+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Trends in the mortality and incidence of malignant ovarian neoplasm among Japanese women Analyses by age, time, and birth cohort

Trends in the mortality and incidence of malignant ovarian neoplasm among Japanese women Analyses by age, time, and birth cohort

Gynecologic Oncology 83(1): 64-71, October

Objective. The purpose of this study was to explore epidemiological features of malignant ovarian neoplasm in Japan. Methods. The number of deaths from malignant ovarian neoplasm was obtained from the national vital statistics. Estimated incidence rates, based on several cancer registries, were also used for analyses. We divided the subjects into two age groups (0-29 and 30+ years) and examined secular trends in mortality (1950-1997) and incidence (1975-1993) by age, time, and birth cohort. Results. The age-adjusted mortality rate has increased approximately 4-fold (from 0.9 to 3.6 per 100,000 women) from 1950 to 1997. Age-specific mortality rates showed a rising pattern in the elderly, whereas mortality in the younger people tended to increase in the 1950s and 1960s, but then decreased in the 1970s and afterward. In analyses using a mathematical model, the time effect in the population aged 0-29 years increased with advancing period up to 1970, and then decreased. The cohort effects had positive values, which indicate higher than additive influence from age/time effect, for birth cohorts from 1900 to 1935. The age-adjusted incidence rate increased approximately 1.5-fold (from 3.6 to 5.7) from 1975 to 1993. The rate increased in the early 1980s, but has remained stable since the late 1980s. Age-specific incidence rates in older age groups increased steadily up to 1985, and have remained stable since, while the rates in younger women have remained almost unchanged. Conclusion. The major effects on malignant ovarian neoplasm Japan are supposed to be due to declining parity and therapeutic improvements.

(PDF 0-2 workdays service: $29.90)

Accession: 035985608

Download citation: RISBibTeXText

Related references

Trends in the mortality (1950-1997) and incidence (1975-1993) of malignant ovarian neoplasm among Japanese women: analyses by age, time, and birth cohort. Gynecologic Oncology 83(1): 64-71, 2001

Time trends in ovarian cancer incidence in Navarra (1973-1995): effect of age, birth cohort and period of diagnosis. Anales del Sistema Sanitario de Navarra 24(2): 159-166, 2003

Time trends in ovarian cancer mortality in Europe (1955-1993): Effect of age, birth cohort and period of death. European Journal of Cancer 36(14): 1816-1824, 2000

Malignant neoplasm related mortality and morbidity of hypertensive outpatients in Japanese men and women. Journal of Insurance Medicine 43(4): 233-243, 2013

Time trends of esophageal cancer in Hong Kong: age, period and birth cohort analyses. International Journal of Cancer 120(4): 853-858, 2006

Birth-cohort phenomenon in the time trends of mortality from ulcerative colitis. American Journal of Epidemiology 150(4): 359-366, 1999

Trends in AIDS incidence among women in the United States A birth cohort analysis. ELEVENTH INTERNATIONAL CONFERENCE ON AIDS Eleventh International Conference on AIDS, Vol Two One world: One hope : 230, 1996

Descriptive epidemiological study of food intake among Japanese adults: analyses by age, time and birth cohort model. Bmc Public Health 14(): 328-328, 2015

Time trends of mortality from colorectal cancer in the United States: a birth-cohort analysis. JAMA Internal Medicine 173(12): 1148-1150, 2013

Mortality time trends 30-74 years by birth cohort 1889-1968 in Italian Regions. Epidemiologia E Prevenzione 35(5-6 Suppl 2): 50-67, 2012

Trends in breast cancer mortality among Swedish women 1953-92: Analysis by age, period and birth cohort. British Journal of Cancer 72(2): 493-497, 1995

Trends in gastric cancer incidence in a well-defined French population by time period and birth cohort. European Journal of Cancer Prevention 11(3): 221-227, 2002

Effects of maternal age and cohort of birth on incidence time trends of childhood acute lymphoblastic leukemia. Cancer Epidemiology, Biomarkers & Prevention 16(2): 347-351, 2007