Table 2. Subjects, Cases and Crude Rate (Cases per 10,000 Person-Years) by Histological Subtype of Lung Cancer in the Study Cohort (1958–1999).

		Adenocarcinoma		Squamous cell		Small cell
	Subjects	Cases	Rate	Cases	Rate	Cases	Rate
City
Hiroshima	73,414	439	2.20	246	1.23	141	0.71
Nagasaki	31,990	197	2.44	84	1.04	53	0.66
Attained age (years)
0–39		4	0.06	0	0	0	0
40–49		19	0.38	2	0.04	5	0.10
50–59		113	1.90	33	0.56	22	0.37
60–69		211	3.96	103	1.93	63	1.18
70–79		183	5.28	131	3.78	76	2.19
80+		106	6.82	61	3.92	28	1.80
Age at exposure (years)
0–9	22,681	53	0.76	8	0.12	4	0.06
10–19	23,057	124	1.72	46	0.64	23	0.32
20–39	30,073	282	3.07	119	1.29	92	1.00
40+	29,593	177	3.78	157	3.35	75	1.60
Calendar year
1958–1969		113	1.00	83	0.75	55	0.49
1970–1979		124	1.75	86	1.20	42	0.59
1980–1989		195	3.40	90	1.57	51	0.89
1990–1999		204	5.08	71	1.76	46	1.14