Table 2.

Environmental indicators selected for analysis

WATER	Proportion of the census tract area covered by water collections (WATER CAT: ≥ 0–10; 10–100)
DENSEVEG	Proportion of the census tract area covered by dense vegetation (DENSEVEG CAT: ≥ 0–1; 1–10; 10–100)
UNDERGROWTH	Proportion of the census tract area covered by pasture and shrubs (UNDERGROWTH CAT: ≥ 0–10; 10–20; 20–100)
DENSEURB	Proportion of the census tract area characterized as residential with little vegetation (DENSEURB CAT: ≥ 0–10; 10–40; 40–80; 80–100)
GREENURB	Proportion of the census tract area characterized as sparse residential with much vegetation (GREENURB CAT: ≥ 0–10; 10–40; 40–90; 90–100)
EXPOSOIL	Proportion of the census tract area covered by bare soil – dirt, mud, sand (EXPOSOIL CAT: ≥ 0–1; 1–2; 2–4; 4–6; 6–10; 10–100)