The baseline investigation involves a postal questionnaire regarding socioeconomic position (SEP), health, health behaviors, material factors, psychosocial factors, youth circumstances and sociodemographics.

Information from the baseline postal survey onward has been linked to three main databases: the Cause-specific death registers from Statistics Netherlands; the National Medical Register including hospital admission information from all Dutch individuals; and the Regional Cancer Surveillance South.

Two subsamples (random sample and chronically ill sample) were invited to participated in additional in-depth interviews. They answered questions about socioeconomic position (SEP), SEP-related information, health, health behaviors, psychosocial factors, cultural factors, youth circumstances and sociodemographics that were not addressed in the postal survey.

Only the chronically ill subsample was interviewed in 1992.

The interview provided information about socioeconomic position, SEP-related information, health, health behaviors and sociodemographics.

Information from the survey has been linked to three main databases: the Cause-specific death registers from Statistics Netherlands; the National Medical Register including hospital admission information from all Dutch individuals; and the Regional Cancer Surveillance South.

Both subsamples were interviewed in 1993.

The interview provided information about socioeconomic position, SEP-related information, health, health behaviors (random sample only), material factors, psychosocial factors and sociodemographics.

Information from the survey has been linked to three main databases: the Cause-specific death registers from Statistics Netherlands; the National Medical Register including hospital admission information from all Dutch individuals; and the Regional Cancer Surveillance South.

Only the chronically ill subsample was interviewed in 1994.

The interview provided information about socioeconomic position, SEP-related information, health and sociodemographics.

Information from the survey has been linked to three main databases: the Cause-specific death registers from Statistics Netherlands; the National Medical Register including hospital admission information from all Dutch individuals; and the Regional Cancer Surveillance South.

Both subsamples were interviewed in 1995.

The interview provided information about socioeconomic position, SEP-related information, health and sociodemographics.

Information from the survey has been linked to three main databases: the Cause-specific death registers from Statistics Netherlands; the National Medical Register including hospital admission information from all Dutch individuals; and the Regional Cancer Surveillance South.

Both subsamples completed a postal survey and were interviewed.

The postal survey collected information about health, health behaviors, material factors and sociodemographics. The interview provided information about socioeconomic position, SEP-related information, health, health behaviors (random sample only), psychosocial factors, cultural factors, youth circumstances and sociodemographics (random sample only).

Information from the survey has been linked to three main databases: the Cause-specific death registers from Statistics Netherlands; the National Medical Register including hospital admission information from all Dutch individuals; and the Regional Cancer Surveillance South.

Both subsamples completed a postal survey

Two other samples were added to the study: first, new participants and secondly, a sample from the baseline investigation who still lived in Eindhoven in 2004.

The postal questionnaire provided information regarding socioeconomic position, SEP-related information, health, health behaviors, material factors, psychosocial factors, sociodemographics and the built environment.

Information from the survey has been linked to three main databases: the Cause-specific death registers from Statistics Netherlands; the National Medical Register including hospital admission information from all Dutch individuals; and the Regional Cancer Surveillance South.

In 2005, two new sub-samples, who were selected among respondents in the 2004 survey and were living in seven of the most deprived and seven of the most affluent neighborhoods of Eindhoven, were invited for an interview. This in-depth interview provided information about socioeconomic position, SEP-related information, health behaviors, material factors, psychosocial factors, cultural factors, youth circumstances, sociodemographics and the built environment.

Information from the survey has been linked to three main databases: the Cause-specific death registers from Statistics Netherlands; the National Medical Register including hospital admission information from all Dutch individuals; and the Regional Cancer Surveillance South.

All available respondents to the 2004 questionnaire were invited again to participate in a postal survey.

The postal questionnaire provided information about socioeconomic position, SEP-related information, material factors, psychosocial factors, cultural factors and sociodemographics.

Information from the survey has been linked to three main databases: the Cause-specific death registers from Statistics Netherlands; the National Medical Register including hospital admission information from all Dutch individuals; and the Regional Cancer Surveillance South.

A subsample of participants to the postal survey in 2011 were invited for an interview.

The interview provided information regarding health, health behaviors, psychosocial factors, cultural factors and youth circumstances.

Information from the survey has been linked to three main databases: the Cause-specific death registers from Statistics Netherlands; the National Medical Register including hospital admission information from all Dutch individuals; and the Regional Cancer Surveillance South.

All available respondents to the 2004 or 2011 questionnaires were invited again to participate in a postal survey. A new sample of residents from Eindhoven was also added to the study.

The postal questionnaire provided information about socioeconomic position, SEP-related information, health, health behaviors, oral health, material factors, psychosocial factors, cultural factors, sociodemographics and social network characteristics.

A subsample of participants to the postal survey in 2014 were invited for an interview.

The interview provided information regarding health, health behaviors, psychosocial factors, cultural factors, youth circumstances and social and cultural values.