Childcare before age 6 and body mass index at age 7 years in a cohort of Danish children. Issue 5 (15th March 2017)

• Record Type: Journal Article
• Authors: Benjamin Neelon, S. E.; Schmidt Morgen, C.; Kamper‐Jørgensen, M.; Oken, E.; Gillman, M. W.; Gallis, J. A.; Sørensen, T. I. A.
• Is Part Of: Pediatric obesity. Volume 13:Issue 5(2018)
• Page Start: 307
• Page End: 311
• Publication Date: 2017-03-15
• Subjects: Childcare -- Danish National Birth Cohort -- Denmark -- Obesity; Obesity in children -- Periodicals; Obesity in adolescence -- Periodicals; Obesity -- Periodicals; Overweight children -- Periodicals; 618.92398
• DOI: 10.1111/ijpo.12206
• Languages: English
• ISSNs: 1747-7174

Abstract

Summary: Background: Previous studies show inconsistent associations between childcare and obesity. Aims: Our prior work demonstrated that childcare in infancy was associated with higher weight in a cohort of Danish children. Here, we extend this work and examine childcare through 6 years and body mass index (BMI) at age 7 years. Materials and Methods: We examined 24 714 children in the Danish National Birth Cohort who were also in the Childcare Database. We conducted multivariable linear regressions examining children prior to age 6, overall and by type (daycare, crèche, age‐integrated and kindergarten), and BMI z‐score at 7 years, stratifying on maternal socio‐occupational status. Results: A total of 19 760 (80.0%) children attended childcare before age 6. Childcare prior to age 6 was associated with BMI z‐score at 7 years (0.004 units per each additional 6 months of care; 95% CI: 0.001, 0.008; p = 0.01). Childcare in a kindergarten was the only type of care associated with BMI (0.009 units; 95% CI: 0.003, 0.02; p = 0.01). For children of higher socio‐occupational status mothers, childcare was associated with a 0.008 unit increase in BMI (95% CI: 0.004, 0.01; p > 0.001). Conclusions: Childcare was weakly associated with later BMI. This relationship was more pronounced in children from higher socio‐occupational status mothers and children in kindergarten care.