| Case Number | CASENUM | NUMERIC | - | Identity | | Scale |
| Student status | STUDENT | NUMERIC | - | | | Nominal |
| Employment status | EMPLOYED | NUMERIC | - | | | Nominal |
| Employment Type | EMPLOYMENT_TYPE | NUMERIC | - | | | Nominal |
| Non-employment Status | NON_EMPLOYMENT_STATUS | NUMERIC | - | | | Nominal |
| Internet usage | USENET | NUMERIC | - | | | Nominal |
| Most important reason not to use the Internet | NONUSE | NUMERIC | - | | | Nominal |
| Using the Internet at home | HOMEUSE | NUMERIC | - | | | Nominal |
| Using the Internet at work | WORKUSE | NUMERIC | - | | | Nominal |
| Using the Internet at school outside the home | SCHOOLUSE | NUMERIC | - | | | Nominal |
| Using the Internet from anywhere else | ANYWUSE | NUMERIC | - | | | Nominal |
| Using the Internet while on the move | MOBILEUSE | NUMERIC | - | | | Nominal |
| Using computer for Internet connection | COMPUNET | NUMERIC | - | | | Nominal |
| Using phone for Internet connection | PHONENET | NUMERIC | - | | | Nominal |
| Using tablet or e-reader for Internet connection | TABLETNET | NUMERIC | - | | | Nominal |
| Most often used device for Internet connection | MOSTOFTEN | NUMERIC | - | | | Nominal |
| Second most often used device for Internet connection | SECMOST | NUMERIC | - | | | Nominal |
| Years of Internet Use | EXPNET_DECIMAL_YEARS | NUMERIC | - | | | Nominal |
| Have received obscene or abusive e-mails in the past year | ABUSEMAIL | NUMERIC | - | | | Nominal |
| Have received a virus on your computer in the past year | COMPUVIRUS | NUMERIC | - | | | Nominal |
| Have bought something misrepresented on a website in the past year | MISREPRE | NUMERIC | - | | | Nominal |
| Have had your credit card details stolen via use on the Internet in the past year | CARDRTHEFT | NUMERIC | - | | | Nominal |
| Have been contacted by someone anline asking for bank or personal details in the past year | NETSCAM | NUMERIC | - | | | Nominal |
| Have accidentally arrived at a pornographic website in the past year | NETPORN | NUMERIC | - | | | Nominal |
| Have been bullied or harassed in the past year | NETBULLY | NUMERIC | - | | | Nominal |
| By using the Internet one can have more political power | INTPOL1 | NUMERIC | - | | | Nominal |
| By using the Internet one will have more say about what the governement does | INTPOL2 | NUMERIC | - | | | Nominal |
| By using the Internet one can better understand politics | INTPOL3 | NUMERIC | - | | | Nominal |
| By using the Internet public offficials will care more what people think | INTPOL4 | NUMERIC | - | | | Nominal |
| Reliability of the information on the Internet | INFOREL | NUMERIC | - | | | Nominal |
| Internet's importance as an information source | INFONET | NUMERIC | - | | | Nominal |
| Television's importance as an information source | INFOTV | NUMERIC | - | | | Nominal |
| Newspaper's importance as an information source | INFOPAPER | NUMERIC | - | | | Nominal |
| Radio's importance as an information source | INFORADIO | NUMERIC | - | | | Nominal |
| Interpersonal sources' importance as an information source | INFOPERSON | NUMERIC | - | | | Nominal |
| Internet's importance as an entertainment source | ENTNET | NUMERIC | - | | | Nominal |
| Television's importance as an entertainment source | ENTTV | NUMERIC | - | | | Nominal |
| Newspaper's importance as an entertainment source | ENTPAPER | NUMERIC | - | | | Nominal |
| Radio's importance as an entertainment source | ENTRADIO | NUMERIC | - | | | Nominal |
| Have you ever had your privacy violated online? | PRIVACY_ALL | NUMERIC | - | | | Nominal |
| There is no privacy | NOPRIVACY | NUMERIC | - | | | Nominal |
| Concerned governments violating my privacy online | GOVVIOLATE | NUMERIC | - | | | Nominal |
| Concerned corporations violating my privacy online | COMVIOLATE | NUMERIC | - | | | Nominal |
| Concerned other people violating my privacy online | PEVIOLATE | NUMERIC | - | | | Nominal |
| Actively protecting my privacy online | PROTECT | NUMERIC | - | | | Nominal |
| Concerns about privacy online exaggerated | EXAGGERATED | NUMERIC | - | | | Nominal |
| Have nothing to hide | NOHIDE | NUMERIC | - | | | Nominal |
| I can control my privacy online | CONTROL | NUMERIC | - | | | Nominal |
| Internet connection at home | HOMECONN | NUMERIC | - | | | Nominal |
| Frequency of checking e-mail | EMAIL | NUMERIC | - | | | Nominal |
| Frequency of instant messaging | INSTMES | NUMERIC | - | | | Nominal |
| Frequency of making or receiving phone calls over the Internet | NETPHONE | NUMERIC | - | | | Nominal |
| Frequency of posting messages or comments on discussion boards or forums | POSTMES | NUMERIC | - | | | Nominal |
| Frequency of posting messages or comments on social networking sites | SNSMES | NUMERIC | - | | | Nominal |
| Frequency of posting your own content | CONTENT | NUMERIC | - | | | Nominal |
| Frequency of re-posting or sharing links or content | REPOST | NUMERIC | - | | | Nominal |
| Frequency of looking for news | NEWS | NUMERIC | - | | | Nominal |
| Frequency of looking for travel information | TRAVEL | NUMERIC | - | | | Nominal |
| Frequency of looking for job or work | JOB | NUMERIC | - | | | Nominal |
| Frequency of reading blogs | READBLOG | NUMERIC | - | | | Nominal |
| Frequency of looking for humorous content | HUMOUR | NUMERIC | - | | | Nominal |
| Frequency of looking for health information | HEALTH | NUMERIC | - | | | Nominal |
| Frequency of playing gamesf | GAMES | NUMERIC | - | | | Nominal |
| Frequency of downloading/listening to music | MUSIC | NUMERIC | - | | | Nominal |
| Frequency of downloading/watching videos | VIDEO | NUMERIC | - | | | Nominal |
| Frequency of looking at religious or spiritaul sites | RELIGION | NUMERIC | - | | | Nominal |
| Frequency of listening to radio online | NETRADIO | NUMERIC | - | | | Nominal |
| Frequency of betting/gambling online | GAMBLE | NUMERIC | - | | | Nominal |
| Frequency of browsing the Web | BROWSE | NUMERIC | - | | | Nominal |
| Frequency of looking at sites with sexual content | SEXCONT | NUMERIC | - | | | Nominal |
| Frequency of visiting social networking sites | SNSITES | NUMERIC | - | | | Nominal |
| Frequency of getting information about a product | PROINFO | NUMERIC | - | | | Nominal |
| Frequency of buying things online | PURCHASE | NUMERIC | - | | | Nominal |
| Frequency of making travel reservations/bookings | TRAVELRES | NUMERIC | - | | | Nominal |
| Frequency of paying bills online | NETBILL | NUMERIC | - | | | Nominal |
| Frequency of using bank's online services | NETBANK | NUMERIC | - | | | Nominal |
| Frequency of investing in stocks/funds/bonds | NETINVEST | NUMERIC | - | | | Nominal |
| Frequency of comparing prices of products/services | COMPARE | NUMERIC | - | | | Nominal |
| Frequency of selling things online | NETSELL | NUMERIC | - | | | Nominal |
| Frequency of looking up a definition of a word | DEFLOOK | NUMERIC | - | | | Nominal |
| Frequency of finding/checking a fact | FACTCHECK | NUMERIC | - | | | Nominal |
| Frequency of getting information for school- related work | SCHWORK | NUMERIC | - | | | Nominal |
| Frequency of participating in distance learning for an academic degree or job training | DISLEARN | NUMERIC | - | | | Nominal |
| Feel comfortable saying whatever I think about politics | SAYTHINK | NUMERIC | - | | | Nominal |
| Safe to say whatever you think about politics on the Internet | SAFESAY | NUMERIC | - | | | Nominal |
| People should be free to criticize their government on the Internet | FREECRITIC | NUMERIC | - | | | Nominal |
| Okay for people to express extreme ideas on the Internet | NETPRESS | NUMERIC | - | | | Nominal |
| Government should regulate the Internet more | REGULATE | NUMERIC | - | | | Nominal |
| Worried about the government checking what I do online | GOVCHECK | NUMERIC | - | | | Nominal |
| Worried about companies checking what I do online | BIZCHECK | NUMERIC | - | | | Nominal |
| Respondent's gender | GENDER | NUMERIC | - | | | Nominal |
| Respondent's age | AGE | NUMERIC | - | | | Nominal |
| Highest level of schooling completed | EDUCATION | NUMERIC | - | | | Nominal |
| Monthly gross family/household income in Euros | INCOME | NUMERIC | - | | | Nominal |
| Marital Status | MARITAL | NUMERIC | - | | | Nominal |
| Number of people 18 or older living in the household | ADULT | NUMERIC | - | | | Nominal |
| Number of Children under 18 years old living in the household | CHILD | NUMERIC | - | | | Nominal |
| Community | SURVEY_COMMUNITY | NUMERIC | - | | | Nominal |
| Individual cross-sectional sample weight | WEIGHT | NUMERIC | - | Weight | | Scale |