Pre-natal alcohol exposure (PAE) can lead to the development of fetal alcohol spectrum disorders (FASD). Individuals with FASD have a range of neurodevelopmental impairments including learning difficulties, social impairment and difficulties in regulating behaviours. This study aims to understand how different levels and types of maternal alcohol consumption impact the development of multiple risk behaviours at adolescence. Multiple risk behaviours (MRBs) are typically harmful behaviours such as alcohol consumption that tend to accumulate in adolescence and may have lasting impacts on the health and wellbeing of the individual. This project is a continuation of a Public Health Masters study (B3903), to apply statistical methods to evaluate and address the impact of missing data.