Table 1.
Selected Characteristics of 1,826 Block Faces in 4 US Cities Virtually Audited for Neighborhood Physical Disorder Using Google Street View Imagery Dating From 2007–2011
| Characteristic | Location |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| New York, NY (n = 532) |
Philadelphia, PA (n = 503) |
Detroit, MI (n = 502) |
San Jose, CA (n = 289) |
Overall (n = 1,826) |
||||||
| % | Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | Mean (SD) | |
| High-resolution camera | 66 | 42 | 67 | 88 | 64 | |||||
| Imagery recorded in 2009 or later | 67 | 42 | 98 | 93 | 73 | |||||
| Time elapsed between image capture and block face audit, years | 2.5 (1.7) | 3.7 (0.8) | 3.6 (0.4) | 1.8 (0.7) | 3.0 (1.3) | |||||
| No. of Street View vantage points on block face | 17.8 (11.6) | 15.3 (12.2) | 18.5 (9.8) | 20.6 (12.9) | 17.7 (11.6) | |||||
| Proportion of vantage points obstructed | 31 | 17 | 10 | 15 | 19 | |||||
| Distance from start of block face to end of block face, m | 190 (119) | 171 (136) | 204 (105) | 207 (129) | 192 (123) | |||||
| Prevalence of autosampled segments requiring manual adjustment | 11 | 4 | 9 | 8 | 8 | |||||
Abbreviations: CA, California; MI, Michigan; NY, New York; PA, Pennsylvania; SD, standard deviation.