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I.   File Organization:

     The files in the Residential Housing Patterns directory contain 19 indexes of
     residential housing patterns for each race/ethnicity group and micropolitan area
     (as defined on June 6, 2003).  There is one record per race/ethnicity group 
     and micropolitan area.  There is one file for each year and each 
     race/ethnicity group and one file for each year with all groups combined. 
     All indexes were calculated using Non-Hispanic Whites as the reference group.  
     The unit of analysis is the census tract.  The number of race/ethnicity groups 
     and micropolitan areas are indicated below.

                         Number of             Number of
             Year   Race/Ethnicity Groups  Micropolitan Areas

             2000            6                    324

     Note: Residential Housing Pattern Indexes can only be shown for micropolitan
           areas with:

     . at least 10 Census tracts
     . a minority population of 100 or more for the group in question



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II.  File Names:

     2000 Files:

       The Unit of Analysis is the Census Tract

         rs2000ALL_micro.dat     ALL race/ethnicity groups
         rs2000aian_micro.dat    American Indian and Alaska Native 
         rs2000api_micro.dat     Asian and Pacific Islander
         rs2000asian_micro.dat   Asian
         rs2000nhopi_micro.dat   Native Hawaiian and Other Pacific Islander
         rs2000black_micro.dat   Black or African American
         rs2000hisp_micro.dat    Hispanic

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III. Record Layout

     Position       Variable

       1-  4        Year
       6- 10        Race/Ethnicity group
      12- 16        Core-Based Statistical Area (CBSA) code
      18- 61        Core-Based Statistical Area (CBSA) name
      63- 71        Micropolitan area total population
      73- 81        Micropolitan area minority population
      83- 89        Atkinson index with b=.1 (A1)
      91- 97        Atkinson index with b=.5 (A5)
      99-105        Atkinson index with b=.9 (A9)
     107-113        Absolute Centralization index (ACE)
     115-121        Absolute Clustering index (ACL)
     123-129        Absolute Concentration index (ACO)
     131-137        Correlation ratio or Eta squared (V)
     139-145        Dissimilarity index (D)
     147-153        Distance Decay Isolation index (DPxx*)
     155-161        Distance Decay Interaction index (DPxy*)
     163-169        Duncan's Delta index (DEL)
     171-177        Entropy index (H)
     179-185        Gini index (G)
     187-193        Interaction index (xPy*)
     195-201        Isolation index (xPx*)
     203-209        Relative Centralization index (RCE)
     211-217        Relative Clustering index (RCL)
     219-225        Relative Concentration index (RCO)
     227-233        Spatial Proximity index (SP)

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