Housing situation / contacts with neighbours / housing history / living together with somebody / data on parental family / detailed data on education: / occupational history / most important characteristics of job / relationships at work / financial situation / durables in the house / right to benefit from social welfare laws / opinion on social welfare / membership of organizations / physical health / illness / experience of being unmarried.Background variables: basic characteristics/ residence/ characteristics of parental family/household/ education/ religion/ organizational membership