Table 6

Recovered odds ratios by TIGER geocoding with variable offsets and number of people in a sample. Estimates and power are based on 10,000 simulated samples.

Number of people in sample

TIGER geocoding with the following offsets in feet.

Estimates

Power (%)

Mean Odds Ratio

95%CI

316

0

1.18

0.50–1.82

19.0

200

1.18

0.50–1.84

19.6

400

1.22

0.50–1.91

21.4

600

1.20

0.50–1.84

21.7

800

1.23

0.49–1.91

22.4

474

0

1.19

0.69–1.66

24.3

200

1.19

0.68–1.67

26.3

400

1.24

0.68–1.74

28.9

600

1.22

0.69–1.68

28.3

800

1.24

0.68–1.74

28.8

632

0

1.20

0.78–1.56

30.2

200

1.20

0.79–1.58

33.1

400

1.24

0.79–1.66

35.9

600

1.22

0.80–1.60

35.6

800

1.25

0.79–1.65

36.2

790

0

1.20

0.86–1.51

35.5

200

1.20

0.86–1.52

38.7

400

1.25

0.86–1.60

41.7

600

1.23

0.87–1.55

41.2

800

1.25

0.86–1.60

42.7

948

0

1.20

0.90–1.48

40.1

200

1.21

0.90–1.49

44.0

400

1.25

0.92–1.56

47.5

600

1.23

0.92–1.51

46.9

800

1.25

0.92–1.56

48.1

1106

0

1.21

0.94–1.46

44.9

200

1.21

0.94–1.46

49.1

400

1.25

0.96–1.54

53.2

600

1.23

0.96–1.49

52.9

800

1.26

0.96–1.54

53.8

1264

0

1.20

0.95–1.43

49.7

200

1.21

0.96–1.44

53.4

400

1.25

0.97–1.51

57.3

600

1.23

0.97–1.47

56.6

800

1.25

0.98–1.51

58.0

1422

0

1.21

0.98–1.41

53.6

200

1.21

0.98–1.42

58.3

400

1.25

1.00–1.49

62.8

600

1.23

1.00–1.45

62.4

800

1.26

1.01–1.49

63.4

1581

0

1.21

1.00–1.40

57.5

200

1.21

1.00–1.41

62.1

400

1.25

1.02–1.48

66.1

600

1.24

1.02–1.44

65.9

800

1.26

1.03–1.48

67.5

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