Table 5 Recovered odds ratios (true value is 1.2) by types of geocoding and number of people in a sample. Estimates and power are based on 10,000 simulated samples.
From: Geocoding accuracy and the recovery of relationships between environmental exposures and health
Number of people in sample | Geocoding Type | Estimates | Power (%) | |
|---|---|---|---|---|
| Â | Â | Mean Odds Ratio | 95%CI | Â |
316 | Orthophoto | 1.18 | 0.52–1.71 | 29.4 |
|  | E-911 | 1.17 | 0.53–1.65 | 31.1 |
|  | TIGER with 0 offset | 1.18 | 0.50–1.82 | 19.0 |
474 | Orthophoto | 1.19 | 0.75–1.56 | 43.4 |
|  | E-911 | 1.19 | 0.75–1.52 | 41.8 |
|  | TIGER with 0 offset | 1.19 | 0.69–1.66 | 24.3 |
632 | Orthophoto | 1.20 | 0.87–1.49 | 56.5 |
|  | E-911 | 1.20 | 0.87–1.45 | 51.8 |
|  | TIGER with 0 offset | 1.20 | 0.78–1.56 | 30.2 |
790 | Orthophoto | 1.20 | 0.95–1.44 | 66.1 |
|  | E-911 | 1.20 | 0.94–1.42 | 59.4 |
|  | TIGER with 0 offset | 1.20 | 0.86–1.51 | 35.5 |
948 | Orthophoto | 1.21 | 0.99–1.42 | 74.5 |
|  | E-911 | 1.21 | 0.98–1.39 | 66.4 |
|  | TIGER with 0 offset | 1.20 | 0.90–1.48 | 40.1 |
1106 | Orthophoto | 1.21 | 1.04–1.40 | 81.1 |
|  | E-911 | 1.21 | 1.02–1.38 | 73.3 |
|  | TIGER with 0 offset | 1.21 | 0.94–1.46 | 44.9 |
1264 | Orthophoto | 1.20 | 1.05–1.38 | 85.6 |
|  | E-911 | 1.21 | 1.04–1.36 | 78.3 |
|  | TIGER with 0 offset | 1.20 | 0.95–1.43 | 49.7 |
1422 | Orthophoto | 1.21 | 1.07–1.37 | 89.7 |
|  | E-911 | 1.21 | 1.06–1.35 | 83.5 |
|  | TIGER with 0 offset | 1.21 | 0.98–1.41 | 53.6 |
1581 | Orthophoto | 1.21 | 1.08–1.36 | 93.2 |
|  | E-911 | 1.21 | 1.08–1.35 | 87.0 |
|  | TIGER with 0 offset | 1.21 | 1.00–1.40 | 57.0 |