html5-img
1 / 21

Comparing a 2 and 7 day registration diary in time-use research Evaluating the EUROSTAT guidelines

Comparing a 2 and 7 day registration diary in time-use research Evaluating the EUROSTAT guidelines. Contact: Joeri.Minnen@vub.ac.be Ignace.Glorieux@vub.ac.be Vrije Universiteit Brussel (Belgium) Paper prepared for the European Conference on Quality in Official Statistics, 8-11 July, Rome.

shelley-whitney
Télécharger la présentation

Comparing a 2 and 7 day registration diary in time-use research Evaluating the EUROSTAT guidelines

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Comparing a 2 and 7 day registration diary in time-use researchEvaluating the EUROSTAT guidelines Contact: Joeri.Minnen@vub.ac.be Ignace.Glorieux@vub.ac.be Vrije Universiteit Brussel (Belgium) Paper prepared for the European Conference on Quality in Official Statistics, 8-11 July, Rome

  2. Time-use registrationGoals HETUS-project • Since Szalai a number of conventions with regard to the methodology of time budget research have been established • Nevertheless: a great variety of recording methods at the moment of recording the information still exists • Fixed / open time interval • Precoded activity list / after coding • Number of diary days recorded • … • HETUS: one general guideline for all member countries => Guidelines for recording the time-use information European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  3. Time-use registrationGoals HETUS-project • Collecting time-use information in a comparable way => Harmonisation • To make comparisons between countries possible • Major concerns • Design of the diary • Field work • Our interest centres on the recommendation regarding the number of diary days European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  4. Time-use registrationRecommendations to the number of diary days • It is recommended to use two diary days, i.e. one weekday (Monday-Friday) and one weekend-day (Saturday and Sunday) • It is strongly recommended that diary days/dates be allocated to households/individuals by a controlled random procedure • It is recommended that the survey days/dates are representative of, and cover a full 12 month period European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  5. Time-use registrationPresenting the time-use results • Calculating estimates for: • Weekdays (Monday-Friday) • Saturday • Sunday • All days of the week (Monday-Sunday) • Synthetic workweek: weekday*5 • Synthetic weekend: weekend day*2 • Synthetic week: (weekday*5)+(weekend day*2) European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  6. Time-use registrationGoal this presentation • Rationale for 2 vs. 7 days: • Costs of fieldwork • Response rate • Learning/boredom • Number of respondents • Zero observations • Intra-personal variability • More statistical options • … • Testing the consequences of the recommendation of recording only 2 days instead of 7 consecutive days European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  7. Time-use registrationDaily vs weekly cycles: an example • The week cycle is an important cycle in our social life • F.e. working time, work during weekdays, week/weekend contrast, the specific character of Sunday and Saturday in the weekcycle • Certain activities follow a weekcycle and occur once or several times a week • F.e. sports, social life, taking part in associations, cleaning, … European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  8. Time-use registrationData used • Flemish time budget dataset • Respondents filled in 7 consecutive days, starting day was randomly determined • Pooled dataset • 1999 in total 1394 respondents • 2004 in total 1860 respondents • Open time interval / precoded activity list European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  9. Time-use registrationCreating 2 day dataset • Selection of 2 days with the guidelines of EUROSTAT in mind • Selection of the weekday (total, n=3.254) was not random => We selected the first registration day if it was a weekday => If not, randomly selected one weekday • Selection of Saturday or Sunday (total, n=3.254) was random • Weighting • Socio-demographic (sexe, age & education) • Diary days (Mon=Tue=Wed=Thu=Fri); (Sat=Sun) European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  10. Time-use registrationMean time/week, hours and minutes: all respondents European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  11. Time-use registrationFrequency of activities European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  12. Time-use registrationResults in words • The estimates on population level between 2-day and 7-day registration for a synthetic week are comparable • Positive and negative factors (methodology & quality) keep each other in balance • The largest difference is 18 minutes for the activity ‘Sleep & rest’, however as a percentage of the total time spent sleeping and resting it is nearly 0 • Essential conditions: • Large(r) sample • With respect to the length of the registration period • Equal dispersion of the diary days European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  13. Time-use registrationMean time/week, hours and minutes: all respondents European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  14. Time-use registrationResults in words • Due to a lower sample size, the results are less stable • Individual diary days are represented by a smaller number of respondents • Some activity groups are less biased, there is an indication that ‘the more a (sub-) population takes part in an activity as a group, the less a large sample size is needed for a good estimation.’ • Socio-demographical variables / breakdowns to: • Sexe / age / education / … • Sexe x age / … • Closer look with other (international) data -> lager sample European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  15. Time-use registrationVariation in different days of the week • Kalton (1985) variability across the weekdays, Monday till Friday is relatively small • Stinson (2000) finds evidence that the activity pattern of Friday is different from the other weekdays, and also from Saturday and Sunday And, could change even more in the future • Szalai T-Test • Results pooled dataset European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  16. Time-use registrationParticipation rate • Time-use accounting identity => Ti=PiT’i Ti = mean time population; Pi = population participation rate; T’i = mean time participants • Participation rate per day, or average along longer period HETUS Pi(weekday)=(Pi(mon)+Pi(thu)+Pi(wed)+Pi(thu)+Pi(Fri))/5 • Participation rate across f.e. weekday 7-day registration Pi(weekday)=Pi(Mon thru Fri) • F.e. trafic gestion European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  17. Time-use registrationRhythm of a weekday (Mon-Fri) European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  18. Time-use registrationParticipation rates European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  19. Time-use registrationCumulative participation rate European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  20. Time-use registrationConclusions • Weekcycle is an important rhythm is our society • Estimations on population level for a synthetic week on basis of a 2-day registration is comparable with a 7-day registration, the sample size is nevertheless an important factor • Participation rate and mean time per participants can not be calculated for a weekcycle • To understand individual behaviour it is appropriate to collect information over 7 consecutive days • The actual length of the diary period relies on the purpose of the research European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

  21. Time-use registrationFuture tasks • Try to find a method / circumstances to extrapolate participation rates • Make comparisons with international datasets with a larger sample size to test our findings and broaden our recommendations European Conference on Quality in Official Statistics, 8-11 July 2008, Rome

More Related