This paper highlights the fact that CRVS systems can be used to enhance official population and demography exposure estimation that forms a key element of disaster-related statistics. This includes the combination of data from CRVS systems with complementary sources, such as population censuses and other sources of administrative data. Many countries in Asia and the Pacific are shifting towards more continuously updated official population and demography data via population registers, which depend directly on CRVS systems, with advantages of more timely and granulated exposure information for disaster response, recovery, preparedness and mitigation.
Also presented in this paper is a detailed clarification on the conceptual and measurement basis on evacuated, relocated, internally displaced and internationally displaced populations due to disasters. Registration of displaced individuals, including via mobile registration and emergency shelter registration, is understood to be a powerful source of data to be utilised to support the production of statistics for population displacement-related impacts.