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Life Expectancy and Healthy Life Expectancy ... • Life expectancy is lower in Aberdeen City than in most other local authorities, with male life expectancy ranking 21 st and female

Jul 13, 2020

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  • RESEARCH AND INFORMATION

    Life Expectancy and

    Healthy Life Expectancy

  • Research and Information, Briefing Paper, Life Expectancy and Healthy Life Expectancy Page 1

    Research and Information

    Briefing Paper January 2019

    Life Expectancy and Healthy Life Expectancy

    This is one in a series of briefing papers that has been produced by the Research and Information

    team. It is intended that these papers will be used by Council services and, where appropriate, our

    Community Planning partners to assist policy development and wider service delivery. Some papers,

    including this one, may be of interest to a wider audience.

    This paper looks at Life Expectancy and Healthy Life Expectancy in Aberdeen City, up-dating the

    Briefing Paper on the same topic produced in January 2017. The data in this paper comes primarily

    from National Records of Scotland (NRS), the Scottish Public Health Observatory (ScotPHO) and the

    Office for National Statistics (ONS). This paper presents a brief overview of the estimated Life

    Expectancy and Healthy Life Expectancy at birth for males and females in Aberdeen City. It

    compares Aberdeen City to other local authority areas and to Scotland. It also looks at how Life

    Expectancy and Healthy Life Expectancy have changed over time as well as the relationship between

    these and deprivation. The paper also looks at Life Expectancy at birth for intermediate zones in

    Aberdeen City and gives information on Life Expectancy at age 65 years.

    For more information on these issues, please contact:

    Research and Information Team

    Business Intelligence & Performance Management

    Commissioning

    Aberdeen City Council

    Marischal College

    Broad Street

    Aberdeen AB10 1AB

     03000 200291

     statistics@aberdeencity.gov.uk

    These papers, and other statistical reports, can be found in the ‘Statistics and Information’ section of

    the Aberdeen City Council website https://www.aberdeencity.gov.uk/services/strategy-

    performance-and-statistics/statistics-and-information

    https://www.aberdeencity.gov.uk/services/strategy-performance-and-statistics/statistics-and-information https://www.aberdeencity.gov.uk/services/strategy-performance-and-statistics/statistics-and-information

  • Research and Information, Briefing Paper, Life Expectancy and Healthy Life Expectancy Page 2

    Summary

    • Estimated life expectancy (LE) at birth is generally higher in females than in males.

    • In 2015-17, estimated life expectancy at birth for females in Aberdeen City was 81.1 years and

    for males it was 76.9 years.

    • The estimated LE at birth for females is the same as that for Scotland (81.1 years), while for

    males it is slightly lower than for Scotland (77.0 years).

    • Life expectancy is lower in Aberdeen City than in most other local authorities, with male life

    expectancy ranking 21st and female life expectancy ranking 19th (out of 32 local authorities).

    • This year (i.e. between 2014-2016 and 2015-2017) is the first time since 2011-2013 that

    estimated life expectancy at birth in Aberdeen City has shown an increase, from 76.4 years to

    76.9 years for males and from 80.8 years to 81.1 years for females.

    • Over the past 10 years, life expectancy has increased for both males and females. The increase

    has been higher for males (1.8 years) than females (0.9 years), resulting in a slight closing of the

    gap between male and female life expectancy from 5.0 years in 2005-2007 to 4.2 years in 2015-

    2017.

    • Life expectancy is strongly associated with deprivation. In Aberdeen City, life expectancy at birth

    was 71.7 years for males in the 20% most deprived areas of the City compared to 81.4 years for

    males in the 20% least deprived areas. For females the respective figures were 77.3 years and

    84.7 years.

    • Across the City (based on intermediate zones) life expectancy varies by 14.3 years for males and

    12.5 years for females.

    • While females generally have higher life expectancy than males, they also generally experience a

    longer period of ‘not healthy’ health than males.

    • In 2015-2017, males in Aberdeen had a life expectancy of 76.9 years and a healthy life

    expectancy of 61.5 years. This means that a male born in 2015-2017 could expect to spend 15.4

    years in ‘not healthy’ health.

    • In 2015-2017, females in Aberdeen had a life expectancy of 81.1 years and a healthy life

    expectancy of 64.6 years. This means that a female born in 2015-2017 could expect to spend

    16.4 years in ‘not healthy’ health.

    • Males in Aberdeen have a lower healthy life expectancy than males in Scotland (61.5 years

    compared to 62.3 years) while females in Aberdeen have a higher healthy life expectancy than

    those in Scotland (64.6 years compared to 62.6 years).

  • Research and Information, Briefing Paper, Life Expectancy and Healthy Life Expectancy Page 3

    1. Life Expectancy

    Life Expectancy (LE) at birth is an estimate of the average number of years a new-born baby

    would survive if he/she experienced an area’s age specific mortality rates throughout his/her

    life. It provides a useful summary measure of mortality rates experienced across a population

    at a particular point in time. National Records of Scotland (NRS) produces life expectancy

    estimates for Scottish council areas. The estimates are based on the mortality probabilities

    indicated by the death records for the three years prior to the date of publication. The most

    recent estimates were published on 12th December 2018 (based on 2015-2017).

    1.1. Life Expectancy at Birth

    In general, LE at birth is higher for women than for men. In Aberdeen City LE at birth is

    estimated to be 81.1 years for women and 76.9 years for men, i.e. a baby girl born in

    Aberdeen City in 2015-2017 could expect to live for 81.1 years while a baby boy born in

    Aberdeen City in the same period could expect to live for 76.9 years. The estimated LE at birth

    for females is the same as that for Scotland (81.1 years), while for males it is slightly lower

    than for Scotland (77.0 years). Table 1.1 presents estimated life expectancy at birth for males

    and females in Aberdeen City and Scotland.

    Table 1.1: Estimated life expectancy at birth, males and females, Aberdeen City and

    Scotland, 2015-2017

    Male Female

    Life

    expectancy Lower

    CI Upper

    CI Life

    expectancy Lower

    CI Upper

    CI

    Years Years Years Years Years Years

    Aberdeen City 76.9 76.4 77.1 81.1 80.7 81.4

    Scotland 77.0 77.0 77.2 81.1 81.1 81.2

    Source: National Records of Scotland, Life Expectancy for Administrative areas within Scotland, 2015-2017, available at:

    https://www.nrscotland.gov.uk/statistics-and-data/statistics/statistics-by-theme/life-expectancy/life-expectancy-in-scottish-

    areas/life-expectancy-for-administrative-areas-within-scotland-2015-2017

    CI = confidence interval (95%)

    Note: It should be remembered that life expectancy is an estimate – and as such is subject to

    a margin of error. The accuracy of the results is indicated by calculating a 95% confidence

    interval (CI) – the true underlying life expectancy lies within its upper and lower limits with

    95% probability. So, looking at lower and upper CI limits for females in Aberdeen City, true life

    expectancy for baby girls born in 2015-2017 lies between 80.7 years and 81.4 years.

    Life expectancy estimates for different areas or different groups can be said to be statistically

    significantly different if their confidence intervals do not overlap. Therefore, looking at the

    above table, as the upper and lower CI limits for male and female life expectancy do not

    overlap, it can be said that female life expectancy is significantly higher than male life

    expectancy. Using the CIs to compare Aberdeen City and Scotland, it can be seen that while

    estimated life expectancy is lower in Aberdeen City than Scotland for both males and females,

    this difference is not statistically significant (i.e. the confidence intervals do overlap).

    It is also worth noting that life expectancy results, particularly in smaller areas, can be

    affected by random variation in the annual number of deaths.

    https://www.nrscotland.gov.uk/statistics-and-data/statistics/statistics-by-theme/life-expectancy/life-expectancy-in-scottish-areas/life-expectancy-for-administrative-areas-within-scotland-2015-2017 https://www.nrscotland.gov.uk/statistics-and-data/statistics/statistics-by-theme/life-expectancy/life-expectancy-in-scottish-areas/life-expectancy-for-administrative-areas-within-scotland-2015-2017

  • Research and Information, Briefing Paper, Life Expectancy and Healthy Life Expectancy Page 4

    1.2. Comparison with other local authorities

    Males: LE at birth ranged from a low of 73.3 years in Glasgow City to a high of 80.5 years in

    East Renfrewshire – a difference of 7.2 years. At 76.4 years, Aberdeen City ranked 21st (out of

    32) out of all local authorities in Scotland.

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