Early Life Growth and the Development of Preschool Wheeze, Independent from Overweight - The LucKi Birth Cohort Study.pdf
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… trends in childhood overweight Tand obesity have been observed.2 An association between asthma and overweight in children has been found in several prospective studies.3 Proposed causal factors for this association include systemic inflammation, mechanical changes associated with high body weight, changes in airway hyperresponsiveness, decreased physical activity, and changes in diet,4 but the exact pathways through which overweight may lead to asthma are currently poorly understood.5 … age 4 years. Since July 2006, all parents of newborn children who live in the study region are invited to participate in LucKi starting at 1-2 weeks after birth. Parents are asked to complete questionnaires at base- line (1-2 weeks after birth) and when their child is aged 7 months, 14 months, and 3 years. The timing of the ques- tionnaires coincides with routine visits. Parents are also asked to provide signed informed consent for extracting additional data from the Child and Youth Health Care … wheezers and nonwheezers: B, �1.23; 95% CI, �2.15 to �0.31), attenuated by age 14 months (B,�0.51; 95% CI,�0.92 to�0.10), and had dis- appeared by age 3 years (B, 0.22; 95% CI, �0.26 to 0.70) (Figure 2). 346 Sensitivity Analyses To check for a nonlinear association between birth weight and the outcome variables wheeze and overweight, we added a centralized quadratic term for birth weight to the univari- able models. The quadratic term was not statistically signifi- cant in any model, and thus …