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Data Provider: Welsh Government Inequality gap in life expectancy and healthy life expectancy at birth (Slope Index of Inequality) in years by Local Health Board and Local Authority
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[Expand]Click here to sortLife expectancyData is based on a 5 year average and is intended to provide context for the 5 year average on Health life expectancy. For official data on life expectancy please use data published by the ONS: http://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/lifeexpectancies[Expand]Click here to sortHealthy life expectancy[Expand]Click here to sortLife expectancyData is based on a 5 year average and is intended to provide context for the 5 year average on Health life expectancy. For official data on life expectancy please use data published by the ONS: http://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/lifeexpectancies[Expand]Click here to sortHealthy life expectancy
[Collapse]W92000004[Expand]Wales8.818.77.218.2
[Collapse]W11000023[Collapse]Wales[Expand]Betsi Cadwaladr University Health Board7.913.35.813.8
[Collapse]W11000010[Collapse]Wales[Collapse]Betsi Cadwaladr University Health BoardIsle of Anglesey6.712.71.26.8
[Collapse]W11000002[Collapse]Wales[Collapse]Betsi Cadwaladr University Health BoardGwynedd3.49.22.37.0
[Collapse]W11000007[Collapse]Wales[Collapse]Betsi Cadwaladr University Health BoardConwy8.414.66.613.5
[Collapse]W11000019[Collapse]Wales[Collapse]Betsi Cadwaladr University Health BoardDenbighshire11.016.08.420.5
[Collapse]W11000014[Collapse]Wales[Collapse]Betsi Cadwaladr University Health BoardFlintshire8.111.66.413.7
[Collapse]W11000013[Collapse]Wales[Collapse]Betsi Cadwaladr University Health BoardWrexham8.415.07.016.9
[Collapse]W11000025[Collapse]Wales[Expand]Hywel Dda University Health Board4.812.24.512.2
[Collapse]W11000004[Collapse]Wales[Collapse]Hywel Dda University Health BoardCeredigion3.19.33.76.7
[Collapse]W11000003[Collapse]Wales[Collapse]Hywel Dda University Health BoardPembrokeshire4.311.94.211.9
[Collapse]W11000016[Collapse]Wales[Collapse]Hywel Dda University Health BoardCarmarthenshire5.310.64.712.5
[Collapse]W11000026[Collapse]Wales[Expand]Abertawe Bro Morgannwg University Health Board9.720.87.618.3
[Collapse]W11000006[Collapse]Wales[Collapse]Abertawe Bro Morgannwg University Health BoardSwansea11.021.96.716.3
[Collapse]W11000005[Collapse]Wales[Collapse]Abertawe Bro Morgannwg University Health BoardNeath Port Talbot6.216.97.418.4
[Collapse]W11000012[Collapse]Wales[Collapse]Abertawe Bro Morgannwg University Health BoardBridgend9.621.58.316.2
[Collapse]W11000029[Collapse]Wales[Expand]Cardiff and Vale University Health Board10.323.29.221.9
[Collapse]W11000015[Collapse]Wales[Collapse]Cardiff and Vale University Health BoardVale of Glamorgan7.620.99.523.4
[Collapse]W11000008[Collapse]Wales[Collapse]Cardiff and Vale University Health BoardCardiff11.024.49.221.8
[Collapse]W11000027[Collapse]Wales[Expand]Cwm Taf University Health Board7.414.83.715.0
[Collapse]W06000016[Collapse]Wales[Collapse]Cwm Taf University Health BoardRhondda Cynon Taf7.815.13.513.3
[Collapse]W11000017[Collapse]Wales[Collapse]Cwm Taf University Health BoardMerthyr Tydfil6.815.54.815.2
[Collapse]W11000028[Collapse]Wales[Expand]Aneurin Bevan University Health Board9.018.37.418.6
[Collapse]W06000018[Collapse]Wales[Collapse]Aneurin Bevan University Health BoardCaerphilly7.813.07.014.6
[Collapse]W11000020[Collapse]Wales[Collapse]Aneurin Bevan University Health BoardBlaenau Gwent5.111.83.712.3
[Collapse]W11000021[Collapse]Wales[Collapse]Aneurin Bevan University Health BoardTorfaen7.614.87.116.5
[Collapse]W11000001[Collapse]Wales[Collapse]Aneurin Bevan University Health BoardMonmouthshire6.310.13.611.1
[Collapse]W11000018[Collapse]Wales[Collapse]Aneurin Bevan University Health BoardNewport9.918.27.220.1
[Collapse]W11000024[Collapse]Wales[Expand]Powys Teaching Health Board5.610.46.314.4
[Collapse]W06000023[Collapse]Wales[Collapse]Powys Teaching Health BoardPowys5.610.46.314.4

Metadata

Title

Inequality gap in life expectancy and healthy life expectancy at birth (Slope Index of Inequality) in years by Local Health Board and Local Authority

Last update

October 2016 October 2016

Next update

To Be Confirmed

Publishing organisation

Welsh Government

Source 1

Public Health Wales

Contact email

stats.healthinfo@wales.gsi.gov.uk

Lowest level of geographical disaggregation

Local authorities

Geographical coverage

Wales

Languages covered

English and Welsh

Data licensing

You may use and re-use this data free of charge in any format or medium, under the terms of the Open Government License - see http://www.nationalarchives.gov.uk/doc/open-government-licence

General description

Table displays data for the National indicator "Healthy life expectancy at birth including the gap between the least and most deprived" as required by the Well-being of Future Generations (Wales) Act 2015.
Life expectancy (LE) is a widely used statistical measure of the average expected years of life for a newborn based on recently-observed mortality rates. As such, LE at birth is also a measure of mortality across all ages. It should be noted, however, that mortality rates are likely to change in the future, and therefore whilst LE figures are our “best guess” at this point in time, they cannot provide a precise estimate of the lifespan of an individual.
In addition to general LE, it is important to consider healthy life expectancy (HLE). This represents the number of years a person might expect to live in good or very good health. HLE incorporates survey data on health in Wales and hence its estimation may be affected by any survey sampling error.
Life expectancy estimates are directly comparable between areas, time periods and sexes. 95 per cent confidence intervals have been produced which describe the degree of uncertainty around the estimates. These intervals can be used to ascertain the statistical significance of a difference between two estimates. If, for example, the confidence intervals between the life expectancy estimate in the earlier period and the estimate in the later period overlap, then the difference between the two is not statistically significant.
The HLE estimates are very sensitive to variation in health status data, particularly in the older age groups, where there are fewer survey responses. Welsh Health Survey data is self-reported and subject to the individual’s own perception of health.


Data collection and calculation

Life expectancy was calculated using the preferred method of the Office for National Statistics for calculating life expectancy at birth for small areas, as described by Eayres & Williams and Toson & Baker.
This method has been shown to be sufficiently reliable for populations larger than 5000.
It utilises population estimates and mortality data to calculate a life table, from which the probability of surviving each 5-year age group, given that the previous age group has been survived, is calculated. It estimates the average number of years of life expected for any particular age. In this report only the average number of years of life expected from birth is presented.
The results are reported with 95 per cent confidence intervals.
The main measure of the inequality gap in life expectancy used in this report is the Slope Index of Inequality (SII). The SII is a measure of the difference in life expectancy between the most and least deprived, whilst taking into account the distribution across the whole population. As such, it is a measure that takes account of the social gradient, but summarises this as an absolute gap between life expectancy at the two extremes of the deprivation spectrum.
To measure the inequality gap in mortality rates, this report uses the rate ratio. This is calculated by dividing the rate in the most deprived fifth by the rate in the least deprived fifth. If this rate is greater than one, then the rate is higher in the most deprived fifth. A rate ratio of two means that the rate is twice as high in the most deprived fifth as in the least deprived fifth.
A particular caveat to be aware of concerns the use of population estimates supplied by the Office for National Statistics (ONS). During the preparation of this report, it was discovered that the population aged 85+ has been underestimated in some areas by the ONS estimates. In most parts of Wales, the impact of this issue on life expectancy and mortality rates will be small, and the effect on national figures is likely to be negligible. Further details are available from the webpage linked above.

Frequency of publication

Every two to four years

Data reference periods

2005-2014

Revisions information

Not revised

Weblinks

Original Public Health Wales report on Measuring inequalities: http://www.wales.nhs.uk/sitesplus/922/page/87233

Keywords

Life expectancy, Healthy life expectancy, Well-being of Future Generations

Name

HLTH1599