Skip to main content

Table 3 Power for the BN (M1(θ)) and Cl (M2(θ)) methods.

From: Identifying geographic areas with high disease rates: when do confidence intervals for rates and a disease cluster detection method agree?

 

μ = 1/1000

μ = 5/1000

n i+

θ

k i

ci+/ni+

M1(θ)

M2(θ)

θ

k i

ci+/ni+

M1(θ)

M2(θ)

5000

0.0012

8

0.00108

-

0.073

0.0060

38

0.00540

-

0.172

5000

0.0012

8

0.00120

-

0.060

0.0060

38

0.00600

-

0.148

5000

0.0012

8

0.00132

-

0.050

0.0060

38

0.00660

-

0.127

5000

0.0015

8

0.00135

-

0.172

0.0075

38

0.00675

-

0.575

5000

0.0015

8

0.00150

-

0.148

0.0075

38

0.00750

-

0.535

5000

0.0015

8

0.00165

0.475

0.127

0.0075

38

0.00825

0.489

0.498

5000

0.0020

8

0.00180

0.780

0.391

0.0100

38

0.00900

0.966

0.955

5000

0.0020

8

0.00200

0.780

0.353

0.0100

38

0.01000

0.966

0.944

5000

0.0020

8

0.00220

0.780

0.318

0.0100

38

0.01100

0.966

0.933

10000

0.0012

15

0.00108

-

0.100

0.0060

75

0.00540

-

0.286

10000

0.0012

15

0.00120

-

0.083

0.0060

75

0.00600

-

0.253

10000

0.0012

15

0.00132

-

0.070

0.0060

75

0.00660

-

0.224

10000

0.0015

15

0.00135

-

0.285

0.0075

75

0.00675

-

0.850

10000

0.0015

15

0.00150

0.534

0.252

0.0075

75

0.00750

0.515

0.826

10000

0.0015

15

0.00165

0.534

0.223

0.0075

75

0.00825

0.515

0.800

10000

0.0020

15

0.00180

0.895

0.648

0.0100

75

0.00900

0.996

0.999

10000

0.0020

15

0.00200

0.895

0.610

0.0100

75

0.01000

0.996

0.999

10000

0.0020

15

0.00220

0.895

0.573

0.0100

75

0.01100

0.996

0.999

50000

0.0012

75

0.00108

-

0.285

0.0060

375

0.00540

-

0.850

50000

0.0012

75

0.00120

-

0.252

0.0060

375

0.00600

-

0.825

50000

0.0012

75

0.00132

-

0.223

0.0060

375

0.00660

-

0.800

50000

0.0015

75

0.00135

-

0.848

0.0075

375

0.00675

-

1.000

50000

0.0015

75

0.00150

0.515

0.824

0.0075

375

0.00750

0.507

1.000

50000

0.0015

75

0.00165

0.515

0.798

0.0075

375

0.00825

0.507

1.000

50000

0.0020

75

0.00180

0.996

0.999

0.0100

375

0.00900

1.000

1.000

50000

0.0020

75

0.00200

0.996

0.999

0.0100

375

0.01000

1.000

1.000

50000

0.0020

75

0.00220

0.996

0.998

0.0100

375

0.01100

1.000

1.000

  1. The cell sample size (ni+), true cell proportion (θ), and observed cell proportion (ci+/ni+), when the overall proportion (μ) is 1/1000 or 5/1000 are reported. The dashes (-) indicate situations where the observed cases would not be at least as large as the cluster size and the cell may only be significant if combined with one or more neighbouring cells.