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. 2006 Oct 18;5:46. doi: 10.1186/1476-072X-5-46

Table 3.

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

μ = 1/1000 μ = 5/1000
ni+ θ ki ci+/ni+ M1(θ) M2(θ) θ ki 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

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.