2. Introducing ourselves
CentERdata, Research Institute
Tilburg University, the Netherlands
Survey Research
Maarten Streefkerk
Suzan Elshout IT
Edwin de Vet
Alerk Amin 2

3. CentERdata / LISS Funded by the Dutch science foundation (NWO)
CentERdata / LISS
Funded by the Dutch science foundation (NWO)
Providing a new research facility for social sciences
LISS panel + LISS data archive

4. LISS panel Online panel of 5000 households
LISS panel
Online panel of 5000 households
8000 individuals (>= 16 years)
Questionnaires each month, 30 min.
Incentive 15 euro an hour (average)
Representative for the Dutch population: age, sexe
At no cost for the researchers that do a proposal for a study/questionnaire.

5. Type of Questionnaires
Type of Questionnaires
1. The “household box”: Background Variables (on demand)
2. Core questionnaires: Health, Personality (longitudinal)
3. Assembled questionnaires: Proposed by external researchers
4. Panel & Data Quality

6. Current workflow 1/2 Design & Collection Paper version
Blaise (IS) version
Field work (one month) 6

7. Current workflow 2/2 Dissemination / archiving
SPSS (derived from bdb) + Codebook
Meta data (XML export of SPSS-file)
Import to archive
View the data online in a user friendly environment: LISS data archive 7

8. Questasy Web application based on DDI 3 Manages data & metadata
Questasy
Web application based on DDI 3
Manages data & metadata
Administrator Interface
Data entry without DDI knowledge
Live in January 2009
Researcher Interface
Browse/search metadata, download data
Live in March 2009
Questasy is a web application
Manages the metadata and data files, primarily for longitudinal panels
The admin interface went live in January 2009, and that’s when metadata entry started.
The researcher interface went live 2 months later for researchers to access the data/metadata
4/6/2019

9. New developments Since EDDI 10 - Utrecht Multi panel support
Theme support
Search Engine Optimization
Variable basket

10. Questasy Features Multiple panels Agency-wide application
Questasy Features
Multiple panels
Agency-wide application
Question bank (DDI ResourcePackages)
We started a new Immigrant panel, of 2400 individuals of non-dutch descent.
Many questions are shared between the panels, and we want this information readily available to researchers for comparative analysis.
4/6/2019

11. LISS panel Core Questionnaire: Wave 1 Wave 2 Single Wave Study:
Work & Schooling
Wave 1
Wave 2
Single Wave Study:
Higher Order Risk … 11

12. 12 Agency LISS panel Core Questionnaire A Single Wave Study A
Immigrant panel 12

13. Questasy Features Multiple panels Themes Change site layout and style
Questasy Features
Multiple panels
Themes
Change site layout and style
Override views and/or elements
I’ll show an example theme later in the presentation
4/6/2019

14. Questasy Features Multiple panels Themes Search engine optimization
Questasy Features
Multiple panels
Themes
Search engine optimization
Increased PageRank
Doubled traffic from search engines
Traffic from search engines went from about 15% to 22% of our traffic sources.
4/6/2019

15. Variable basket Creating custom variable extracts
Variable basket
Creating custom variable extracts
Integrated into Questasy interface
Data warehouse
Multiple “baskets” per user
Generating data sets on the fly
Download in several data formats
Custom codebooks on the fly
In both HTML as PDF (Docbook XML based)
LIVE DEMO
4/6/2019

16. Licensing Free License agreement available
Including source code
License agreement available
Available for non-profit scientific & government institutes
4/6/2019

17. CentERdata: www.centerdata.nl/en LISS panel www.lissdata.nl
Download data: 17