2007 public attitudes to road safety survey appendices

Summary | Appendix B 
 

Appendix A: Sample details

 
This survey of New Zealand public attitudes to road safety is carried out annually. In the 2007 survey, 1640 New Zealanders aged 15 and over were interviewed face to face in their own homes in towns, cities and rural areas throughout the North and South Islands of New Zealand. Sampling and fieldwork for the survey was carried out by the National Research Bureau (NRB). 

All people aged 15 years of age or more who are usually resident in permanent private dwellings were eligible for selection as respondents. A minimum of 100 adults was sampled in each of the 14 Local Government Regions (Tasman, Nelson and Marlborough were treated as one region for the purpose of this survey). Sampling was carried out at meshblock and dwelling level in such a way as to ensure an equal probability of selection for every permanent private dwelling in mainland New Zealand. Within each selected dwelling, one occupant was selected for interview according to a random selection scheme. Five interviews were carried out in each meshblock. Where no response could be obtained from a selected dwelling after four calls, another dwelling was substituted.

A response rate of 61% was obtained. Reasons for 'non-response' included refusals, households where no contact could be made after four attempts, households where no person spoke sufficient English to participate in the survey, and dwellings which were inaccessible because of security features or guard dogs. 

Trained National Research Bureau staff conducted the interviews. Each interviewer's work was checked and audited by NRB supervisors.
 
Raw data were weighted by age group, region, gender and number of eligible respondents within the sampled dwelling, to adjust for any imbalances between the achieved sample and the population structure.

Sample sizes and weighting factors

Note: Rounded weights are shown. True weights used add to 1640.

Appendix B: Tables

Appendix B contains summary tabulations of responses to major questions. Please download Appendix B (PDF v0.7, 320kb).


Summary | Appendix A