Methods & notes: Demography Profile

This web page was produced as part of the Demography Profile 2009 and as such contains information correct at the time of publication (Autumn 2009). For more up to date information, the interactive map on the Observatory homepage contains a broader set of indicators and is regularly updated. Additional information is also available from the topic based pages.

Area size

 
Subject Demography – Area size
Numerator Welsh Assembly Government, National Statistics data; UK Office for National Statistics
Denominator N/A
Keyword(s) Area, size
Period 2007
Demography N/A
Area UK, Wales, Local Health Boards (LHBs) and Local Authorities (LAs)
Statistics Area in square km
Notes  
Source Data

Population estimates

 
Subject Demography – Population estimates
Numerator Office for National Statistics, Mid-year population estimates
Denominator Office for National Statistics, Mid-year population estimates
Keyword(s) Population estimate
Period 2007
Demography All persons
Area UK, Wales, Local Health Boards (LHBs) and Local Authorities (LAs)
Statistics Number of persons
Notes  
Source Data

Office for National Statistics, Mid-year population estimates

 
 

Registered population

 
Subject Demography – registered population
Numerator The number of people registered with a General Practitioner within the given geographical area
Denominator n/a
Keyword(s) Population, registered
Period 2007
Demography All persons
Area Wales, Local Health Boards (LHBs)
Statistics Counts (thousands)
Notes

Data on England residents were provided by the BSC, dated July 2007, with the exception of data for Betsi Cadwaladr LHB which were dated October 2006.

The counts of English residents registered in April 2009 are similar to those shown above (Betsi Cadwaladr University LHB 6.7, Powys Teaching LHB 3.2, Aneurin Bevan LHB 10.4).

Source Data
  • Wales residents registered with GP practices in Wales or England: National Health Service Administrative Register (NHSAR), managed by Health Solutions Wales;
  • England residents registered with GP practices in Wales: NHS Wales Business Services Centres;
  • Mid-Year Population Estimates: Office for National Statistics
 
 

Population density

 
Subject Demography – Population density
Numerator Office for National Statistics, mid-year population estimates
Denominator Stats Wales, Statistical Directorate, Welsh Assembly Government - Area Size
Keyword(s) Area, size, population density
Period 2007
Demography All persons
Area UK, Wales, Local Health Boards (LHBs) and Local Authorities (LAs)
Statistics
Persons per square km
 
UK Numerator: Office for National Statistics, mid-year population estimates
 
Denominator: Numerator Data were extracted from Office for National Statistics.
 
Uk Standard Area Measurements. [Accessed 2nd Jun 2009].
Notes  
Source Data

Data were extracted from StatsWales, Statistical Directorate, Welsh Assembly Government. [003647] Population by place of residence, area size and population density; mid -2000 onwards. [Accessed 2nd Apr 2009]

 
 

Projected population change

 
Subject Demography – population projections
Numerator Statistical Directorate, Welsh Assembly Government / Office for National Statistics (ONS)
Denominator  
Keyword(s) Population change
Period 2006-2031
Demography Persons in age bands (0-14, 15-24, 25-59, 60-74, 75+) and all ages
Area UK, Wales, Local Health Boards (LHBs) and Local Authorities (LAs)
Statistics Count and percentage change
Notes
  • 2006-based principal population projections for Wales LAs, 2006 to 2031
  • Population projections provide estimates of the population for the future based on assumptions that variables such as fertility, life expectancy and net migration (immigrants-emigrants) will remain constant.
Source Data

2006-based local authority population projections for Wales, 2006 to 2031

Local Authority Population Projections for Wales (2006-based) - Local Authority Report

CAVEATS: Caution should be used when interpreting the percentage change due to the effects of small numbers

 
 

Black and minority ethnic population

 
Subject Demography – Proportion of people who are non-white.
Numerator 2001 Census, Office for National Statistics
Denominator 2001 Census, Office for National Statistics
Keyword(s) Black and minority ethnic groups, BME, Ethnic Groups
Period 2001
Demography Persons - all ages
Area UK, Wales, Local Health Boards (LHBs) and Local Authorities (LAs)
Statistics Percentage by area of residence
Notes  
Source Data

Data were downloaded using Saspac from Census Key Statistics table 6

 
 

General fertility rate

 
Subject Demography – General fertility rate
Numerator Annual District Births Extract, Office for National Statistics
Denominator Mid-year population estimates, Office for National Statistics
Keyword(s) Birth rate
Period 1998-2007
Demography Live births, females aged 15-44
Area UK, Wales, Local Health Boards (LHBs) and Local Authorities (LAs)
Statistics Number of live births, GFR 95% confidence limits
Notes
  • General fertility rate is calculated as the total number of live births divided by the female population aged 15 to 44 years of age.
  • When calculating fertility rates it is important that the events in the numerator (the number of births) correspond to the women included in the denominator (exposed to the risk of having a birth). This may not be the case in practice.
Source Data

Annual District Births Extract, Office for National Statistics, Mid-year population estimates, Office for National Statistics

 
 

Life expectancy

 
Subject Demography – Life expectancy at birth
Numerator 2005-07 death registration data, Office for National Statistics
Denominator 2005-07 mid year population estimates, Office for National Statistics
Keyword(s) Life expectancy
Period 2005-07
Demography All people born 2005-07
Area UK, Wales, Local Health Boards (LHBs) and Local Authorities (LAs)
Statistics Age (years)
Notes

All figures are ‘period’ life expectancies. This is the average number of additional years a person would live if he/she experienced the age-specific mortality rates of the given area and time period for the rest of their life.

Therefore, it is not the number of years someone in the area in that time period is actually likely to live, because death rates are likely to change and people may live in different areas during their life.

Source Data

New LHB data supplied by Health Statistics and Analysis Department, Welsh Assembly Government. Old LHB data downloaded from StatsWales website.

 
 

Welsh Index of Multiple Deprivation (WIMD)

 
Subject Deprivation
Numerator LSOAs in most deprived fifth of LSOAs using the Welsh Index of Multiple Deprivation (WIMD)
Denominator Total number of LSOAs
Keyword(s) Deprivation and poverty
Period 2008
Demography All person
Area Lower Super Output Areas (LSOAs)
Statistics Scores, fifths and percentages
Notes
  • Geographically based deprivation measures can be used to show inequalities in health and suggest areas likely to most need measures to improve health and manage ill-health. The Welsh Index of Multiple Deprivation 2008, is produced at a small area level called Lower Super Output Area (LSOA), and is derived from a broad range of factors.
  • Deprivation fifth - we have divided the distribution of deprivation into five groups (four cut-points) for the analysis. Our choice of the number of groups was arbitrary but was made on the expectation that five groups, however defined, are sufficiently large to avoid most small numbers problems and are sufficiently small to provide discrimination between the two extremes. We defined cut-points for the groups so that each fifth has an equal number of lower super output areas.
Source Data

http://www.dataunitwales.gov.uk/News.asp?id=SXAE49-A77FBC73

 
 

Disability

 
Subject Demography – People with a physical/sensory disability
Numerator Local Government Data Unit Wales
Denominator Local Government Data Unit Wales
Keyword(s) Physical, sensory, disability
Period March 31st 2008
Demography All people aged 18 and over
Area Wales, Local Health Boards (LHBs) and Local Authorities (LAs)
Statistics Number on register by area of residence
Notes It is important to note that registration is voluntary. Numbers include people registered under Section 29 of the National Assistance Act 1948 who are normally resident in the LA.
Source Data Data were downloaded using the Data Unit Wales Dissemination Tool (Gwion).
 
 

Carers

 
Subject Demography - Carers
Numerator Local Government Data Unit Wales
Denominator Local Government Data Unit Wales
Keyword(s) Carer
Period April 1st 2007 – March 31st 2008
Demography All people aged 16 and over
Area Wales, Local Health Boards (LHBs) and Local Authorities (LAs)
Statistics Number by area of residence
Notes The numbers are identified carers during a 12 month period.
Source Data

Data were downloaded using Data Unit Wales Dissemination Tool (Gwion).
 
CAVEATS:  Care should be taken when using these data as 2007-08 was the first year data were collected. Data quality will improve with time.

 
 

Older people living alone

 
Subject Demography - Older people living alone
Numerator 2001 Census, Office for National Statistics
Denominator 2001 Census, Office for National Statistics
Keyword(s) Older people
Period 2001
Demography All people aged 75 and over
Area UK, Wales, Local Health Boards (LHBs) and Local Authorities (LAs)
Statistics Percentage by area of residence
Notes It is important to note that the denominator includes older people living in communal establishments.
Source Data

Data were downloaded using Saspac from Census Area Theme Table 2

 
 

Deaths

 
Subject  Demography – Deaths under the age of 75
Numerator England & Wales: Office for National Statistics – Annual District Death Extract and Vital Statistics tables, Scotland: General Register Office – Vital Events tables, Northern Ireland: NI Statistics and Research Agency and NISRA Vital Statistics tables
Denominator England & Wales: Office for National Statistics – Mid-Year estimates, Scotland: General Register Office – Vital Events tables, Northern Ireland: NI Statistics and Research Agency and NISRA Vital Statistics tables
Keyword(s) Mortality
Period 2007
Demography All death registrations made in 2007, for people aged under 75, and ordinarily resident in the UK
Area UK, Wales, Local Health Boards (LHBs) and Local Authorities (LAs)
Statistics European age standardised rate per 100,000 population with 95% confidence intervals.
Notes 95% confidence intervals calculated using Dobson method (Dobson AJ, Kuulasmaa K, Eberle E & Scherer J (1991). Confidence intervals for weighted sums of Poisson parameters. Stat Med: 10, 457-462)

Last updated: 06 March 2014