Methods & notes: Demography Profile

Registered population

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).

• 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

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

• 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.

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

Data were downloaded using Saspac from Census Key Statistics table 6

General fertility rate

• 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.

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

Life expectancy

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.

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)

• 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.

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

Disability

Carers

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

Data were downloaded using Saspac from Census Area Theme Table 2

Deaths