34
	Female	7036	2.26	1.55	1.49	0.17
Urban areas	Both sexes	14,505	3.79	2.54	2.48	0.28
	Male	9568	4.96	3.38	3.32	0.38
	Female	4937	2.60	1.72	1.65	0.19
Rural areas	Both sexes	6113	2.48	1.82	1.77	0.21
	Male	4014	3.20	2.37	2.34	0.28
	Female	2099	1.73	1.27	1.22	0.14
Eastern regions	Both sexes	15,433	3.49	2.31	2.25	0.26
	Male	10,171	4.56	3.07	3.02	0.35
	Female	5262	2.40	1.56	1.50	0.17
Central regions	Both sexes	3627	2.75	2.14	2.09	0.24
	Male	2399	3.55	2.81	2.77	0.32
	Female	1228	1.91	1.48	1.43	0.16
Western regions	Both sexes	1558	2.86	2.25	2.21	0.25
	Male	1012	3.64	2.94	2.91	0.33
	Female	546	2.04	1.58	1.53	0.17

Cumulative rates, the rates for patients aged 0–74 years, are a special form of standardized rates in which equal weights are given for all 5-year age groups up to a defined upper age limit, which in this case is 75 years. For each year included in the present study, age-specific rates were computed and multiplied by the length of the age group in years (5 years). These were then summed to derive the cumulative incidence rates
ASRIC age-standardized rate of incidence by 2000 Chinese standard population, ASRIW age-standardized rate of incidence by 1985 Segi’s world standard population

ISSN: 2523-3548