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Table 1 Distribution by age in 1968 versus vital status in 2017 of Japanese Yusho patients

From: Mortality in Yusho patients exposed to polychlorinated biphenyls and polychlorinated dibenzofurans: a 50-year retrospective cohort study

  Males (n = 860) Females (n = 804)
No. (%) No. (%)
Age in 1968
 < 20 345 (40.1) 305 (37.9)
 20–29 94 (10.9) 99 (12.3)
 30–39 126 (14.7) 136 (16.9)
 40–49 140 (16.3) 130 (16.2)
 50–59 82 (9.5) 68 (8.5)
 60–69 49 (5.7) 43 (5.3)
 70–79 20 (2.3) 21 (2.6)
> 80 4 (0.5) 2 (0.2)
Vital status of 31 December 2017
 Alive 500 (58.1) 521 (64.8)
 Dead 360 (41.9) 283 (35.2)
 Person-years of follow-up 31,559 32,007