http://hdl.handle.net/10900/53294 2026-11-07T01:52:24Z http://hdl.handle.net/10900/47246 A comparison of the five Labour Force Surveys of the DACSEIS project from a sampling theory point of view Quatember, Andreas Labour market data are important for the assessment of the working of the national social and economic policies and as an indicator for social trouble spots. The European Union therefore pays very much attention in the harmonisation of the national Labour Force Surveys to be able to have comparable data of high quality. In this paper these surveys, that are included in the DACSEIS project (IST-2000-26057) are compared from a sampling theory point of view to show the similiarities as well as the differences of these surveys from this aspect. 2002-01-01T00:00:00Z http://hdl.handle.net/10900/47236 A method of weighting adjustment for survey data subject to nonignorable nonresponse Zhang, Li-Chun Weighting adjustment is a standard quasi-randomization approach for survey data subject to nonresponse Little (1986). The existing methods are typically based on the assumption that nonresponse is independent of the survey variable conditional to the auxiliary variables used to form the adjustment cells. In this paper we consider nonignorable nonresponse which is independent of certain auxiliary information conditional to the variable of interest. We estimate the size of the sample adjustment cells using a method of moment conditional to the sample. The method relies on only the nonresponse mechanism, and is independent of the sample design. In variance estimation, we evaluate the nonresponse effect on estimation and design, analogously to the concept of design effect. By comparing the nonresponse effects under a nonignorable model against those under an ignorable one, we obtain a means of measuring the effect of nonignorability. We motivate and illustrate our approach for estimation of household composition. 2002-01-01T00:00:00Z