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Table 1 Simulation results for cluster model A (one circular cluster, 10% of total area) with a mean survival time of 5

From: Optimizing the maximum reported cluster size in the spatial scan statistic for survival data

  % of cens   Maximum reported cluster size (MRCS) Default Setting
3% 4% 5% 6% 8% 10% 12% 15% 20% 25% 30% 35% 40% 45% 50% Overall
Circular window 10% Frequency 2 5 15 22 48 657 110 76 23 15 8 4 2 1 1   989
Sensitivity 0.013 0.333 0.600 0.576 0.635 0.972 0.944 0.983 0.978 0.978 0.979 1.000 1.000 1.000 1.000 0.934 0.928
PPV 0.500 1.000 0.931 0.957 0.885 0.989 0.814 0.670 0.503 0.428 0.322 0.286 0.235 0.222 0.188 0.909 0.903
30% Frequency 0 5 6 32 27 540 162 75 77 34 6 3 3 1 1   972
Sensitivity 0.367 0.389 0.563 0.599 0.957 0.937 0.960 0.961 0.995 1.000 1.000 1.000 1.000 1 0.923 0.906
PPV 0.950 0.911 0.974 0.783 0.968 0.812 0.700 0.524 0.430 0.339 0.271 0.234 0.214 0.188 0.852 0.845
50% Frequency 0 9 0 120 16 367 209 159 56 32 8 7 1 2 0   986
Sensitivity 0.333 - 0.504 0.490 0.972 0.896 0.984 0.946 0.969 1.000 1.000 1.000 0.917 - 0.886 0.875
PPV 1.000 - 0.991 0.716 0.977 0.774 0.711 0.479 0.419 0.327 0.301 0.231 0.165 - 0.830 0.824
70% Frequency 0 20 5 18 0 531 234 5 8 31 29 6 3 16 12   918
Sensitivity 0.333 0.333 0.500 - 0.970 0.828 0.667 0.979 0.844 0.994 1.000 0.889 0.969 0.986 0.902 0.831
PPV 1.000 1 0.986 - 0.997 0.708 0.500 0.522 0.349 0.319 0.269 0.219 0.208 0.191 0.841 0.837
Elliptical window 10% Frequency 1 4 9 17 74 430 241 124 46 22 5 5 4 1 2   985
Sensitivity 0.010 0.417 0.482 0.510 0.701 0.957 0.974 0.989 0.989 1.000 1.000 0.967 1.000 1.000 1.000 0.934 0.920
PPV 1.000 1 0.963 1.000 0.962 0.969 0.823 0.689 0.522 0.399 0.326 0.279 0.238 0.207 0.185 0.853 0.847
30% Frequency 0 3 1 28 118 248 247 179 85 43 12 3 2 0 2   971
Sensitivity 0.333 0.333 0.500 0.675 0.940 0.942 0.990 0.973 0.996 0.986 1.000 0.917 - 1.000 0.908 0.886
PPV 1 1.000 0.988 0.968 0.949 0.799 0.690 0.538 0.411 0.331 0.287 0.220 - 0.164 0.794 0.788
50% Frequency 2 6 3 60 122 159 258 211 77 54 18 3 0 2 2   977
Sensitivity 0.027 0.389 0.556 0.500 0.669 0.957 0.913 0.982 0.957 0.988 0.982 1.000 - 1.000 1.000 0.883 0.865
PPV 1.000 1.000 0.933 0.992 0.986 0.955 0.791 0.696 0.522 0.411 0.321 0.288 - 0.182 0.185 0.781 0.779
70% Frequency 0 4 0 53 184 212 169 85 91 30 25 20 20 7 13   913
Sensitivity 0.333 - 0.500 0.688 0.970 0.871 0.794 0.839 0.861 0.853 1.000 0.942 0.976 0.987 0.829 0.758
PPV 1.000 - 1.000 0.987 0.986 0.770 0.535 0.460 0.340 0.275 0.280 0.227 0.207 0.182 0.762 0.761
  1. % of cens, percentage of censoring; PPV, positive predictive value
  2. Cells most often selected as the optimal MRCS are shown in italics