TABLE 2.

Cohort Distribution and Crude Solid Cancer Mortality Rates by Select Characteristics Among Techa River Cohort Members

Characteristic	Person-years	Solid cancer cases	Rate per 10,000 person years
Total	927,743	2,303	24.8
Sex
Men	373,599	1,188	31.8
Women	554,144	1,115	20.1
Age at entry (year)
0–19	438,753	558	12.7
20–39	327,647	951	29.0
40+	161,343	794	49.2
Entry oblast
Chelyabinsk	620,809	1,654	26.6
Kurgan	306,933	649	21.1
Entry period
1950–1952	795,920	1,941	24.4
1953–1960	131,823	362	27.5
Ethnicity
Slav	706,698	1,803	25.5
Tatar/Bashkir	221,045	500	22.6
Attained age (year)
0–19	100,137	3	0.3
20–39	254,725	67	2.6
40–59	331,223	687	20.7
60–69	136,055	760	55.9
70–79	77,622	613	79.0
80+	27,981	173	61.8