University of Tokyo

Survey Number 0595
Survey Title Questionnaire on Cell Phones and Personal Computers, 2005
Depositor Ipsos JSR Co., Ltd.
Restriction of Use For detailed information, please refer to 'For Data Users' at SSJDA website.

- Apply to SSJDA. Depositor's approval required.
Educational Purpose Only available for research.
Period of Data Use Permission One year
Access to Datasets Download
SSJDA Data Analysis Not available
Summary With the spread of cell phones in recent years, the number of households without landline phones has increased. This has been to the detriment of the traditional telephone survey environment and has raised concerns of increasing coverage errors in landline phone surveys.

On the other hand, cell phones with web browsing functions have become widespread, and Internet surveys are becoming increasingly common. Thus, use of cell phones as a survey tool is becoming increasingly important and is expected to increase contact opportunities and eliminate restrictions on survey locations and response time. Therefore, it is desirable to establish cell phone-based Internet survey environments.

The purpose of this survey is to learn the actual situation of cell phone and personal computer use in different survey methods.

Specifically, a survey was conducted of the same content using the four survey methods below to confirm the presence of any disparities.
<Conventional survey methods> <Cell phone-based survey methods>
Landline phones  vs. Cell phones
PC internet vs. Cell phone internet
Data Type quantitative research
quantitative research: micro data
Universe Ordinary men and women aged 16 to 64 years
Unit of Observation Individual
Sample Size Sample size: 3,964, number of valid responses 2,334 (valid response rate 58.9%)

*Breakdown by survey method:
Number of calls Number of valid responses
PC web 1,001 557
Cell phone web 1,001 536
Cell phones 981 583
Landline phones 981 658
Date of Collection 2005-09-16 ~ 2005-09-26
2005/09/16 – 09/26
Time Period 2005 ~ 2005
Spatial Unit saitama
The Greater Tokyo Area: Tokyo/Saitama/Chiba/Kanagawa
Hanshin Area: Osaka/Kyoto/Nara/Hyogo
Sampling Procedure Other
Random sampling according to survey method/gender/age done using “access panel” belonging to the Ipsos Japan statistical survey

*For cell and landline phones, owners were extracted grouping owners of both cell and landline phones by gender/age group.

*Cell phone web use and PC web use were extracted grouping gender/age group.
Mode of Data Collection Telephone interview
Self-administered questionnaire: Web-based (CAWI)
Internet and telephone

The same survey items were surveyed using the following four techniques.
 1) Telephone survey/cell phones
 2) Telephone survey/landline phones
 3) Web-based survey/cell phone web
 4) Web-based survey/PC web
Investigator Ipsos JSR Co., Ltd.
DOI 10.34500/SSJDA.0595
Sponsors (Funds)
Related Publications (by the Investigator) Please refer to the abstract in Japanese.
Related Publications (based on Secondary Analysis) List of related publications (based on Secondary Analysis)
Documentation [Questionnaire]
Major Survey Items (1) Actual cell phone use
Whether or not respondent has a cell phone, usage periods, name of the company and service, call frequency, e-mail frequency, web browsing frequency, flat-rate packet plan/discount system

(2) Actual personal computer (PC) use
Whether or not respondent has a PC, PC Internet use, specific purpose of PC use, PC e-mail frequency, PC web browsing frequency, number of registered Internet monitors (panels), Internet survey response frequency

(3) Face items
Gender, age, marital status, occupation, location at which respondent took the survey, evaluation of the format of questionnaire, evaluation of the time to complete the questionnaire
Date of Release 2009/06/30
Topics in CESSDA Click here for details

Information society
Topics in SSJDA Information/Communication/Mass Media
Version 1 : 2009-06-30
Notes for Users Variable and value labels are written in Japanese.