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A dynamic approach to population change in central cities and their suburbs, 1980-1990: crime, employment, and spatial proximity

American Journal of Economics and Sociology, The, April, 2005 by Joong-Hwan Oh

Appendix

Means and Standard Deviation for Selected Variables for Population
Change in Central Cities and Their Suburbs 1980-1990

                                            Central Cities

Variables                                  Mean       SD (3)

Change in white population, 1980-1990      6865.0     70671.4
White population, 1980                   258056.3    416506.1
Change in black population, 1980-1990    -61396.1    875496.9
Black population, 1980                   155509.5    966949.0
Violent crime, 1980                         774.0       585.6
Change in violent crime, 1980-1990          359.1       504.9
Employment, 1980                             56.4         5.4
Change in employment, 1980-1990               7.4         6.2
Total population (in 1,000s), 1980          381.5       689.7
Percent poor, 1980                           11.8         4.6
Percent single family, 1980                  19.4         5.3

                                                Suburbs

Variables                                  Mean         SD

Change in white population, 1980-1990     59352.9    156611.3
White population, 1980                   408234.0    526415.2
Change in black population, 1980-1990     11092.0     29338.0
Black population, 1980                    27459.6     55882.6
Violent crime, 1980                         369.9       264.8
Change in violent crime, 1980-1990           86.9       394.1
Employment, 1980                             58.6         7.7
Change in employment, 1980-1990               8.3         9.0
Total population (in 1,000s), 1980          465.9       608.2
Percent poor, 1980                            7.6         4.6
Percent single family, 1980                 100.5         2.4

(3) Denotes standard deviation.

Table 1

Coefficients from the Regression of Population Change in Central
Cities and Their Suburbs on Selected Independent Variables:
Semi-Difference Model, 1980 to 1990

                                    Population Change, 1980 to  1990

                                               Central Cities

                                            White              Black

Independent Variable                   b (1)       SE (2)        b

Semi-Difference Model
Central-city violent crime, 1980       15.0          12.3       4.4
Central-city employment, 1980        2357.5 ( )    1261.3       1.79
Central-city total population         -52.4 *         7.1      34.8 *
  (in 1,000s), 1980
Central-city percent poor, 1980      -423.5        1487.1     -82.1
Central-city percent single         -2962.7 ( )    1556.1    -879.9 ( )
  family, 1980
Suburban total population               --                       --
  (in 1,000s), 1980
Suburban percent poor, 1980             --                       --
Suburban percent single                 --                       --
  family, 1980
Suburban violent crime, 1980           65.0 *       21.2      -15.5 *
Suburban employment, 1980           -1183.7        762.9     -198.8
[R.sup.2]                               0.41                    0.64

                                     Population Change, 1980 to
                                              1990

                                    Central
                                    Cities             Suburbs

                                     Black             White

Independent Variable                  SE           b           SE

Semi-Difference Model
Central-city violent crime, 1980       4.0       55.4 ( )      31.2
Central-city employment, 1980        408.0     4993.0 ( )    2983.2
Central-city total population          2.3         --
  (in 1,000s), 1980
Central-city percent poor, 1980      481.1         --
Central-city percent single          503.4         --
  family, 1980
Suburban total population                        81.4 *        28.0
  (in 1,000s), 1980
Suburban percent poor, 1980                    -220.3        3709.5
Suburban percent single                       -7920.3        7501.8
  family, 1980
Suburban violent crime, 1980           6.9       -6.0          62.7
Suburban employment, 1980            246.8     -782.1        2443.3
[R.sup.2]                                         0.15

                                    Population Change,
                                      1980 to  1990

                                           Suburbs

                                            Black

Independent Variable                     b           SE

Semi-Difference Model
Central-city violent crime, 1980     14.3 *          4.7
Central-city employment, 1980       154.9          453.0
Central-city total population       --
  (in 1,000s), 1980
Central-city percent poor, 1980     --
Central-city percent single         --
  family, 1980
Suburban total population            22.1 *          4.3
  (in 1,000s), 1980
Suburban percent poor, 1980         368.3          563.2
Suburban percent single            -634.7         1139.1
  family, 1980
Suburban violent crime, 1980         15.3            9.5
Suburban employment, 1980           227.6          371.0
[R.sup.2]                             0.42

( ) p < 0.05 (one-tailed tests); * p < 0.05 (two-tailed tests).

(1) Denotes unstandarized coefficients.

(2) Denotes standard error.

Table 2

Coefficients from the Regression of Population Change in Central
Cities and Their Suburbs on Selected Independent Variables:
Mixed-Difference Model, 1980 to 1990

                                   Population Change, 1980 to 1990

                                             Central Cities

                                           White            Black

Independent Variable                  b           SE          b

Mixed-Difference Model
Central-city white                  0.07          0.10         --
  population, 1980
Central-city black                   --                      -.01
  population, 1980
Suburban white population,           --                       --
  1980
Suburban black population,           --                       --
  1980
Central-city violent crime,        23.7 ( )      13.0        7.8 *
  1980
Change in central-city              0.9          12.3        1.9
  violent crime, 1980 to 1990
Central-city employment,         2518.1 ( )    1332.3      315.5
  1980
Change in central-city           2567.8 *       829.8      727.8 *
  employment, 1980 to 1990
Central-city total population     -98.7          59.9       41.6
  (in 1,000s), 1980
Central-city percent poor,      -1230.6        1786.1       96.8
  1980
Central-city percent single     -2904.5 ( )    1751.6     -848.8 ( )
  family, 1980
Suburban total population            --           --          --
  (in 1,000s), 1980
Suburban percent poor, 1980          --           --          --
Suburban percent single              --           --          --
  family, 1980
Suburban violent crime, 1980       33.7          23.6        0.06
Change in suburban violent          7.9 *         2.8       -6.3 *
  crime, 1980 to 1990
Suburban employment, 1980       -1604.8 ( )     963.6     -343.7
Change in suburban               -826.1         689.1     -370.3 *
  employment, 1980 to 1990
[R.sup.2]                           0.53                     0.80

                                  Population
                                   Change,       Population Change,
                                 1980 to 1990      1980 to 1990

                                   Central
                                    Cities             Suburbs

                                    Black               White

Independent Variable                  SE            b          SE

Mixed-Difference Model
Central-city white                                  --         --
  population, 1980
Central-city black                    0.02          --         --
  population, 1980
Suburban white population,                          0.55 *      0.19
  1980
Suburban black population,                          --         --
  1980
Central-city violent crime,           3.5          71.1 *      18.5
  1980
Change in central-city                3.3          14.4        18.9
  violent crime, 1980 to 1990
Central-city employment,            363.7        4263.7 *    1944.8
  1980
Change in central-city              230.1        3904.1 *    1400.8
  employment, 1980 to 1990
Central-city total population         6.1           --         --
  (in 1,000s), 1980
Central-city percent poor,          483.9           --         --
  1980
Central-city percent single         509.3           --         --
  family, 1980
Suburban total population             --         -474.7 *     179.6
  (in 1,000s), 1980
Suburban percent poor, 1980           --         1162.4      2235.3
Suburban percent single               --        -6186.3      4814.5
  family, 1980
Suburban violent crime, 1980          6.4          31.7        37.7
Change in suburban violent            0.77         17.6 *       8.3
  crime, 1980 to 1990
Suburban employment, 1980           263.2         796.7      1777.0
Change in suburban                  186.1         918.8      1099.5
  employment, 1980 to 1990
[R.sup.2]                                           0.30

                                  Population Change,
                                    1980 to 1990

                                        Suburbs

                                         Black

Independent Variable                 b          SE

Mixed-Difference Model
Central-city white                  --          --
  population, 1980
Central-city black                  --          --
  population, 1980
Suburban white population,          --          --
  1980
Suburban black population,        459.0 *       52.7
  1980
Central-city violent crime,         7.2 ( )      4.1
  1980
Change in central-city              5.6          4.0
  violent crime, 1980 to 1990
Central-city employment,          278.8        405.1
  1980
Change in central-city            228.5        298.9
  employment, 1980 to 1990
Central-city total population       --          --
  (in 1,000s), 1980
Central-city percent poor,          --          --
  1980
Central-city percent single         --          --
  family, 1980
Suburban total population          -3.7          5.4
  (in 1,000s), 1980
Suburban percent poor, 1980        35.4        472.6
Suburban percent single         -1169.3       1012.6
  family, 1980
Suburban violent crime, 1980        2.9          7.9
Change in suburban violent         -1.9          1.3
  crime, 1980 to 1990
Suburban employment, 1980         640.0 ( )    375.2
Change in suburban                577.3 *      231.6
  employment, 1980 to 1990
[R.sup.2]                           0.70

( ) p < 0.05 (one-tailed tests); * p < 0.05 (two-tailed tests).

 

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