Denise Silva is retired and voluntary Principal Researcher of the National School of Statistical Sciences (ENCE) from the Brazilian Institute of Geography and Statistics (IBGE) and Senior Associate Researcher at the Society for the Development of Scientific Research (SCIENCE). 

She completed her PhD in Statistics at the University of Southampton and has been working as a survey methodologist for more than 35 years as well as a lecturer at graduate and undergraduate levels. 

Caio Gonçalves is a Researcher at João Pinheiro Foundation, Regional Statistical Office of the state of Minas Gerais in Brazil. PhD Candidate in Population, Territory and Official Statistics at the National School of Statistical Sciences (ENCE) from the Brazilian Institute of Geography and Statistics (IBGE). 

His developing thesis is about producing labour force model-based figures with higher frequency and small domains using time series analysis for repeated surveys.