statistical directorate public health improvement division cath roberts & rachel dolman welsh...

Statistical Directorate

Public Health Improvement Division

Cath Roberts & Rachel Dolman

Welsh Assembly Government



Contents

1. Background

2. Data collection

3. Response

4. Results

5. Future plans

Further information & contacts



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)



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



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



4. Results

4.1 Publication schedule

4.2 Some 2003/04 results



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



4.2 Some 2003/04 results



Health status, illnesses and other conditions



% of adults who reported being treated for various illnesses, or having certain conditions, 2003/04



% 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



Age-standardised % of adults who reported being treated for arthritis, by local authority, 2003/04 (provisional)



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



Health-related lifestyle



% 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



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



% 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



Age-standardised % of adults who met physical activity guidelines, by local authority, 2003 /04 (provisional)



Use of health services



% 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



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



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



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



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



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



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:

[email protected]

[email protected]

statistical directorate public health improvement division cath roberts & rachel dolman welsh...

Documents

health questionnaire

health service use

provisional slide

health related lifestyle

selected health services

general health wellbeing

monitor health targets

service use slide