Comparisons are Possible with Caveats (Residential Denominator Considerations)
Variable
Considerations
Physical
Dimension
Access to public transportation
The 2014 methodology used a selection of
residential address points to reflect the number of
residential units with access. The 2006
methodology used a selection based on residential
parcels to identify parcels with access.
Access to basic retail facilities
Access to park facilities
Proximity to noxious facilities
Comparisons are Possible with Caveats (Miscellaneous Considerations)
Variable
Considerations
Physical
Dimension
Sidewalk completeness score
2006 methodology used aerial imagery to
calculate length of roads surrounded by sidewalks
on at least one side and divided that number by
total number of street miles. 2014 methodology
calculated roads surrounded by sidewalks using
city-provided GIS data divided by number of
street miles.
Economic
Dimension
Percent Home Ownership
2006 methodology assumed that all residential
units were owner-occupied. 2014 methodology
used US Census data on homeownership rates at
the block group level.
Non-Analytical
Variables
Median house value
2006 data reflected average home value. The 2014
study used median home value data from the US
Census.
Percent of neighborhood that is
residential
2006 methodology divided residentially
developed or zoned properties in NSA by total
area of NSA. 2014 divided total area of residential
tax parcels in NSA by total area of NSA.
Youth population
2014 study analysis categorized children under
age 18 as “youth.” The 2006 study does not record
assumptions about the age of children categorized
as “youth.”
November 2014
A-18
