Analysis over time

Sandra Short

Time Use Survey & Omnibus Survey

What will be included

• UK 2000/01 Time Use Survey summary

• NS Omnibus Survey & time diaries in 2005

• Comparison of 2000/01 with 2005 process and results

• Others who use the NS Omnibus survey to create a time series

UK 2000/01 Time Use Survey

Household survey for 12 months including:

CAPI • Household questionnaire

• Individual questionnaire

Self-completion• 2 x 24 hr diaries – 1 week day + 1 weekend day

• 7 day work & education sheet

UK 2000/01 Time Use Survey

Time diaries• Diary in 10 minute time slots• Own words description of main activity• Plus secondary activity• Where they were• Tick box for who they were with

Main & secondary activities coded to 260 activity codes

Triangulation

• Pre-coded diaries on NS Omnibus Survey in May 1995 & May 1999

• Improved upon for a diary in July 2001 whilst the full TUS was still in the field

• Direct comparison of 2 diary methods for same time period

• Minor improvements made for pre-coded diary used in 2005

NS Omnibus survey time diary

NS Omnibus individual survey in 4 separate months included:

CAPI• Omnibus classificatory questions

Pre-coded paper diary with interviewer• 1 designated diary day which may have been up to

2 days before the interview

NS Omnibus Survey time diary

Time diaries• Diary in 10 minute time slots

• 30 pre-coded activities

• Plus secondary activity

• Home or elsewhere

UK 2000/01 TUS v 2005 NS Omnibus • Fieldwork TUS – 12 months

Omni - 4 months – Feb, June, Sep, Nov

• Respondents TUS - All in household aged 8+Omni - 1 person in household aged 16+

• Diary day TUS - 2 designated diary days Omni -1 day (previous day recalled)

• Completion TUS – self completion Omni – with interviewer

• Activity detail TUS – own words to 260 codes Omni – 30 pre-codes

• Location TUS – recorded Omni – Home or elsewhere

• Who with TUS – recorded Omni – not recorded

UK 2000/01 TUS v 2005 NS Omnibus

• Achieved diaries TUS – 21,000 (12mths)Omni – 5,000 (4mths)

• Net diary response ratesTUS – 45%

Omni – 59%

UK 2000/01 TUS v 2005 NS Omnibus

Difficulties in using the 2 methods

• Self-completion v interviewer lead

• Activity coding frames – Ensuring data was comparable– Improving the 2000 coding

• The 2005 dataset had to be useful in its own right

• Detail of analysis possible

Time use 2000 to 2005

• 7 minutes more sleep and rest• 31 minutes less housework• 4 minutes more childcare• 26 minutes more social life

• 5% less people participated in sport & outdoor activities

• 15% less people participated in reading

Summary

• Pre-coded diary fieldwork had to take place when main survey was in the field

• Data from the 2 methods had to be comparable or differences explainable

• A useful measure at a broad level of whether the use of time is changing

• Approximately one tenth the cost of a full household time use survey

• www.statistics.gov.uk/timeuse • Micro data at the ESDS data archive

Other use of the NS Omnibus Survey over time

Obtain information on a regular basis where a separate survey cannot be justified

Question sets can be altered at short notice to measure the effectiveness of publicity campaigns, awareness of new policies or impacts of other events

The Omnibus Survey runs in all 12 months of the year, clients can choose which and how many months meet their particular requirements

NS Omnibus client examples

• Information centre for health and social care– Smoking related behaviour and attitudes – Contraception and sexual health– Drinking: adults behaviour and knowledge

• Department for work and pensions– Disability

• Cancer Research UK– Sunsmart

• National Council for Voluntary Organisations– Charitable giving

Conclusion

• Omnibus survey flexible, efficient and relatively inexpensive way of collecting data over time

• Omnibus can be used to identify or monitor change over time as in the case of time use data between larger surveys or for time series in their own right

• UK is currently a world leader in pre-coded time use diaries and Eurostat will be including this option in their next set of time use data collection guidelines