research investigates the outcome of long-term unemployment among youth.
Surveys were carried out among representative samples of young unemployed
people in six countries. The samples were drawn from national unemployment
registers, and the respondents were young people between the ages of 18
and 24 who had been unemployed for a period of at least three months over
the previous six months. The surveys were initially based on postal questionnaires,
with additional telephone interviews carried out to minimise the bias caused
by a skewed response rate.
questionnaires were optically read for all the countries with the exception
of Denmark. Computer optical reading is a method that enables rapid and
reliable reading of the data. The percentage of errors (that is the difference
between optically read questionnaires and manually read questionnaires)
is under one per cent. The responses to all the open questions are registered
as files, which are readable in Windows settings in computers. Some of
the open questions were coded afterwards and manually registered into the
file. This applied especially to the coding of occupations. (Hammer, 1999,