Skip to main content

Table 2 Greenness exposure among 617 participants, as measured by NDVI, by time window and buffer radius

From: Residential greenness, asthma, and lung function among children at high risk of allergic sensitization: a prospective cohort study

Time Window

NDVI

Buffer

Distance

Mean (SD)

Range

Birth

200 m

0.51 (0.11)

0.10–0.77

400 m

0.53 (0.10)

0.13–0.78

800 m

0.54 (0.10)

0.15–0.74

Age 7

200 m

0.55 (0.09)

0.07–0.75

400 m

0.58 (0.09)

0.13–0.77

800 m

0.58 (0.09)

0.16–0.75

Across Childhood

200 m

0.53 (0.08)

0.18–0.72

400 m

0.55 (0.08)

0.18–0.75

800 m

0.56 (0.08)

0.17–0.74

  1. Abbreviations: m Meter, NDVI Normalized Difference Vegetation Index, SD Standard Deviation