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Changing speed of reduction in under-5 mortality rates over the 20th century

Karlsson, Omar LU ; Dribe, Martin LU and Subramanian, S V (2020) In Journal of Epidemiology and Community Health 75(1).
Abstract
Background
Declines from high levels of under-5 mortality rate (U5MR) first occurred in Western Europe. Knowledge and technologies gained from early mortality reductions could accelerate the U5MR decline for countries that followed. We explored whether average annual reduction (AAR) in U5MR increased between countries over time in the 20th century.

Methods
We used U5MR time series from the Human Mortality Database and United Nations for 110 countries experiencing a decline from 100 to 50 under-5 deaths per 1000 live births during the 20th century.

Results
Between 1907 and 1938, the AAR was 2.61 (95% CI 2.09, 3.13) deaths per 1000 live births per year on average and increased by 0.06 (95% CI 0.02, 0.10)... (More)
Background
Declines from high levels of under-5 mortality rate (U5MR) first occurred in Western Europe. Knowledge and technologies gained from early mortality reductions could accelerate the U5MR decline for countries that followed. We explored whether average annual reduction (AAR) in U5MR increased between countries over time in the 20th century.

Methods
We used U5MR time series from the Human Mortality Database and United Nations for 110 countries experiencing a decline from 100 to 50 under-5 deaths per 1000 live births during the 20th century.

Results
Between 1907 and 1938, the AAR was 2.61 (95% CI 2.09, 3.13) deaths per 1000 live births per year on average and increased by 0.06 (95% CI 0.02, 0.10) deaths for each year that passed before the decline started. Countries going through the decline in 1938–1968 and 1968–1999 showed an AAR of 3.96 and 3.67 (95% CI 3.37, 4.54 and 3.26, 4.07), respectively, with no increase in AAR.

Conclusions
Acceleration in U5MR reduction was apparent in today’s high-income countries, indicating that greater similarities and capacity may have facilitated the adaptation of mortality reducing knowledge and technologies. Greater emphasis on simple and individual-level interventions or more difficult circumstances may also explain the lack of acceleration in mortality reduction after 1950. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Epidemiology and Community Health
volume
75
issue
1
publisher
BMJ Publishing Group
external identifiers
  • pmid:32661135
  • scopus:85093928603
ISSN
1470-2738
DOI
10.1136/jech-2019-213045
language
English
LU publication?
yes
id
fc52b483-a82b-4ae4-b946-7a3effaf4cfb
date added to LUP
2020-07-21 11:44:23
date last changed
2022-04-18 23:41:34
@article{fc52b483-a82b-4ae4-b946-7a3effaf4cfb,
  abstract     = {{Background <br/>Declines from high levels of under-5 mortality rate (U5MR) first occurred in Western Europe. Knowledge and technologies gained from early mortality reductions could accelerate the U5MR decline for countries that followed. We explored whether average annual reduction (AAR) in U5MR increased between countries over time in the 20th century.<br/><br/>Methods <br/>We used U5MR time series from the Human Mortality Database and United Nations for 110 countries experiencing a decline from 100 to 50 under-5 deaths per 1000 live births during the 20th century.<br/><br/>Results <br/>Between 1907 and 1938, the AAR was 2.61 (95% CI 2.09, 3.13) deaths per 1000 live births per year on average and increased by 0.06 (95% CI 0.02, 0.10) deaths for each year that passed before the decline started. Countries going through the decline in 1938–1968 and 1968–1999 showed an AAR of 3.96 and 3.67 (95% CI 3.37, 4.54 and 3.26, 4.07), respectively, with no increase in AAR.<br/><br/>Conclusions <br/>Acceleration in U5MR reduction was apparent in today’s high-income countries, indicating that greater similarities and capacity may have facilitated the adaptation of mortality reducing knowledge and technologies. Greater emphasis on simple and individual-level interventions or more difficult circumstances may also explain the lack of acceleration in mortality reduction after 1950.}},
  author       = {{Karlsson, Omar and Dribe, Martin and Subramanian, S V}},
  issn         = {{1470-2738}},
  language     = {{eng}},
  month        = {{12}},
  number       = {{1}},
  publisher    = {{BMJ Publishing Group}},
  series       = {{Journal of Epidemiology and Community Health}},
  title        = {{Changing speed of reduction in under-5 mortality rates over the 20th century}},
  url          = {{http://dx.doi.org/10.1136/jech-2019-213045}},
  doi          = {{10.1136/jech-2019-213045}},
  volume       = {{75}},
  year         = {{2020}},
}