Table 2.
Unprocesseda and finalb geocoding match rates for 82,960 Non-PO Box addresses by selected characteristics, Southern Community Cohort Study, USA 2002–2009.
| Population density quartilesc, d |
|||||
|---|---|---|---|---|---|
| Overall | Q1 | Q2 | Q3 | Q4 | |
| Characteristic | Unprocessed (%) / Final (%) | ||||
| Total Population | 74.5 / 97.6 | 61.3 / 92.7 | 76.6 / 98.7 | 82.4 / 99.6 | 80.3 / 99.5 |
| State | |||||
| Alabama | 74.2 / 98.1 | 58.1 / 93.3 | 77.0 / 99.1 | 78.8 / 99.6 | 81.6 / 99.6 |
| Arkansas | 70.7 / 95.8 | 60.5 / 92.7 | 77.2 / 99.0 | 88.7 / 99.7 | 91.1 / 100.0 |
| Florida | 79.1 / 99.4 | 64.8 / 97.9 | 77.9 / 99.7 | 82.2 / 99.9 | 85.3 / 99.5 |
| Georgia | 75.7 / 98.7 | 59.8 / 90.5 | 82.2 / 99.6 | 81.4 / 99.7 | 74.4 / 99.3 |
| Kentucky | 82.9 / 99.1 | 61.9 / 94.3 | 78.6 / 98.9 | 84.7 / 99.7 | 85.9 / 99.5 |
| Louisiana | 81.5 / 99.1 | 70.4 / 97.7 | 78.7 / 99.5 | 91.8 / 99.7 | 94.4 / 100.0 |
| Mississippi | 70.5 / 96.7 | 66.6 / 95.4 | 77.9 / 99.0 | 84.5 / 99.6 | 85.3 / 100.0 |
| North Carolina | 85.8 / 99.6 | 76.9 / 98.6 | 86.2 / 100.0 | 87.8 / 99.7 | 88.6 / 99.7 |
| South Carolina | 67.0 / 97.3 | 52.9 / 94.5 | 73.3 / 99.3 | 78.5 / 99.2 | 83.1 / 98.5 |
| Tennessee | 80.1 / 99.6 | 74.1 / 97.8 | 81.7 / 99.5 | 83.0 / 99.8 | 78.5 / 99.6 |
| Virginia | 75.1 / 95.4 | 49.7 / 75.0 | 87.7 / 99.7 | 87.4 / 100.0 | 77.4 / 99.9 |
| West Virginia | 53.1 / 87.6 | 25.2 / 58.2 | 56.0 / 91.5 | 80.8 / 98.6 | 80.0 / 100.0 |
| Enrollment source | |||||
| CHC | 73.3 / 97.7 | 60.2 / 93.0 | 75.0 / 98.8 | 81.1 / 99.6 | 79.2 / 99.5 |
| General population | 82.2 / 97.1 | 67.5 / 91.1 | 83.3 / 98.2 | 90.9 / 100.0 | 92.1 / 100.0 |
| Sex | |||||
| Male | 73.1 / 97.5 | 59.4 / 92.2 | 75.3 / 98.5 | 80.8 / 99.5 | 77.2 / 99.3 |
| Female | 75.4 / 97.6 | 62.3 / 93.0 | 77.3 / 98.8 | 83.6 / 99.7 | 83.2 / 99.8 |
| Race | |||||
| African American | 75.3 / 98.3 | 62.7 / 94.8 | 77.9 / 99.2 | 82.2 / 99.6 | 78.8 / 99.5 |
| White | 72.9 / 96.0 | 59.6 / 89.6 | 75.0 / 97.9 | 83.2 / 99.6 | 85.5 / 99.5 |
| Other | 72.9 / 96.7 | 55.0 / 88.3 | 73.9 / 98.6 | 82.7 / 99.7 | 84.3 / 99.5 |
| Annual household income | |||||
| <US$ 15,000 | 73.8 / 97.7 | 60.5 / 93.0 | 76.3 / 98.7 | 81.0 / 99.6 | 78.9 / 99.5 |
| US$ 15,000–24,999 | 74.6 / 97.6 | 61.6 / 92.9 | 75.8 / 98.5 | 82.5 / 99.5 | 81.3 / 99.6 |
| US$ 25,000–49,999 | 76.1 / 97.5 | 62.5 / 92.7 | 78.3 / 98.7 | 85.5 / 99.9 | 83.1 / 99.4 |
| ≥US$ 50,000 | 77.8 / 97.2 | 63.7 / 90.4 | 77.7 / 98.9 | 87.2 / 99.8 | 88.2 / 99.5 |
| Education (years) | |||||
| <9 | 68.6 / 96.2 | 57.4 / 91.7 | 71.7 / 98.3 | 79.8 / 99.1 | 77.5 / 99.4 |
| 9–11 | 72.3 / 97.6 | 60.0 / 93.0 | 75.2 / 98.6 | 80.6 / 99.6 | 76.8 / 99.5 |
| 12–15 | 75.5 / 97.7 | 62.1 / 92.8 | 77.4 / 98.7 | 82.7 / 99.7 | 81.4 / 99.5 |
| ≥16 | 78.1 / 98.1 | 64.4 / 92.8 | 78.5 / 99.1 | 85.6 / 99.9 | 84.0 / 99.7 |
Abbreviations: CHC = Community Health Center; PO = Post Office.
Unparsed, uncleaned, and unstandardized addresses that geocoded correctly at the address level using only ArcMap.
Parsed, cleaned, and standardized addresses that geocoded at the address or street centroid level following the full procedures shown in Fig. 1. and Fig. 2.
Q1: <44 persons/km2, Q2: 44–236 persons/km2, Q3: 237–920 persons/km2, Q4: >920 persons/km2.
All final, two-sided Cochran-Armitage P values for trend across population density quartiles were <0.001 with the exception of Florida (Ptrend = 0.02) and North Carolina (Ptrend = 0.25).