1. Long Distance Mobility Survey in Denmark 2001/2002
Presentation at Eurostat meeting in Luxembourg 6 – 7 December 2001

2. Method used CATI Blaise application
Background data (apart from register data)
Commuting data
Holiday journeys 4+ nights
Other private journeys 0+ nights
Business journeys 0+ nights

3. Sampling Frame: Central Population Register Every quarter
Update of addresses every month
Search for telephone number every month

4. Interviewing Introduction letter sent 2 days before start of month
Interviewing from first day in the month
Up to 10 calls during the month
Afternoon and evening
Monday to Sunday
3 interviewers

5. Minor revision of CATI in Oct.
September survey has lead to revision of CATI system applied
Journey information on
Destination
Day of start
Day of return
are carried on trip level to support the interviewer
Interviewers are supplied with calendar in order to know Easter, Whitsunday, Ascension Day, other bank holidays, weekends etc

6. Sample 1470 persons 15+ years requested = 125 per month
Gross sample: 217 persons per month
Missing telephone number: persons
No contact: persons
Usable contacts: 125 – 130 persons
Don’t want to participate: 10 persons
Other: 10 persons
Response rate: 58 % (gross); 66 % (net)

7. Non response survey Postal survey Summary questionnaire to persons
Without known telephone number
Not reached
78 persons in September; 28 replies (36 %)
69 in October; 21 replies (30 %)

8. Validation survey 7 persons selected
Not yet lead to corrections of reported data

9. Coding Geographic coding Files for Dateline
will take place in batch jobs on a monthly basis
Files for Dateline
September in the tube