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.

Number of people in sample
Geocoding Type
Estimates
Power (%)






Mean Odds Ratio
95%CI


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

Mazumdar et al. International Journal of Health Geographics 2008 7:13   doi:10.1186/1476-072X-7-13