Mixed mode: the best of each methodology in one project.


Online, offline, and phone: collect data in multiple ways.

Phone, web, and face-to-face interviews, all at the same time and in a single project. With IdSurvey’s mixed-mode, you can combine and manage all methodologies in a single survey, with one questionnaire and one database. You can start interviews by phone and send the link for the respondent to complete the questionnaire online. You can recruit new contacts and schedule an email campaign to have them complete the interviews online. Mixed-mode breaks down the limitations of individual methodologies and makes your data collection more agile.
Multi-mode survey interviews

Native multi-mode

IdSurvey allows the activation of multiple distribution channels CATI, CAWI, and CAPI within the same project, according to specific needs, even after the launch of the survey and tailored to specific samples.

Switch modes

With IdSurvey you can switch from one data collection mode to another at any time, even if the interview is in progress. Partial interviews will be picked up exactly where they left off.

A single control center

With IdSurvey, you have a single administration panel where you can manage the settings of the individual modes. Everything is perfectly integrated if you choose Multi-Mode.

A single questionnaire

In IdSurvey, you don’t have to rewrite or adapt the survey to other modes. Create the survey once and then distribute it in any of the modes, even simultaneously.

Logic and text based on the mode

Set the questionnaire rules and customize texts for different modes. You can insert questions visible only in online interviews or add texts visible only to the agents.

Combined results

All the data collected by the three methods – telephone, online and offline – merge into a single database and are always ready for download or check real-time analysis.

Single contacts list

Use a single contacts list and set the distribution criteria. You can also choose to assign a contact to multiple modules. With IdSurvey you have absolute control over the distribution of the interviews.

Organized outcomes

In IdSurvey, refusals, out-of-quota, and any other contact outcomes are shared to all methodologies. This way, you don’t have to worry about updating contacts between methodologies. Everything happens smoothly and automatically.

Switching tools

IdSurvey integrates tools to simplify or automate the switch between modes. For example, CATI interviewers can send emails or SMS with pre-set messages containing the link to the online questionnaire.

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Methodologies compared: advantages and disadvantages of data collection via telephone, web and on field. (CATI, CAWI and CAPI)


CATI methodology (Computer Assisted Telephone Interview) improved telephone interviewing process. In fact, a software automatically support and lead the interviewer during data collection. Thus, they see questions on the screen followed by possible answers. For this reason, it has several advantages:
  • high quality of collected data: you avoid any interviewer misinterpretation or incorrect question administering;
  • time reduction: automatic callback managed by the system. The interviewer can also directly insert the data with no use of paper;
  • more accuracy: being completely automated, there’s no room for mistakes or unclear compiling;
  • complete control on interviews progress: you can check in real time completed, incomplete and dropped interviews.


Web revolution has been crucial to market research evolution. This is particularly true for CAWI methodology (Computer Assisted Web Interviewing). Back in the days, with CAWI you could reach just around 20% of the population. So it was used just for limited purposes. Today, you reach wide and generic population (an entire country, a multinational corporation…). A link is sent to the respondents via email. They just follow the link to complete the questionnaire. Main characteristics of CAWI method are:
  • 1. the software autonomously send the emails and takes care of their following classification. Finished questionnaires are marked as complete.
  • 2. the respondent is invited via email and clicks on the link to answer the questionnaire. Obviously you need to have all email addresses of your respondents to carry on a CAWI survey.


CAPI method (Computer Assisted Personal Interview) is the tech evolution of Face to Face research. An interviewer collects the data in a face to face meeting with the respondent. Using a mobile device or PC even offline, the interviewer carry on the interview and send back the answers in real time. Data are immediately sent to the main server. CAPI is used a lot in Mystery Client research: mystery clients can discreetely complete their task in their smartphone or mobile device.

Observations on CATI CAWI CAPI Surveys

To sum up, we compared CATI CAWI CAPI Surveys. And each one of them represented a step forward for market research. Now it’s time for some observations on the actual effectiveness of these methodologies. CAWI methodology has several advantages but requires all respondents to have an email account and a basic knowledge of computers to correctly complete the questionnaire. CAPI methodology’s biggest quality is the real face to face interaction between respondent and interviewer. In contrast, the average number of completed interviews in a working day is usually lower than CATI. CATI methodology guarantees the benefits of the other two techniques above. Specifically, an heterogeneous target and the call agent that can help the respondent during the interview. But CATI is still the most expensive method because of higher costs linked to the call center, the interviewers and phone traffic.