Dear all,
On Wednesday 6th May, the RSS Leeds/Bradford local group will be hosting a series of talks on
"statistics and migration" by Peter Bowden (Edge Analytics) and Paul Norman (University of Leeds).
Further details can be found on our webpage:
http://www.maths.leeds.ac.uk/statistics/rss/archive/previous_2009.html#MIGRATION
All welcome!
Regards, Paul
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Dr. Paul D. Baxter
Secretary/Treasurer, RSS Leeds/Bradford Local Group,
Department of Statistics, University of Leeds, Leeds, LS2 9JT, UK.
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Leeds/Bradford: Wednesday 6 May, 4.00pm, Leeds University.
Statistics and migration
Peter Bowden (Edge Analytics).
International Migration: The local impact of uncertainty in national statistics
International migration has become a significant driver of population change in the UK but the
methods available to estimate its true impact upon local areas remains constrained by inadequate
systems of measurement and data capture. In the absence of a population register, statistics on
immigration and emigration which drive local population estimates and projections are derived from a
combination of survey and census sources. This presentation introduces some of the issues involved
in estimating migrant numbers and uses the local authority areas of Yorkshire and the Humber as a
case study illustration of how uncertainty in measurement can effect key population statistics.
Paul Norman (University of Leeds).
Migration: a "common bugbear in epidemiological or ecological studies"
The quote in the presentation title is taken from (Learmonth 1988: 122). A fundamental question
underlying many aggregated health analyses is whether the risk of disease in an area is greater than
expected in comparison with the national experience. It is important then to use reliable numerators
of disease/mortality cases and denominator 'populations at risk' for the geographical areas of
interest. Population migration affects health rate calculations in various ways. As we move house,
we take our health and other attributes with us so we directly change the numerator and denominator
counts. However, unless a country operates a population register, we are not well counted when we
move. Migration introduces a degree of uncertainty into the calculation of area based
disease/mortality statistics. Focusing on subnational areas in the UK, this presentation will
discuss and give some research examples relating to these issues.
Reference: Learmonth A (1988) Disease Ecology: an Introduction. Basil Blackwell: Oxford.
The meeting will be held at Leeds University, Room GR.G23 (Geography East Lecture Theatre) in the
School of Geography. The meeting will start at 4pm with refreshments from 3.30pm.
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