A character scalar or vector listing deprivation measures
to return. These include the area deprivation index ("adi"
),
the gini coefficient ("gini"
), two versions of the neighborhood
deprivation index by Messer ("ndi_m"
) and Powell and Wiley
("ndi_pw"
), and four versions of the social vulnerability
index ("svi10"
, "svi14"
, "svi20"
, and "svi20s"
).