Table 2.

The time trend of cost of illness (COI) of colorectal cancer

	1996	1999	2002	2005	2008	2011		2014	2017	2020
Population (thousand person)	125,864	126,686	127,435	127,768	127,692	127,799		126,949	126,707	123,214
[% of those 65 years or older]	15.1%	16.7%	18.5%	20.2%	22.1%	23.3%		26.1%	27.7%	28.7%
Number of deaths (person)	32,617	35,360	37,668	40,830	43,006	45,563		48,481	50,679	51,785
[% of those 65 years or older]	69.4%	72.5%	75.3%	77.2%	79.6%	80.2%		82.6%	85.5%	87.2%
Number of incidence (person)	83,108	90,289	105,195	104,056	112,772	124,921		135,434	153,189	155,625※
[% of those 65 years or older]	60.8%	64.0%	65.9%	67.7%	70.9%	70.4%		73.5%	76.4%	77.2%
Crude mortality/incidence rate	39.2%	39.2%	35.8%	39.2%	38.1%	36.5%		35.8%	33.1%	33.3%
Average age of incidence (year)	67.2	68.1	68.7	69.4	70.4	70.7		71.0	71.6	71.9
Average age of death (year)	70.3	71.2	72.2	73.1	74.0	74.6		75.1	75.9	76.5
Direct cost (billion yen)	165.2	250.8	289.4	274.9	367.8	367.5		436.8	460.1	417.3
Morbidity cost (billion yen)	51.8	61.7	63.5	71.4	64.0	66.1		67.8	68.9	74.2
Mortality cost (billion yen)	633.3	630.2	729.9	723.9	728.4	821.4		837.2	897.9	959.5
COI (billion yen)	850.3	942.7	1,082.8	1,070.2	1,160.2	1,255.0		1,341.8	1,427.0	1,451.0
COI per person (yen)	6,755.5	7,440.9	8,497.0	8,376.3	9,085.6	9,819.9		10,569.5	11,262.2	11,776.2

Source of population: Ministry of Internal Affairs and Communications “Population Estimates”

Source of the number of cancer deaths: “Vital Statistics”

Source of the number of incidence: Center for Cancer Control and Information Services, National Cancer Center, Japan.

Average age of incidence: Calculated according to the number of incidence.

Average age of death: Calculated according to the number of deaths, sex and age (five-year old age-grade), cause of death in “Vital Statistics.”

※ 2019 data.