Blaise 5 software

Two people in a physical conversation take a survey for an investigation

Blaise® is a computer-assisted interviewing (CAI) system and survey processing tool developed by CBS (Statistics Netherlands) for official statistics and complex surveys. Since its conception in the 1980s, Blaise has become the go-to tool for complex survey production. A wide variety of studies are conducted with Blaise, such as social surveys, business and economic surveys, panel studies, and censuses.

Blaise connects over a hundred National Statistical Institutes and research organisations across the globe. Within this community, advanced users specify new product requirements. This guarantees that Blaise adapts to new challenges of the survey world continuously.

The latest version, Blaise 5, provides full control over every aspect of your survey process. The system helps you design questionnaires for all modes of interviewing such as computer-assisted personal interviewing (CAPI), computer-assisted telephone interviewing (CATI), computer-assisted self interviewing (CASI), or computer-assisted web interviewing (CAWI). What is unique to Blaise 5 is that you design your questionnaire once, and can then run them on any device or software platform, online or offline. During your questionnaire design, you specify all layout aspects, screen wordings, and routing rules. This gives you full control over how your questionnaire looks and behaves in different interviewing modes and on varying screen sizes of your respondents' displays.

The video below shows Blaise 5's concepts of multimode, multi-device, multiplatform, multilingual and multinational questionnaires in action. 


Blaise 5's extensive capabilities include:

  • 'Out-of-the-box' support for multimode (mixing and matching different interviewing modes) and hybrid-mode (respondents can switch devices during an interview)
  • Fully customisable interviewer interfaces
  • Apps and a case management application for online and offline data collection
  • A dashboard for CATI management
  • A Server Manager to help you set up your server park
  • A powerful and straightforward questionnaire definition language
  • Data review and editing (Computer-Assisted Data Input, CADI)
  • User-friendly support for add-on components (.NET assemblies)
  • An open system architecture helps you integrate Blaise with non-Blaise systems and software
  • Comprehensive documentation
  • In-depth support
  • Templates and samples for your questionnaire design. 
Visit for more information about Blaise.

Blaise logo and payoff