Table 2.

Arithmetic steps in definition of INC(h,t), the age-specific incidence rate for cohort h corrected for historically improving 5-year survival rates, SUR(h,t), shown here for lower GI tract cancer for two birth-decade cohort intervals of birth, h = 1890–99, and h = 1900–09. Applies eq. 4.

Age at death interval, t	OBS(h,t)	OBS*(h,t)	SUR(h,t)	INC(h,t)	OBS*(h,t)	SUR(h,t)	INC(h,t)
	h = 1890–9	h = 1890–9	h = 1890–9	h = 1890–9	h = 1900–9	h = 1900–9	h = 1900–9
15–19	5.49E−06	5.49E−06	0.1	6.10E−06	4.96E−06	0.15	5.84E−06
20–24	1.02E−05	1.07E−05	0.1	1.19E−05	9.64E−06	0.2	1.21E−05
25–29	1.58E−05	1.59E−05	0.15	1.87E−05	1.72E−05	0.25	2.29E−05
30–34	3.02E−05	3.00E−05	0.2	3.76E−05	3.15E−05	0.3	4.50E−05
35–39	5.12E−05	5.09E−05	0.25	6.78E−05	5.54E−05	0.33	8.27E−05
40–44	1.02E−04	1.03E−04	0.3	1.47E−04	8.88E−05	0.33	1.33E−04
45–49	1.81E−04	1.83E−04	0.33	2.74E−04	1.49E−04	0.4	2.48E−04
50–54	2.99E−04	3.12E−04	0.33	4.65E−04	2.57E−04	0.4	4.28E−04
55–59	4.74E−04	4.92E−04	0.4	8.20E−04	4.46E−04	0.44	7.96E−04
60–64	7.61E−04	7.87E−04	0.4	1.31E−03	7.48E−04	0.44	1.34E−03
65–69	1.16E−03	1.22E−03	0.44	2.18E−03	1.18E−03	0.44	2.11E−03
70–74	1.69E−03	1.80E−03	0.44	3.21E−03	1.76E−03	0.44	3.14E−03
75–79	2.30E−03	2.52E−03	0.44	4.49E−03	2.44E−03	0.44	4.36E−03
80–84	3.04E−03	3.44E−03	0.44	6.15E−03	3.27E−03	0.44	5.84E−03
85–89	3.82E−03	4.60E−03	0.33	6.86E−03	4.14E−03	0.44	7.39E−03
90–94	4.46E−03	5.91E−03	0.22	7.58E−03	4.72E−03	0.33	7.04E−03
95–99	4.24E−03	6.56E−03	0.11	7.37E−03	5.51E−03	0.22	7.06E−03
100–104	2.93E−03	4.91E−03	0	4.91E−03	3.85E−03	0.11	4.33E−03