This study sought to determine whether greenness and residential density were independently associated with 2-year changes in the BMI of 3831 children and youth aged 3–16 years who lived at the same address for 24 consecutive months and received well-child care from a US-based clinic network between 1996 and 2002. According to multiple linear regression analyses, those living in greener neighbourhoods had lower BMI z-scores in Year 2, regardless of residential density characteristics. Higher greenness was also associated with lower odds of BMI z-scores increasing over the 2-year study period (OR, 0.87).
