About Panelindex
Panel Size

- 3,710,000 active members in Panelindex till June , 2010.
- Active members are those who have involved in activities of idiaoyan in last 12 months.
Panel Size

Panelindex source
Advantage of Panelindex












Panel Recruitment
Data Collection and Management
5 categories of panel info collection:
Demography character: region/city, gender, age, salary, education etc.
Family character: marriage, income, family size (member), asset possession (car & house etc).
Career: company type, position, company size, work years etc.
Social psychology character: values, hobby, personality etc.
Behavior: internet usage, investment etc.
About 39% of the 3,710,000 members fill in the above information completely. The members will update personal info via our characteristic paper every year.
We keep a history of every single panelist such as when they participated in a survey, etc.
We can provide clients with member’s latest data upon request.
Total panelists on Idiaoyan now are about 3,710,000.
Since our active users are normal publics, they can represent general consumer well.
In the past one year, the attrition rate of panelindex is 39%; the calculation method is as following:
Attrition rate=lost member in past one year/total number of panelindex*100%
Definition for lost member: Don’t have mutual communication with us in the past one year. For example: neither enter our website nor click survey link in the past one year.
1. Sampling Process
2. Survey Invitation
We have unique link to avoid the same member join in the same survey for many times. The process is as following:
A typical invitation mail is as following:
1)Unique URL to enter the questionnaire; 2) iDiaoYan web address; 3) survey information (Closed date, survey serial number, field work time, award); 4) member can choose not to join in survey; 5) email address that member supports; 6) privacy policy link.
through above methods, We are sure that only invited members can join in the survey once to avoid cheating.
3. Incentive System(s)
We have many incentive ways, among which points, prize and commission are used often. Only members who are qualified and answer the questionnaire carefully can get these awards.
We send award to members based on character, product’s penetration and the length of questionnaire etc. The hard to find panelist can get more prizes. We have clear explanation about the prize while inviting panelists.
4. Frequency of Survey Participation
We usually reserve the history record of member’s taking survey to control the frequency. They can attend survey reasonably and we try to avoid them join in survey overly. (Panelists who have recently participated in a study on the same subject can be removed from a new sample at the client's request)
5. Participation Rate
After sending invitation three days later, about 50% invitees will enter and click the link. Of all of them, about 35% are not qualified (finish survey via screen out question). 20% quit in the midway. And 30% are finished due to limited quota.
Therefore, excluding special survey, about 5% to 10% of invited members can finish the survey in 3 days. That’s why we ask partners provide 20 times links of the required objects.
6. Exclusion of Fake Samples
We adopt following measures:
7. What information do you provide to debrief your client after the project has finished?
After a research project closes, we send client with an email or a phone to confirm about the survey:
1. Policy
We protect the member’s privacy strictly and won’t reveal their personal information if not authorized by them.
We obey Chinese’s law and regulations to do online research.
We have ICP licence. We iDiaoYan panelindex comply all guide lines of ESOMAR and CMRA.
2. Data Protection/Security Measures
Only system administrator can visit user’s information. About the data related with privacy, members can choose to open or not.
What’s more, user’s password is encrypted by irreversible MD5. For the sensitive data that needs to be transferred between browser and server, it is encrypted by DES which further ensures the security of user’s data.
3. Quality Management System
Identify member who register several users in our system via IP.
Close member’s ID whose registered information is not in accordance with data and which has been warned for three times for cheating.
Remove those members who don’t have any mutual communication with us in the past one year.
Delete those who refuse or ignore to update personal information in the past two years.
4. Surveys with Children and Infants
For the panelist who is 15 or above, we directly choose from panelindex and don’t need other’s permission because they are in the allowable range.
To research children younger than 15 (If a client requests to interview a child), we should contact their parents first to get their permission and then make further research.