Data Management and Analysis Ethnic group statistics from the last two Censuses: New Opportunities, New Pitfall 8 December 2003 Ms. Baljit Bains Senior Research and Statistical Analyst, Ethnic Demography
Data Management and Analysis Ethnic group statistics from the last two Censuses: New Opportunities, New Pitfall 8 December 2003 Ms. Baljit Bains Senior.
Mar 28, 2015
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Data Management and Analysis
Ethnic group statistics from the last two Censuses: New Opportunities, New Pitfall
8 December 2003
Ms. Baljit Bains
Senior Research and Statistical Analyst, Ethnic Demography
Data Management and Analysis
Contents
The Ethnic Question in the Census
How 1991 ethnic categories relate to the 2001 categories
Main issues to overcome
Illustrated case study
What data do we have available and what do we need?
Any possible solutions at this stage
GLA Ethnic Group Population Projections: Future Plans
Data Management and Analysis
Data Management and AnalysisData Management and Analysis
The Ethnic Question in the Census
1991 •10 distinct categories with write-in answers for Black Other and Other
2001 •5 broad categories with sub-sections within each category•16 separate categories in total in 2001
What influences the way the ethnic question is answered?•Individual•Structure of question
Both are susceptible to change over timeBoth are inter-related
Ultimately the census results reflect the way in which a QUESTION was ANSWERED!
Data Management and Analysis
Data Management and Analysis
1991 Ethnic Group Categories
Chinese
All other Ethnic group
Other Asian
Bangladeshi
Pakistani Indian
Black Other
Black African
Black Caribbean
White
Data Management and Analysis
2001 Ethnic Group Categories
White BritishWhite Irish
White Other
Mixed - White/ Black Caribbean
Mixed - White/ Black African
Mixed - White Asian
Mixed - Other
Black/ Black British - Caribbean
Black/ Black British - African
Black/ Black British - Other
Asian/ Asian British - Indian
Asian/ Asian British - Pakistani
Asian/ Asian British - Bangladeshi
Asian/ Asian British - Other Asian
Other Ethnic Group
Chinese
Data Management and Analysis
T h e P a te l F a m ily
A ge : 22B rit ish B o rn
M r P a te lU g an da n B o rn
F a m ily o rig in s : G u ja ra t, In d iaR e lg ion : H in d u ism
A ge : 19B rit ish B o rn
A ge : 17B rit ish B o rn
M rs P a te lB rit ish B o rn
F a m ily O rig in s : G u ja ra t, In d iaR e lig io n : H in d u ism
Data Management and Analysis
What data we need and what data we have
Ideally, Individual level information on respondents and their answers for both 1991 and 2001
In reality what do we have:
Coding frames from 1991 and 2001
Census Commissioned tables
SARs
Longitudinal Survey
Data Management and Analysis
What end product would we like?
Moving from 1991 to 2001 - possibly backwards too
Matrix of 2001 categories and how they are apportioned to 1991
Formulae
Grossing factors
Usability and ease
Data Management and Analysis
GLA Population Projections by Ethnic Group
Data Management and Analysis
Main Issues to overcome
How many groups shall we project for? 10/16
Detail – SYA/Sex/LBs
Geographies
Comparability with 1991 census data
Still reliant on country of birth data – getting weaker with time
Special groups – recent migrants
Data Management and Analysis
Non White Ethnic Groups in Greater London
0
50,000
100,000
150,000
200,000
250,000
300,000
350,000
400,000
450,000
500,000
Whi
te a
nd B
lack
Carib
bean
Whi
te a
nd B
lack
Afric
an
Whi
te a
nd A
sian
Othe
r Mixe
d
Indi
an
Pakis
tani
Bang
lades
hi
Blac
k Ca
ribbe
an
Blac
k Af
rican
Othe
r Blac
k
Chin
ese
Othe
r Eth
nic
Grou
p
Othe
r Asia
n
Population
Data Management and Analysis
Suggested ethnic groupings A
0
50000
100000
150000
200000
250000
300000
350000
400000
450000
500000M
ixed
Indi
an
Pakis
tani
Bang
lades
hi
Blac
k Ca
ribbe
an
Blac
k Af
rican
Othe
r Blac
k
Chin
ese
Othe
r Eth
nic
Grou
p +
Othe
rAs
ian
popu
latio
n
White and Black Caribbean
White and Black African
White and Asian
Other Mixed
Indian
Pakistani
Bangladeshi
Black Caribbean
Black African
Other Black
Chinese
Other Ethnic Group
Other Asian
Data Management and Analysis
Suggested Ethnic Groupings B
0
50000
100000
150000
200000
250000300000
350000
400000
450000
500000
Indian Pakistani Bangladeshi Other Asian+ Mixed:White and
Asian
BlackCaribbean
BlackAfrican
Other Black+ Mixed:White and
BlackCaribbean +
Mixed:White and
BlackAfrican
Chinese OtherEthnic
Group +Mixed:OtherMixed
Indian
Pakistani
Bangladeshi
Other Asian
White and Asian
Black African
Black Caribbean
Other Black
White and Black Caribbean
White and Black African
Chinese
Other Ethnic Group
Other Mixed
Data Management and Analysis
Incorporate new data where we can
Coding frames from 1991 and 2001
Hospital Episode Statistics (HES) for fertility
Census Commissioned tables help link births across ethnic groups - work in progress
Data Management and Analysis
Additional Work
Outside the model
Special cases: recent migrants, ASVS, groups not projected
Developing ethnic data with other experts in the field
• Ethnic Data Users Group• Guidance/collaboration with ONS
Data Management and Analysis
Contact details:
Ms. Baljit BainsData Management and Analysis Group
Greater London AuthorityCity Hall
5th East, Post Point 14The Queen’s Walk
LondonSE1 2AA
Tel: 020 7983 4613
Email: [email protected]
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