Survey sampling in wartime: addressing challenges for cross-national and longitudinal studies
Journal: Statistics in Transition New Series
Year: 2026

Conflict situations pose unique challenges before survey sample design, three of which are examined in this paper in the context of the ongoing full-scale war in Ukraine. Firstly, defining the population becomes a complex task as a result of substantial population changes. This includes internal displacement, a significant proportion of the population emigrating (but with a potential future return), and a considerable number of individuals actively engaged in combat who are currently unreachable