Probabilities of developing cancer over the life span of a Japanese--update.
In a previous study, we investigated the probability of developing cancer in the entire life span of a Japanese using population-based cancer incidence data from 1994, to obtain a relevant index of the impact of cancer occurrence on the Japanese population (APJCP, 1: 333-336, 2000). In the present paper, we have updated the information using the latest reports on cancer incidence in Japan in 1998. A method based on the cumulative risk of cancer was employed to estimate the probability of developing cancer up to 84 years of age, the average life expectancy of a Japanese female, and 79 years of age, the average life expectancy of a Japanese male. The time trend was also analyzed from 1975-1998. The cumulative risk of developing cancer in any site up to 84 and 79 years of age was 45% and 36% for males, 27% and 21% for females, and 35% and 28% for both genders, respectively. The cumulative risk showed an increasing time trend before leveling-off after 1985. From our results, it is expected that nearly one-third of Japanese males and one-fourth of Japanese females will develop cancer by the time they reach the average life expectancy.
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D015994:Incidence; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000453:epidemiology*; D011336:Probability; D012306:Risk