Variable Methodologies:
Comparisons between the 2006 and 2014 Approaches
Direct Comparison is Possible
Variable
Considerations
Social
Dimension
Percent of persons over age 64
Percent of persons ages 5-19
Infant wellness
Youth Opportunity Index
Crime
Dimension
Category A Victim Crime Index
Category A Non-Victim Crime Index
Category B Crime Index
Physical
Dimension
Percentage of Single Family Dwellings
Older than 50 Years
The 2014 study used 1963 as the cutoff year.
The 2006 study used 1956 as the cutoff year.
Percent code enforcement
Drainage score
Economic
Dimension
Percent residential addition
investments
The 2006 study referred to this variable as
“Percent Housing Reinvestment.”
Percent change in income
Non-Analytical
Variables
Population
Population growth
Median household income
Change in housing values
Percentage of residential apartment
units
Area (Acres)
Overlays
Comparisons are Possible with Caveats (Scale Considerations)
Variable
Considerations
Social
Dimension
Percent of households receiving
TANF
2014 study analysis was conducted at the zip code
scale due to privacy considerations. 2006 study
analysis was conducted at the NSA scale.
Percent of households receiving
SNAP
2014 study analysis was conducted at the zip code
scale due to privacy considerations. 2006 study
analysis was conducted at the NSA scale.
Percent of child welfare cases
2014 study analysis was conducted at the zip code
scale due to data availability. The 2006 study does
not record at what scale the analysis was
conducted.
Economic
Dimension
Percent of tax delinquent
residential parcels
2014 study analysis was conducted at the zip code
scale due to data availability. 2006 study analysis
was conducted at the NSA scale.
November 2014
A-17
