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Table 8 Minimum sample sizes as the function of difference (denoted by Δ) for the 4 baseline question SSC model

From: New non-randomised model to assess the prevalence of discriminating behaviour: a pilot study on mephedrone

  Prevalence Rate
  0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
  Standard Deviation (s)
  1.022 1.043 1.063 1.080 1.092 1.104 1.112 1.118 1.118 1.121
Effect Size (Δ) Minimum Sample Size (n)
0.01 28247 29421 30566 31563 32251 32975 33479 33799 33823 33993
0.02 7062 7355 7641 7891 8063 8244 8370 8450 8456 8498
0.03 3139 3269 3396 3507 3583 3664 3720 3755 3758 3777
0.04 1765 1839 1910 1973 2016 2061 2092 2112 2114 2125
0.05 1130 1177 1223 1263 1290 1319 1339 1352 1353 1360
0.1 282 294 306 316 323 330 335 338 338 340
0.15 126 131 136 140 143 147 149 150 150 151
0.2 71 74 76 79 81 82 84 84 85 85
0.25 45 47 49 51 52 53 54 54 54 54
0.3 31 33 34 35 36 37 37 38 38 38
0.35 23 24 25 26 26 27 27 28 28 28
0.4 18 18 19 20 20 21 21 21 21 21
0.45 14 15 15 16 16 16 17 17 17 17
0.5 11 12 12 13 13 13 13 14 14 14