TY - T1 - A within-sibling pair analysis of lifestyle behaviours and BMI z-score in the multi-centre I.Family study SN - / UR - http://hdl.handle.net/10138/312885 T3 - A1 - I Family Consortium; Bogl, L. H.; Mehlig, K.; Intemann, T.; Masip, G.; Keski-Rahkonen, A.; Kaprio, J.; Hebestreit, A. A2 - PB - Y1 - 2019 LA - eng AB - Background and aims: By investigating differences in lifestyle behaviours and BMI in sibling pairs, family-level confounding is minimized and causal inference is improved, compared to cross-sectional studies of unrelated children. Thus, we aimed to investigate within-sibling pair differences in different lifestyle behaviours and differences in BMI z-scores in children and adolesents. Methods and results: We examined three groups of sibling pairs 1) all same-sex sibling pairs with maximum 4 years... VO - IS - SP - OP - KW - Overweight-discordant; Sibling pairs; Twin pairs; Body mass index; Energy intake; MVPA; BODY-MASS INDEX; ENERGY-INTAKE; PHYSICAL-ACTIVITY; EUROPEAN CHILDREN; DIETARY-INTAKE; OBESITY; ASSOCIATION; OVERWEIGHT; WEIGHT; RISK; 3121 General medicine, internal medicine and other clinical medicine; 3142 Public health care science, environmental and occupational health N1 - PP - ER -