RT Journal Article T1 Change in clusters of lifestyle behaviours from childhood to adolescence: a longitudinal analysis A1 Peral Suárez, África A1 Sherar, Lauren B. A1 Alosaimi, Noura A1 Kingsnorth, Andrew P. A1 Pearson, Natalie AB This study aimed to identify changes in clusters of lifestyle behaviours (physical activity, screen time and diet) between the ages of 7 and 14 years, and to examine socio-demographic determinants of changes. Longitudinal analyses were performed on a sample of 9339 children from the UK Millennium Cohort Study (MCS) who had complete data on behaviours of interest at age 7 (wave 4) and 14 years (wave 6). Joint Correspondence Analysis (JCA) and k-means cluster analysis were used to identify clusters of lifestyle behaviours at both time waves. Multinomial logistic regressions were used to examine the associations between socio-economic variables and changes in cluster membership. Analyses were conducted separately for boys and girls. Clusters of behaviours at age 7 and 14 years were identified as healthy, mixed or unhealthy respectively. Compared to girls, a higher proportion of boys remained in the healthier cluster over time (19.1% vs. 13.1%) or became healthier (26.4% vs. 9.36%). A higher proportion of girls changed to an unhealthier cluster (57.2% vs. 33.9%). Indicators of lower socio-economic status, such as low family income, low parental education, and not living with both parents at age 7 were associated with unhealthier changes in cluster membership. Conclusion Lifestyle behaviours cluster in children and are susceptible to change over a 7-year period, with a high proportion of boys becoming healthier and a higher proportion of girls became unhealthier. Indicators of socio-economic status appear to be important in determining changes in clusters. What is Known: • Poor lifestyle behaviours (i.e. unhealthy dietary habits, low physical activity, and sedentary behaviours) tend to cluster in children and adolescents. What is New: • Lifestyle behaviours cluster in children and are susceptible to changes between childhood and adolescence. Changes occur differently in boys and girls. Indicators of low socio-economic status are associated with unhealthier changes in behavioural clusters. PB Springer SN 1432-1076 YR 2024 FD 2024-08-15 LK https://hdl.handle.net/20.500.14352/108270 UL https://hdl.handle.net/20.500.14352/108270 LA eng NO Peral-Suárez, Á., Sherar, L.B., Alosaimi, N. et al. Change in clusters of lifestyle behaviours from childhood to adolescence: a longitudinal analysis. Eur J Pediatr (2024). https://doi.org/10.1007/s00431-024-05729-7 DS Docta Complutense RD 6 abr 2025