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Table 1: Cooperation Rates by Neighborhood and RDD Samples (First Survey).
Completed Cooperation
Sample Interviews Refusals Rate
Total 1418 548 71.1
RDD 102 67 60.4
Listed Samples 1316 481 73.3
Neighborhood 1 100 36 73.5
Neighborhood 2 105 25 80.8
Neighborhood 3 98 31 76.0
Neighborhood 4 100 28 78.1
Neighborhood 5 100 25 80.0
Neighborhood 6 102 45 69.4
Neighborhood 7 100 51 66.7
Neighborhood 8 108 31 77.7
Neighborhood 9 106 54 66.3
Neighborhood 10 102 42 70.8
Neighborhood 11 99 43 69.7
Neighborhood 12 96 34 73.8
Neighborhood 13 100 36 73.5
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Table 2: The Impact of Presurvey Letters on Cooperation Rates
by Neighborhood
(Survey Two).
Presurvey Letter Not Sent Presurvey Letter Sent
NBHD Completed Cooperation Completed Cooperation
Interviews Refusals Rate Interviews Refusals Rate
Total 2339 1315 64.0 1498 552 73.1
E02 107 33 76.4
E01 106 37 74.1
E03 129 28 82.2
E04 103 41 71.5
E05 146 52 73.7
E06 164 60 73.2
W01 100 44 69.4
W02 156 69 69.3
W03 47 30 61.0 52 21 71.2
W04 50 18 73.5 63 17 78.8
W05 49 27 64.5 55 22 71.4
W06 9 2 81.8 140 62 69.3
E07 49 25 66.2 49 17 74.2
E08 79 42 65.3 69 31 60.0
W07 43 26 62.3 59 18 76.6
W08 101 79 56.1
W09 79 46 63.2
N07 105 49 68.2
N09 103 54 65.6
N08 150 88 63.0
N03 74 41 64.3
N04 73 30 70.9
N05 73 65 52.9
N06 77 26 74.8
N01 78 28 73.6
N02 75 32 70.1
N10 123 72 63.1
W10 82 32 71.9
S01 96 57 62.7
S02 113 54 67.7
S03 97 77 55.7
S04 69 48 59.0
S05 63 47 57.3
S06 101 57 63.9
S07 101 53 65.6
S08 86 51 62.8
S09 94 59 61.4
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Table 3: Comparison of Sample and Census Demographic Characteristics and
Cooperation Rates. (Survey percentages included only)
Cooperation Rate
% Male % White % % Owner No
% Under- % Over- Owner Over- Presurvey Presurvey
NBHD Male Sample White Sample Occupied Sample Letter Letter
Total 40.7 -7.4 84.0 5.7 74.5 17.6 67.4 73.4
Low Income - Minority
E07 32.7 -12.9 7.8 3.1 78.1 17.2 66.2 74.2
E08 29.1 -17.7 4.3 0.4 72.5 14.3 65.3 69.0
N02 45.3 -1.5 31.9 19.1 61.4 22.0 70.1
W06 37.6 -7.0 8.2 2.6 68.0 26.4 69.3
Low Income - Mixed Race
50 29.2 -16.3 82.5 10.6 70.2 16.2 66.3
E01 43.4 -4.3 84.2 12.0 71.2 14.4 74.1
N01 46.2 -4.2 63.4 36.0 39.0 18.4 73.6
W02 33.3 -14.1 57.0 14.2 75.5 20.7 69.3
W03 40.4 -7.3 63.3 1.3 60.4 8.7 61.0 71.2
W04 52.2 4.7 89.3 16.0 67.6 18.3 73.5 78.8
W09 44.3 -13.7 73.1 12.3 39.0 28.1 63.2
Total 41.3 -7.9 73.3 14.6 60.4 17.8 67.5 73.4
Low Income - White
F10 42.4 -6.9 97.9 1.4 85.6 21.2 73.5
F11 36.3 -12.1 96.9 -0.4 78.4 23.2 80.8
F20 43.4 -8.6 93.6 3.5 75.0 27.3 76.0
F21 35.0 -15.1 98.0 -0.8 81.8 27.5 78.1
F22 33.3 -16.7 98.9 -0.8 80.0 10.1 73.8
F23 44.4 -1.6 99.0 -0.4 74.7 5.8 73.5
F30 36.7 -19.7 94.6 6.8 76.3 26.7 80.0
F31 35.3 -13.2 91.8 -1.4 78.4 23.0 69.4
F40 35.4 -12.0 94.7 2.4 78.1 11.5 66.2
F41 49.1 1.1 98.1 2.3 86.0 13.2 77.7
F51 32.4 -15.0 92.9 7.6 84.3 17.4 70.8
F60 29.3 -17.3 97.8 3.0 75.8 28.1 69.7
E04 35.0 -11.5 92.9 6.4 77.2 15.3 71.5
E05 37.0 -11.6 93.0 9.5 78.0 34.3 73.7
S01 39.6 -9.3 98.9 0.0 83.9 6.2 62.7
S06 40.6 -9.0 96.8 0.5 67.7 12.3 63.9
S07 45.5 -1.5 98.8 4.8 74.0 14.7 65.6
S08 33.7 -15.2 98.7 2.2 63.9 14.0 62.8
S09 36.2 -11.2 91.6 3.0 69.2 6.7 61.4
W01 40.0 -11.0 95.5 -0.1 69.1 17.5 69.4
W08 37.6 -11.2 98.9 0.0 84.0 12.5 56.1
High Income - Mixed Race
E06 50.6 3.7 57.1 22.0 73.0 8.7 73.2
N03 36.5 -7.7 53.5 0.6 78.6 6.7 64.3
N04 54.8 6.9 90.4 25.9 83.6 11.7 70.9
N05 46.6 0.0 80.0 17.1 76.4 20.3 52.9
N10 41.5 -4.7 78.2 6.1 73.0 15.1 63.1
High Income - White
E02 44.9 -3.8 93.1 4.8 83.0 22.1 76.4
E03 40.3 -6.2 95.2 4.1 82.9 22.7 82.2
N06 49.4 3.0 98.6 1.8 78.7 13.7 74.8
N07 42.9 -5.2 95.0 1.1 73.1 13.3 68.2
N08 43.3 -2.7 98.6 6.2 71.3 25.2 63.0
N09 47.6 0.5 99.0 2.7 74.8 21.3 65.6
S02 52.2 2.4 100.0 0.5 92.0 3.7 67.7
S03 42.3 -4.1 98.9 4.2 84.0 28.9 55.7
S04 49.3 2.3 100.0 0.3 83.6 25.1 59.0
S05 34.9 -13.7 98.4 -1.3 79.0 5.1 57.3
W05 43.3 -3.7 99.0 4.0 76.0 20.8 64.5 71.4
W07 43.1 -4.1 96.0 1.2 63.7 16.3 62.3 76.6
W10 40.2 -8.1 87.0 5.6 72.8 25.6 71.9
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Table 4: Comparison of Sample and Census Demographic Characteristics and
Cooperation Rates by Neigborhood Type. (Survey percentages
included only)
Cooperation Rate
% Male % White % % Owner No
% Under- % Over- Owner Over- Presurvey Presurvey
NBHD Male Sample White Sample Occupied Sample Letter Letter
Total 40.7 -7.4 84.0 5.7 74.5 17.6 67.4 73.4
Low Income
Minority 36.2 -9.8 13.1 6.3 70.0 20.0 67.2 70.8
Mixed 41.3 -7.9 73.3 14.6 60.4 17.8 67.5 73.4
White 38.0 -10.9 96.2 2.4 77.2 17.5 70.1 71.5
High Income
Mixed 46.0 -0.4 71.8 14.3 76.9 12.5 62.8 73.2
White 44.1 -3.3 96.8 2.7 78.1 18.8 64.5 76.7
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Table 5: Comparison of Sample and Census Demographic Characteristics and
Cooperation Rates. (Survey percentages weighted by number
of household adults)
Cooperation Rate
% Male % White % % Owner No
% Under- % Over- Owner Over- Presurvey Presurvey
NBHD Male Sample White Sample Occupied Sample Letter Letter
Total 44.1 -3.7 75.0 1.6 76.3 20.3 64.5 73.4
Low Income - Minority
E07 35.9 -9.7 6.3 1.6 80.5 19.6 66.2 74.2
E08 31.1 -15.7 2.3 -1.6 74.4 16.2 65.3 69.0
N02 45.2 -1.6 27.2 14.3 64.3 24.9 70.1
W06 44.3 -0.3 7.3 1.7 73.4 31.8 69.3
Low Income - Mixed Races
E01 46.8 -0.9 79.6 7.3 72.7 15.9 74.1
N01 44.7 -5.7 53.4 26.0 45.1 24.5 73.6
W02 33.0 -14.4 48.6 5.8 75.6 20.7 69.3
W03 45.3 -2.4 59.1 -2.9 66.9 15.2 61.0 71.2
W04 50.5 3.0 82.9 9.6 66.2 16.9 73.5 78.8
W09 50.4 -7.6 68.0 7.2 42.9 32.0 63.2
Low Income - White
E04 36.3 -10.2 91.1 4.6 80.0 18.1 71.5
E05 38.9 -9.7 82.8 -0.7 78.9 35.1 73.7
S01 39.6 -9.3 91.8 -7.1 83.2 5.4 62.7
S06 42.2 -7.4 91.3 -5.0 69.6 14.2 63.9
S07 44.8 -2.2 83.8 -10.2 75.8 16.5 65.6
S08 36.2 -12.7 90.4 -6.1 66.7 16.8 62.8
S09 34.6 -12.8 75.3 -13.3 78.7 16.2 61.4
W01 39.6 -11.5 86.8 -8.8 73.0 21.4 69.4
W08 42.7 -6.1 92.7 -6.2 86.1 14.6 56.1
High Income - Mixed Races
E06 53.7 6.8 55.3 20.2 76.4 12.1 73.2
N03 40.0 -4.2 57.8 4.9 82.3 10.4 64.3
N04 51.0 3.1 85.4 20.9 86.5 14.6 70.9
N05 50.0 3.4 77.3 14.4 78.8 22.7 52.9
N10 41.3 -4.9 75.3 3.2 78.4 20.5 63.1
High Income - White
E02 47.8 -0.9 89.1 0.8 86.6 25.7 76.4
E03 42.7 -3.8 90.9 -0.2 88.0 27.8 82.2
N06 48.8 2.4 94.6 -2.3 84.1 19.1 74.8
N07 56.6 8.5 91.5 -2.4 79.0 19.2 68.2
N08 45.8 -0.2 96.0 3.6 73.1 27.0 63.0
N09 50.0 2.9 90.4 -5.9 80.3 26.8 65.6
S02 52.7 2.9 97.3 -2.2 93.6 5.3 67.7
S03 45.9 -0.5 93.7 -1.0 87.5 32.4 55.7
S04 51.3 4.3 93.6 -6.1 88.0 29.5 59.0
S05 36.6 -12.0 95.1 -4.6 83.8 9.9 57.3
W05 46.3 -0.7 93.2 -1.8 80.4 25.2 64.5 71.4
W07 45.0 -2.2 94.1 -0.7 71.4 24.0 62.3 76.6
W10 43.4 -4.9 84.0 2.6 69.5 22.3 71.9
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Table 6: Comparison of Sample and Census Demographic Characteristics and
Cooperation Rates by Neighborhood Type. (Survey percentages weighted by
number of adults in the household)
Cooperation Rate:
% Male % White % % Owner No
% Under- % Over- Owner Over- Presurvey Presurvey
NBHD Male Sample White Sample Occupied Sample Letter Letter
Total 44.1 -3.7 75.0 0.9 76.7 20.3 64.5 73.4
Low Income:
Minority 39.1 -6.8 10.8 4.0 77.7 23.1 67.2 70.8
Mixed 45.1 -4.7 65.3 8.8 61.6 20.9 67.8 73.4
White 39.4 -9.1 87.3 -8.7 76.9 17.6 62.1 71.5
High Income;
Mixed 47.2 0.8 70.2 12.7 80.5 16.1 62.8 73.2
White 47.1 -0.3 92.6 -1.6 81.9 22.6 64.5 76.7
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Table 7: Multiple Regression for Cooperation Rate.
Multiple R 0.68
R Square 0.46
Adjusted R Sq 0.39
Standard Error 5.17
Observations 50
Coefficient Standard t Statistic P-value
Error
Intercept 45.24 19.25 2.35 0.02
%male 0.42 0.36 1.19 0.24
%white -0.01 0.03 -0.31 0.76
%ownerocc -0.01 0.07 -0.15 0.88
letter 9.13 2.09 4.36 0.00
1/2 letter -3.67 2.75 -1.34 0.19
police 2 0.02 2.40 0.01 0.99
Legend:
%male = percent male in each neighbhorhood in 1990 census
%white = white in each neighbhorhood in 1990 census
%ownerocc = percent owner occupied housing in each neighbhorhood
letter = letter sent to all of the neighborhood sample
1/2 letter = letter sent to one-half of the neighborhood sample
police 2 = second survey
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Table 8: Multiple Regression for Undersample of Percentage Male
Multiple R 0.64
R Square 0.40
Adjusted R Sq 0.30
Standard Error 5.57
Observations 50
Coefficient Standard t Statistic P-value
Error
Intercept -3.98 22.05 -0.18 0.86
%male -0.90 0.39 -2.31 0.03
%white 0.03 0.04 0.95 0.35
% ownerocc 0.04 0.07 0.53 0.60
letter -7.02 2.71 -2.59 0.01
1/2 letter 2.33 3.02 0.77 0.44
police 2 4.43 2.59 1.71 0.09
cooperation 0.51 0.16 3.12 0.00
Legend:
%male = percent male in each neighbhorhood in 1990 census
%white = white in each neighbhorhood in 1990 census
%ownerocc = percent owner occupied housing in each neighbhorhood
letter = letter sent to all of the neighborhood sample
1/2 letter = letter sent to one-half of the neighborhood sample
police 2 = second survey
cooperation = (completed interviews)/(completed interviews + refusals)
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Table 9: Multiple Regression for Oversample of Percentage White.
Multiple R 0.65
R Square 0.42
Adjusted R Squ 0.33
Standard Error 6.29
Observations 50
Coefficient Standard t Statistic P-value
Error
Intercept 1.44 24.88 0.06 0.95
%male 0.05 0.44 0.11 0.92
%white -0.13 0.04 -3.22 0.00
%ownerocc -0.14 0.08 -1.67 0.10
letter -3.15 3.06 -1.03 0.31
1/2 letter -4.49 3.41 -1.32 0.19
police 2 2.01 2.92 0.69 0.49
cooperation 0.30 0.19 1.62 0.11
Legend:
%male = percent male in each neighbhorhood in 1990 census
%white = white in each neighbhorhood in 1990 census
%ownerocc = percent owner occupied housing in each neighbhorhood
letter = letter sent to all of the neighborhood sample
1/2 letter = letter sent to one-half of the neighborhood sample
police 2 = second survey
cooperation = (completed interviews)/(completed interviews + refusals)
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Table 10: Multiple Regression of Oversample of Percentage of
Owner-Occupied Housing.
Multiple R 0.74
R Square 0.55
Adjusted R Sq 0.48
Standard Error 5.32
Observations 50
Coefficient Standard t Statistic P-value
Error
Intercept 54.85 21.03 2.61 0.01
%male -0.42 0.37 -1.12 0.27
%white 0.06 0.03 1.67 0.10
%ownerocc -0.45 0.07 -6.33 0.00
letter 3.75 2.58 1.45 0.15
1/2 letter -4.38 2.88 -1.52 0.14
police 2 -0.16 2.47 -0.06 0.95
cooperation 0.03 0.16 0.21 0.83
Legend:
%male = percent male in each neighbhorhood in 1990 census
%white = white in each neighbhorhood in 1990 census
%ownerocc = percent owner occupied housing in each neighbhorhood
letter = letter sent to all of the neighborhood sample
1/2 letter = letter sent to one-half of the neighborhood sample
police 2 = second survey
cooperation = (completed interviews/(completed interviews + refusals)