scholarly journals Urban and rural stroke mortality rates in China between 1988 and 2013: An age-period-cohort analysis

2017 ◽  
Vol 45 (2) ◽  
pp. 680-690 ◽  
Author(s):  
Jingjing Li ◽  
Boyang Li ◽  
Fengfan Zhang ◽  
Yang Sun
Keyword(s):  
Cohort Analysis ◽  
Cumulative Risk ◽  
Population Data ◽  
Mortality Rates ◽  
Mortality Data ◽  
Period Effect ◽  
Stroke Mortality ◽  
Health Statistics ◽  
Rural Regions ◽  
Period Effects

Objective To evaluate effects attributable to age, time period and birth cohort, on stroke mortality data from urban and rural regions in China between 1988 and 2013. Methods Mortality data were obtained from the Chinese Health Statistics Annual Report (1987–2001) and Chinese Health Statistics Yearbooks (2003–2014). Population data were obtained from population censuses (i.e. 1982, 1990, 2000 and 2010). Data were analysed using an age-period-cohort (APC) model and intrinsic estimation (IE) method. Results The age effect suggested that all older residents had higher stroke mortality risk than younger residents. Period effect showed that compared with figures for 1988, stroke mortality in 2013 was 1.8 times higher for urban regions and 2.4 times higher for rural regions. After controlling for age and period effects, cohorts born before the Chinese economic reform had a steady decline in stroke mortality. However, mortality rates increased and fluctuated in post-reform cohorts. Conclusions This APC-IE analysis identified a modest period effect with large age and cohort contributions to both the overall mortality and the disparity between urban and rural stroke mortality. Identifying early life and cumulative risk factors for stroke, improving equality in stroke prevention and care are needed to reduce the stroke mortality in China.

Effects of age, period, and cohort on stroke mortality among the Lithuanian urban population during the 24-year follow-up period

Open Medicine ◽  
2008 ◽  
Vol 3 (3) ◽  
pp. 315-321
Author(s):  
Regina Rėklaitienė ◽  
Marius Noreika ◽  
Abdonas Tamošiūnas ◽  
Dalia Virvičiūtė ◽  
Diana Šopagienė
Keyword(s):  
Poisson Regression ◽  
Regression Models ◽  
Urban Population ◽  
Goodness Of Fit ◽  
Mortality Rates ◽  
Mortality Data ◽  
Period Effect ◽  
Stroke Mortality ◽  
Men And Women ◽  
European Standard Population

AbstractThe main purpose of this paper was to assess the effects of age, period, and cohort on stroke mortality among the urban Lithuanian population. Routine stroke mortality data among the Lithuanian urban population aged 25–64 years (1041 men and 724 women) between 1980 and 2004 were obtained from the official Kaunas region mortality register and classified by codes 430–438 and 160–169 in the 9th and 10th revisions of the International Classifications of Diseases (ICD), respectively. Mortality rates per 100,000 persons for men and women were age-adjusted using the age distribution of the European Standard Population. Goodness of fit of the Poisson regression models was evaluated using the Pearson and Freeman-Tukey residuals. During the study period, mortality rates decreased from 46.8 to 33.0 per 100,000 for men, and from 20.2 to 18.1 per 100,000 for women (average annual decrease of −1.3%, p<0.1 for men, and −1.6%, p<0.03 for women). An age effect was present in both sexes. The definite upward period effect was observed from 1990 to 1994 both among men and women, and was followed by a sharp fall during 2000–2004. Cohort and period effects have contained relevant information that partially explained trends in stroke mortality among 25–64 year-olds in the Lithuanian urban population. The Poisson regression models could be applied for the examination and explanation of the different causes of the population mortality.

scholarly journals Age period cohort analysis of chewing ability in Korea from 2007 to 2018

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Nam-Hee Kim ◽  
Ichiro Kawachi
Keyword(s):  
Cohort Analysis ◽  
Cohort Effect ◽  
Cohort Effects ◽  
Period Effect ◽  
The Past ◽  
Health And Nutrition ◽  
Period Effects ◽  
Chewing Ability ◽  
Main Variable ◽  
Observation Period

AbstractThere have been marked improvements in oral health in Korea during the past 10 years, including chewing ability. We sought to disentangle age, period, and cohort effects in chewing ability between 2007 and 2018. We analyzed data from the Korea National Health and Nutrition Examination Survey. The main variable was chewing difficulty, which was assessed among participants aged 20 years and older. APC analysis revealed three trends in chewing difficulty: (1) there was an increase in chewing difficulty starting at around 60 years of age (age effect), (2) there was a steady decrease in chewing difficulty during the observation period (period effect), and (3) chewing ability improved with each successive generation born after 1951 (cohort effect). Regarding recent improvements in chewing ability, cohort effects were somewhat more important than period effects.

scholarly journals All-Cause and Cancer Mortality Trends in Macheng, China (1984–2013): An Age-Period-Cohort Analysis

2018 ◽  
Vol 15 (10) ◽  
pp. 2068
Author(s):  
Chunhui Li ◽  
Songbo Hu ◽  
Chuanhua Yu
Keyword(s):  
Cancer Mortality ◽  
Disease Surveillance ◽  
Cohort Analysis ◽  
Cohort Effect ◽  
Age Effect ◽  
Mortality Data ◽  
Period Effect ◽  
Mortality Trends ◽  
All Cause Mortality ◽  
Males And Females

The aim was to study the variation trends of all-cause and cancer mortality during 1984–2013 in Macheng City, China. The mortality data were collected from Macheng City disease surveillance points system and Hubei Center for Disease Control and Prevention. The model life table system was used to adjust mortality rates due to an under-reporting problem. An age-period-cohort model and intrinsic estimator algorithm were used to estimate the age effect, period effect, and cohort effect of all-cause mortality and cancer mortality for males and females. Age effect of all-cause mortality for both sexes increased with age, while the age effect of cancer mortality for both sexes reached a peak at the age group of 55–59 years old and then decreased. The relative risks (RRs) of all-cause mortality for males and females declined with the period and decreased by 51.13% and 63.27% during the whole study period, respectively. Furthermore, the period effect of cancer mortality in both sexes decreased at first and then increased. The cohort effect of all-cause and cancer mortality for both sexes born after 1904 presented the pattern of “rise first and then fall,” and decreased by 82.18% and 90.77% from cohort 1904–1908 to 1989–1993, respectively; especially, the risk of all-cause and cancer mortality for both sexes born before 1949 was much higher than that for those born after 1949.

scholarly journals Stroke Mortality Trends in the Population of Klaipėda From 1994 to 2008

Medicina ◽  
2011 ◽  
Vol 47 (9) ◽  
pp. 512 ◽  
Author(s):  
Henrikas Kazlauskas ◽  
Nijolė Raškauskienė ◽  
Rima Radžiuvienė ◽  
Vinsas Janušonis
Keyword(s):  
Mortality Rate ◽  
Mortality Rates ◽  
Mortality Data ◽  
World Population ◽  
Stroke Mortality ◽  
Middle Aged ◽  
Elderly Men ◽  
Men And Women ◽  
Specific Mortality ◽  
Permanent Residents

The objective of the study was to evaluate the trends in stroke mortality in the population of Klaipėda aged 35–79 years from 1994 to 2008. Material and Methods. Mortality data on all permanent residents of Klaipėda aged 35–79 years who died from stroke in 1994–2008 were gathered for the study. All death certificates of permanent residents of Klaipėda aged 35–79 years who died during 1994–2008 were examined in this study. The International Classification of Diseases (ICD-9 codes 430–436, and ICD-10 codes I60–I64) was used. Sex-specific mortality rates were standardized according to the Segi’s world population; all the mortality rates were calculated per 100 000 population per year. Trends in stroke mortality were estimated using log-linear regression models. Sex-specific mortality rates and trends were calculated for 3 age groups (35–79, 35–64, and 65–79 years). Results. During the entire study period (1994–2008), a marked decline in stroke mortality with a clear slowdown after 2002 was observed. The average annual percent changes in mortality rates for men and women aged 35–79 years were –4.6% (P=0.041) and –6.5% (P=0.002), respectively. From 1994 to 2002, the stroke mortality rate decreased consistently among both Klaipėda men and women aged 35–64 years (20.4% per year, P=0.002, and 14.7% per year, P=0.006, respectively) and in the elderly population aged 65–79 years (13.8% per year, P=0.005; and 12% per year, P=0.019). During 2003–2008, stroke mortality increased by 16.3% per year in middle-aged men (35–64 years), whereas among women (aged 35–64 and 65–79 years) and elderly men (aged 65–79 years), the age-adjusted mortality rate remained relatively unchanged. Conclusions. Among both men and women, the mortality rates from stroke sharply declined between 1994 and 2008 with a clear slowdown in the decline after 2002. Stroke mortality increased significantly among middle-aged men from 2003, while it remained without significant changes among women of the same age and both elderly men and women.

scholarly journals Trends in cerebrovascular diseases mortality in Serbia, 1997–2016: a nationwide descriptive study

BMJ Open ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. e024417 ◽  
Author(s):  
Irena Ilic ◽  
Milena Ilic ◽  
Sandra Sipetic Grujicic
Keyword(s):  
Treatment Guidelines ◽  
Cohort Analysis ◽  
Descriptive Study ◽  
Mortality Rates ◽  
Cerebrovascular Diseases ◽  
Joinpoint Regression ◽  
Mortality Trend ◽  
Mortality Trends ◽  
Joinpoint Regression Analysis ◽  
Period Effects

ObjectivesOver the last decades, mortality from cerebrovascular diseases (CVDs) has decreased in many countries. The aim of this study was to assess the trends of CVDs mortality in Serbia.MethodsDescriptive epidemiological study. Age-standardised rates (ASRs) for CVDs mortality were assessed by joinpoint regression analysis to identify significant changes in trends and estimate annual per cent changes with 95% CI. The age-period-cohort analysis has been used to describe variations in mortality.ResultsOver this 20-year period, there were 312 847 deaths from CVDs, with the overall average annual ASR of 148.4 per 100 000. The trend of ASRs from CVDs mortality in males in Serbia showed a significant joinpoint: rates insignificantly decreased from 1997 to 2005 by −0.8% per year (95% CI −1.7% to 0.2%) and thereafter rapidly decreased by −5.0% per year (95% CI −5.6% to −4.5%). A joinpoint for females was found in 2006: the mortality trend was first significantly decreasing by −1.0% per year (95% CI −1.9% to −0.0%) and then sharply falling down by −6.0% per year (95% CI −6.8% to −5.3%). Results of age-period-cohort analysis indicated that the relative risk for CVDs mortality showed statistically significant (p<0.05) cohort and period effects, as well as the net drift and local drifts in Serbian population. The trends in mortality for all subtypes of CVDs were similar in both sexes: trends significantly decreased for most subtypes, with the exception of a significant increase for cerebral infarction.ConclusionsAfter a decade of increase, CVDs mortality rates are declining in last decade in Serbia. However, mortality rates from CVDs remain exceedingly high in Serbia. Differences in mortality trends of the stroke subtypes should be taken into account in the creation of both prevention and treatment guidelines.

Mortality improvement by socio-economic circumstances in England (1982 to 2006)

2012 ◽  
Vol 19 (1) ◽  
pp. 1-35 ◽  
Author(s):  
J. L. C. Lu ◽  
W. Wong ◽  
M. Bajekal
Keyword(s):  
Financial Management ◽  
Relative Deprivation ◽  
Population Data ◽  
Mortality Rates ◽  
Mortality Data ◽  
Mortality Trends ◽  
Mortality Improvement ◽  
Index Of Multiple Deprivation ◽  
Insight Into ◽  
Over Time

AbstractAssessing longevity risk is crucial to the financial management of annuities and longevity-related financial instruments. Actuaries have been using socio-economic circumstances (SEC) of individuals estimated through postcodes, pension size and occupation to price annuities for prospective customers. Differences in mortality rates of people in different SEC have been discussed extensively but less is known about how their mortality rates have changed over time.A lack of regular, consistent and credible mortality data for people in different SEC has hampered the study of historical mortality trends. This in turn has made forecasting a greater challenge. To address some of these data issues, we have obtained mortality and population data between 1981 and 2007 for England, divided into SEC quintiles (measured by the relative deprivation of the area of residence according to the Index of Multiple Deprivation (IMD) 2007). Using the data, we have analysed the mortality trends by SEC. These findings can provide insight into mortality improvement for people in different SEC. This can contribute to commercial decisions for annuity businesses, reinsurance and longevity swaps.

scholarly journals Age transition of tuberculosis incidence and mortality in Brazil

2001 ◽  
Vol 35 (1) ◽  
pp. 81-87 ◽  
Author(s):  
Flávio Chaimowicz
Keyword(s):  
Older People ◽  
Demographic Transition ◽  
Age Groups ◽  
Population Data ◽  
Mortality Rates ◽  
Mortality Data ◽  
Older Individuals ◽  
Tuberculosis Incidence ◽  
General Decline ◽  
Incidence And Mortality

OBJECTIVE: Before the Aids pandemic, demographic transition and control programs prompted a shift in the age of incidence of tuberculosis from adults to older people in many countries. The objective of the study is to evaluate this transition in Brazil. METHODS: Tuberculosis incidence and mortality data from the Ministry of Health and population data from the Brazilian Bureau of Statistics were used to calculate age-specific incidence and mortality rates and medians. RESULTS: Among reported cases, the proportion of older people increased from 10.5% to 12% and the median age from 38 to 41 years between the period of 1986 and 1996. The smallest decrease in the incidence rate occurred in the 30--49 and 60+ age groups. The median age of death increased from 53 to 55 years between 1980 and 1996. The general decline in mortality rates from 1986 to 1991 became less evident in the 30+ age group during the period of 1991 to 1996. A direct correlation between age and mortality rates was observed. The largest proportion of bacteriologically unconfirmed cases occurred in older individuals. CONCLUSIONS: The incidence of tuberculosis has begun to shift to the older population. This shift results from the decline in the annual risk of infection as well as the demographic transition. An increase in reactivation tuberculosis in older people is expected, since this population will grow from 5% to 14% of the Brazilian population over the next 50 years. A progressive reduction in HIV-related cases in adults will most likely occur. The difficulty in diagnosing tuberculosis in old age leads to increased mortality.

scholarly journals Long-Term Trends of Liver Cancer Incidence and Mortality in China 1990–2017: A Joinpoint and Age–Period–Cohort Analysis

2019 ◽  
Vol 16 (16) ◽  
pp. 2878 ◽  
Author(s):  
Fang Wang ◽  
Sumaira Mubarik ◽  
Yu Zhang ◽  
Lu Wang ◽  
Yafeng Wang ◽  
...  
Keyword(s):  
Liver Cancer ◽  
Cancer Incidence ◽  
Cohort Analysis ◽  
Cohort Effects ◽  
Mortality Data ◽  
Period Effect ◽  
Birth Cohorts ◽  
Incidence And Mortality ◽  
Long Term Trends

Liver cancer (LC) is one of the most common causes of cancer-related deaths: this study aims to present the long-term trends and age–period–cohort effects of the incidence of and mortality from LC in China during 1990–2017. Incidence and mortality data were obtained from the Global Burden of Disease Study 2017. We determined trends in the age-standardized incidence rate (ASIR) and mortality rate (ASMR) using Joinpoint regression. An age–period–cohort (APC) analysis was performed to describe the long-term trends with intrinsic estimator methods. The ASMR decreased markedly before 2013 and increased thereafter, with overall average annual percent change (AAPC) values of −0.5% (95% confidence interval (CI): −0.6%, −0.3%) for men and −1.3% (−1.6%, −1.0%) for women during 1990–2017. The ASIR significantly increased by 0.2% (0.1%, 0.3%) in men and decreased by 1.1% (−1.2%, −1.0%) in women from 1990 to 2017. The risks of LC incidence and mortality increased with age in both genders. The period effect risk ratios (RRs) of incidence and mortality displayed similar monotonic increasing trends in men and remained stable in women. The cohort effect showed an overall downward trend and almost overlapping incidence and mortality in both genders, and later birth cohorts experienced lower RRs than previous birth cohorts. Older age, recent period, and birth before 1923 were associated with a higher risk of liver cancer incidence and mortality. The net age and period effects showed an increasing trend, while the cohort effects presented a decreasing trend in incidence and mortality risk. As China’s population aging worsens and with the popularization of unhealthy lifestyles, the burden caused by liver cancer will remain a huge challenge in China’s future.

scholarly journals Trends of stroke subtypes mortality in Sao Paulo, Brazil (1996-2003)

2005 ◽  
Vol 63 (4) ◽  
pp. 951-955 ◽  
Author(s):  
Paulo A. Lotufo ◽  
Isabela M. Benseñor
Keyword(s):  
Intracerebral Hemorrhage ◽  
Cerebral Infarction ◽  
Mortality Rates ◽  
Sao Paulo ◽  
Mortality Data ◽  
São Paulo ◽  
Stroke Mortality ◽  
Stroke Subtype ◽  
Stroke Subtypes ◽  
Annual Reduction

The decline of stroke mortality rates has been described in Brazil; however, there is no data about stroke subtypes. We described the changes of stroke mortality rates in the city of Sao Paulo (1996-2003) emphasizing intracerebral hemorrhage and cerebral infarction. We categorized mortality data by gender and 10-year age-strata from 30 to 79 years-old. For men, an annual reduction of all types of stroke (-3.9%), and of stroke subtypes as intracerebral hemorrhage (-3.0%) and cerebral infarction was observed (-2.7%) as well as, a decline of ill-defined stroke (-7.4%). For women, a decline was observed for all types of stroke (-3.3%) and for ill-defined stroke (-12%). However, the switch of ill-defined cases to stroke subtype categories due to a better clinical diagnosis blurred a real decline of both cerebral infarction and intracerebral hemorrhagic stroke among women.

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