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Statistical Directorate
Public Health Improvement Division
Cath Roberts & Rachel Dolman
Welsh Assembly Government
Statistical Directorate
Public Health Improvement Division
Contents
1. Background
2. Data collection
3. Response
4. Results
5. Future plans
Further information & contacts
Statistical Directorate
Public Health Improvement Division
1. Background
• Continuous survey on the Welsh population’s health status, health-related lifestyle and health service use
• Aims:– Provide estimates at Wales & local authority level, and for sub-groups
– Inform and monitor health targets, indicators and policies
– Information for NHS resource allocation in Wales
• Contract for 2003 – 2006 (and 2007-2008) fieldwork awarded to the National Centre for Social Research (NatCen)
Statistical Directorate
Public Health Improvement Division
2: Data collection• Aim for achieved sample over each year:
– 15,000 adults
– 3,500 children
– minimum of 600 adults per local authority
• Mode of data collection: Short household interview
15 mins
Adult self-completion questionnaires, all 16+ 16 pages
Child self-completion questionnaires, all 0-15 2 pages (completed by parent/guardian)
Self-completion questionnaires collected by interviewer
Statistical Directorate
Public Health Improvement Division
3. Response
• Response rates (first twelve months)– households 74% – self completion
• adults 85% • children 87%
• Achieved sample size i.e. number of questionnaires received (first twelve months)
– 16,300 adults– 4,300 children
Statistical Directorate
Public Health Improvement Division
4. Results
4.1 Publication schedule
4.2 Some 2003/04 results
Statistical Directorate
Public Health Improvement Division
4.1 Results: publication schedule
• Annual report– 2003/04 report published July 2005
– 2004/05 report to be published August 2006
• Local authority information– rolling 2-year basis
– 2003/05 report due September 2006
• Dataset– 2003/05 dataset available through UK data archive by end 2006
Statistical Directorate
Public Health Improvement Division
4.2 Some 2003/04 results
Statistical Directorate
Public Health Improvement Division
Health status, illnesses and other conditions
Statistical Directorate
Public Health Improvement Division
% of adults who reported being treated for various illnesses, or having certain conditions, 2003/04
Statistical Directorate
Public Health Improvement Division
% who reported being treated for one illness, or two or more illnesses, by age, 2003/04
0
20
40
60
80
100
16-24 25-34 35-44 45-54 55-64 65-74 75+
Age group
Per
cent
1 illness 2 or more illnesses
Figure 3m: Percentage who reported being treated for one illness, or two or more illnesses, by age
Statistical Directorate
Public Health Improvement Division
Age-standardised % of adults who reported being treated for arthritis, by local authority, 2003/04 (provisional)
Statistical Directorate
Public Health Improvement Division
Age-standardised % of adults who reported a limiting long-term illness, by National Statistics Socio-economic Classification of the household reference person, 2003/04
0
10
20
30
40
50
Managerial &professional
Intermediate Routine and manual Never w orked andlong-term
unemployedNS-SEC
Per
cen
t
Statistical Directorate
Public Health Improvement Division
Health-related lifestyle
Statistical Directorate
Public Health Improvement Division
% who reported binge-drinking alcohol on at least one day in the past week, by age and sex, 2003/04
0
10
20
30
40
16-24 25-34 35-44 45-54 55-64 65-74 75+
Age group
Per
cent
Men Women
Statistical Directorate
Public Health Improvement Division
Self-reported smoking status of adults, by sex, 2003/04
0%
20%
40%
60%
80%
100%
Men Women
Never smoked
Ex-occasional smoker
Ex-daily smoker
Current occasional smoker
Current daily smoker
Statistical Directorate
Public Health Improvement Division
% of adults who were obese, by age and sex, 2003/04
0
5
10
15
20
25
30
16-24 25-34 35-44 45-54 55-64 65-74 75+
Age group
Per
cent
Men Women
Statistical Directorate
Public Health Improvement Division
Age-standardised % of adults who met physical activity guidelines, by local authority, 2003 /04 (provisional)
Statistical Directorate
Public Health Improvement Division
Use of health services
Statistical Directorate
Public Health Improvement Division
% of adults who reported using selected health services in the past twelve months, 2003/04
0 10 20 30 40 50 60 70 80 90
In hospital as aninpatient
In hospital as a daypatient
Chiropodist
Health visitor, districtor community nurse
Optician
Dentist
Pharmacist
Percent
Statistical Directorate
Public Health Improvement Division
5. Future plans
• Current survey fieldwork phase ends October 2006
• Next phase of fieldwork starting January 2007
– NatCen awarded contract for 2007 and 2008 fieldwork
• Current WHS will be reviewed
– Design won’t change much
– Some adult questions may change
– Major changes to the children’s health questionnaire
Statistical Directorate
Public Health Improvement Division
5.1 Data collection for children
• Feasibility study and user consultation in 2004 examined alternative approaches
and potential for broader child survey
– identified a need for more information
– suggested extending WHS
• Need to test whether extending data collection for children affected response to
the survey
• Extended data collection for children tested quarter ending January 2006
Statistical Directorate
Public Health Improvement Division
5.2 Design of experiment
• Split sample experiment as part of ‘normal’ fieldwork
– randomly allocate half the addresses in an interviewer’s workload to…
– sample A: follow ‘normal’ WHS procedure
– sample B: extended data collection for max of 2 children
• Topics covered
– ‘normal’ WHS asks about illness and accidents
– experiment included general health & well-being, physical activity, infant feeding, eating habits, heights & weights and service use
Statistical Directorate
Public Health Improvement Division
5.3 Results of experiment: response
Response achieved for measurements for eligible children in co-operating households of sample B:
– height 70%
– weight 70%
Response Sample A (usual survey procedure)
Sample B (extended survey for children)
OutcomeEligible no Response rate Eligible no Response rate
1,439 76.6% 1,417 75.4%
Not a real difference
Adults2,070 89.9% 2,009 90.7%
Children515 91.5% 406 86.7% Sig
difference
Statistical Directorate
Public Health Improvement Division
5.4 Results of the experiment: summary
• Response– household and adult response unchanged– slightly lower achieved sample of children
• Cost– interviewers at household for 20 minutes longer
• Better dataset– able to calculate good estimates of childhood obesity– richer dataset for children
• Implement extended collection from 2007
Statistical Directorate
Public Health Improvement Division
Further information
Websites:
http://new.wales.gov.uk/legacy_en/keypubstatisticsforwalesdatacollection/health/health-survey/health-survey.htm
www.wales.gov.uk/statistics
www.natcen.ac.uk
E-mail contacts: