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Variables Details
: (EM-878)
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EM Identity and Description
| EM-878 | |
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Document Author
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Branas, C. C., R. A. Cheney, J. M. MacDonald, V. W. Tam, T. D. Jackson, and T. R. Ten Havey |
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Document Year
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2011 |
Variable General Info
Race - Black residents (greened vacant lots) ?Comment:From Geolytics Incorporated (East Brunswick, New Jersey) and the US Census Bureau (Washington, DC), we obtained block group-level estimates of demographic variables for each year of the study. Race was defined as the number of black residents. Race at the block group level was partitioned among greened lot and control sites. |
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Variable ID
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20798 |
| Not reported | |
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Qualitative-Quantitative
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Quantitative (Cardinal Only) |
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Cardinal-Ordinal
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Cardinal |
| No. mi.^-2 |
Variable Typology
Race - Black residents (greened vacant lots) ?Comment:From Geolytics Incorporated (East Brunswick, New Jersey) and the US Census Bureau (Washington, DC), we obtained block group-level estimates of demographic variables for each year of the study. Race was defined as the number of black residents. Race at the block group level was partitioned among greened lot and control sites. |
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Predictor-Intermediate-Response
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Predictor |
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Predictor Variable Type
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Time- or Space-varying Variable |
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Response Variable Type
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Not applicable |
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Data Source/Type
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Map or database (e.g., wide coverage, wide availability, measured or modeled) |
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Variable Classification Hierarchy
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3. Human Demographic Data |
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--Race, ethnicity, or nationality |
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Variable Spatial Characteristics
Race - Black residents (greened vacant lots) ?Comment:From Geolytics Incorporated (East Brunswick, New Jersey) and the US Census Bureau (Washington, DC), we obtained block group-level estimates of demographic variables for each year of the study. Race was defined as the number of black residents. Race at the block group level was partitioned among greened lot and control sites. |
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Spatial Extent Area
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100-1000 km^2 |
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Spatially Distributed?
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Yes |
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Observations Spatially Patterned?
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Yes |
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Spatial Grain Type
variable.detail.spGrainTypeHelp
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other (specify), for irregular (e.g., stream reach, lake basin) |
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Spatial Grain Size
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Census block group |
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Spatial Density
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Not applicable |
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EnviroAtlas URL
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Percent Population other than White, Non-Hispanic |
Variable Temporal Characteristics
Race - Black residents (greened vacant lots) ?Comment:From Geolytics Incorporated (East Brunswick, New Jersey) and the US Census Bureau (Washington, DC), we obtained block group-level estimates of demographic variables for each year of the study. Race was defined as the number of black residents. Race at the block group level was partitioned among greened lot and control sites. |
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Temporal Extent
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1998-2008 |
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Temporally Distributed?
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Yes |
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Regular Temporal Grain?
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Yes |
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Temporal Grain Size Value
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1 |
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Temporal Grain Size Units
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year |
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Temporal Density
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Not applicable |
Variable Values
Race - Black residents (greened vacant lots) ?Comment:From Geolytics Incorporated (East Brunswick, New Jersey) and the US Census Bureau (Washington, DC), we obtained block group-level estimates of demographic variables for each year of the study. Race was defined as the number of black residents. Race at the block group level was partitioned among greened lot and control sites. |
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| Not reported | |
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Min Value
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Not reported |
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Max Value
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Not reported |
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Other Value Type
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Median |
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Other Value
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491.29 |
Variable Variability and Sensitivity
Race - Black residents (greened vacant lots) ?Comment:From Geolytics Incorporated (East Brunswick, New Jersey) and the US Census Bureau (Washington, DC), we obtained block group-level estimates of demographic variables for each year of the study. Race was defined as the number of black residents. Race at the block group level was partitioned among greened lot and control sites. |
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Variability Expression Given?
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No |
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Variability Metric
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None |
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Variability Value
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None |
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Variability Units
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None |
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Resampling Used?
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Not applicable |
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Variability Expression Used in Modeling?
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Not applicable |
Variable Operational Validation (Response Variables only)
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Variable ID
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Validated?
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Validation Approach (within, between, etc.)
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Validation Quality (Qual/Quant)
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Validation Method (Stat/Deviance)
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Validation Metric
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Validation Value
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Validation Units
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Use of Measured Response Data
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