Wave 10 Weighting

This technical paper outlines how Wave 10 weights were developed for the Longitudinal Study of Australian Children (LSAC). It explains why weighting is essential for producing reliable population estimates in a long‑running longitudinal study, where participant attrition and shifting sample characteristics can introduce bias over time. 

The report describes updates to the weighting approach, including model‑based imputation for missing data, refined response propensity modelling, and improved methods for adjusting weights to maintain representativeness. It also summarises how cross‑sectional and longitudinal weights are constructed for the two LSAC cohorts and provides guidance on using these weights—individually and in pooled analyses—to support accurate inference about Australian children’s development and wellbeing.