NATSEM research findings are generally based on estimated characteristics of the population. Such estimates are usually derived from the application of microsimulation models or other economic modelling techniques to microdata based on sample surveys.
These estimates may be different from the actual characteristics of the population because of sampling and nonsampling errors in the microdata and because of the assumptions underlying the modelling techniques.
The microdata do not contain any information that enables identification of the individuals or families to which they refer.