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Achieving a 25% reduction in premature non-communicable disease mortality: the Swedish population as a cohort study
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Epidemiologi och global hälsa.ORCID-id: 0000-0002-1848-2867
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Epidemiologi och global hälsa.
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Epidemiologi och global hälsa.
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Epidemiologi och global hälsa.
2015 (Engelska)Ingår i: BMC Medicine, ISSN 1741-7015, E-ISSN 1741-7015, Vol. 13, nr 65Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

BACKGROUND: The 2012 World Health Assembly set a target for Member States to reduce premature non-communicable disease (NCD) mortality by 25% over the period 2010 to 2025. This reflected concerns about increasing NCD mortality burdens among productive adults globally.

OBJECTIVES: We firstly considered whether the WHO target of a 25% reduction in the unconditional probability of dying between ages of 30 and 70 from NCDs (cardiovascular diseases, cancer, diabetes or chronic respiratory diseases) had already taken place in Sweden during an equivalent 15-year period. Secondly, we assessed which population sub-groups had been more or less successful in contributing to overall changes in premature NCD mortality in Sweden.

METHODS: A retrospective dynamic cohort database was constructed from Swedish population registers in the Linnaeus database, covering the entire population in the age range 30-69 years for the period 1991 to 2006, which was used directly to measure reductions in premature NCD mortality. Multivariate Poisson regression models were used to assess the contributions of individual background factors to decreases in premature NCD mortality.

RESULTS: A total of 292,320 deaths occurred in the 30-69 year age group during the period 1991 to 2006, against 70,768,848 person-years registered. The crude all-cause mortality rate declined from 5.03 to 3.72 per 1,000 person-years, a 26% reduction. Within this, the unconditional probability of dying between the ages of 30 and 70 from NCD causes as defined by WHO fell by 30.0%. Age was consistently the strongest determinant of NCD mortality. Background determinants of NCD mortality changed significantly over the four time periods 1991-1994, 1995-1998, 1999-2002 and 2003-2006.

CONCLUSIONS: Sweden, now at a late stage of epidemiological transition, has already exceeded the 25% premature NCD mortality reduction target during an earlier 15-year period. This should be encouraging news for countries currently implementing premature NCD mortality reduction programmes. Our findings suggest, however, that it may be difficult for Sweden and other late-transition countries to reach the current 25x25 target, particularly where substantial premature mortality reductions have already been achieved.

Ort, förlag, år, upplaga, sidor
2015. Vol. 13, nr 65
Nyckelord [en]
non-communicable disease, mortality, Sweden, World Health Organization, 25x25 target
Nationell ämneskategori
Folkhälsovetenskap, global hälsa, socialmedicin och epidemiologi
Forskningsämne
folkhälsa
Identifikatorer
URN: urn:nbn:se:umu:diva-103028DOI: 10.1186/s12916-015-0313-8ISI: 000352599700001PubMedID: 25889300OAI: oai:DiVA.org:umu-103028DiVA, id: diva2:812060
Tillgänglig från: 2015-05-15 Skapad: 2015-05-15 Senast uppdaterad: 2018-06-07Bibliografiskt granskad
Ingår i avhandling
1. Where are the world’s disease patterns heading?: The challenges of epidemiological transition
Öppna denna publikation i ny flik eller fönster >>Where are the world’s disease patterns heading?: The challenges of epidemiological transition
2015 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

INTRODUCTION: Epidemiological transition theory, first postulated by Omran in 1971, provides a useful framework for understanding cause-specific mortality changes and may contribute usefully to predictions about cause-specific mortality. However, understandings of mortality transitions and associated epidemiological changes remain poorly defined for public health practitioners due to lack of evidence from low- and middle-income countries. Therefore, understanding of the concept and development of epidemiological transition theory as well as population burden of premature mortality attributable to risk factors is needed.

OBJECTIVES: This thesis aims to understand how epidemiological transition theory has been applied in different contexts, using available evidence on mortality transitions from high, middle- and low- income countries, as well as the contribution of risk factors to mortality transitions, particularly for premature mortality.

METHODS: A Medline literature search from 1971 to 2013 was conducted to synthesise published evidence on mortality transition (paper I). A descriptive analysis of trends in cause of death using INDEPTH data was conducted, focusing on specific causes of death in 12 INDEPTH sites in Africa and Asia, using the INDEPTH 2013 standard population structure for appropriate comparisons across sites (paper II). A retrospective dynamic cohort database was constructed from Swedish population registers for the age range 30-69 years during 1991-2006, to measure reductions in premature non-communicable disease mortality using a life table method (paper III). Prospective cohort data from Västerbotten Intervention Programme from 1990 to 2006 were used to measure the magnitude of premature non-communicable disease mortality reductions associated with risk factor changes for each period of time (paper IV).

FINDINGS: There were changes in emphasis in research on epidemiological transition over the four decades from 1971 to 2013, from cause of death to wide-ranging aspects of the determinants of mortality with increasing research interests in low-and middle-income countries, with some unconsidered aspects of social determinants contributing to deviations from classic theoretical pathways. Mortality rates declined in most sites, with the annual reductions in premature adult mortality varied across INDEPTH sites, Sweden, which now is at late stage of epidemiological transition stage, achieved a 25% reduction in premature mortality during 1991-2006. Overall downward trends in risk factors have helped to reduce premature mortality in the population of Västerbotten County, but some benefits were offset by other increasing risks. The largest mortality changes accrued from reductions in smoking, hypertension and hypercholesterolaemia.

CONCLUSIONS: This thesis established patterns of current epidemiological transition in high, middle-and low-income countries (Asia and Africa), where the theory fits the transition patterns in some countries, but with some needs for further adjustments in other settings, as well as deviations from the classical ET theory in the last four decades. It highlights the need to identify the burden of mortality and morbidity, particularly for reducing mortality occurring before the age of 70 years and its attribution to risk factors, which are a major public health challenge. This informs shifting of public health priorities and resources towards prevention and control of chronic non-communicable disease risk factors.

Ort, förlag, år, upplaga, sidor
Umeå: Umeå universitet, 2015. s. 66
Serie
Umeå University medical dissertations, ISSN 0346-6612 ; 1728
Nyckelord
epidemiological transition, premature mortality, non-communicable disease, risk factors, Sweden, low-and middle-income countries, INDEPTH Network, Västerbotten Intervention Programme
Nationell ämneskategori
Folkhälsovetenskap, global hälsa, socialmedicin och epidemiologi
Forskningsämne
folkhälsa
Identifikatorer
urn:nbn:se:umu:diva-103281 (URN)978-91-7601-289-5 (ISBN)
Disputation
2015-06-12, Room 135, Family Medicine, Umeå University Hospital, Umeå, 13:00 (Engelska)
Opponent
Handledare
Tillgänglig från: 2015-05-22 Skapad: 2015-05-19 Senast uppdaterad: 2018-06-07Bibliografiskt granskad

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