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Table 9 Minimum sample sizes as the function of difference (denoted by Δ) for the 5 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)
  1.138 1.157 1.172 1.190 1.202 1.203 1.214 1.219 1.224 1.227
Effect Size (Δ) Minimum Sample Size(n)
0.01 35063 36243 37157 38294 39129 39155 39914 40224 40548 40713
0.02 8766 9061 9289 9574 9782 9789 9979 10056 10137 10178
0.03 3896 4027 4129 4255 4348 4351 4435 4469 4505 4524
0.04 2191 2265 2322 2393 2446 2447 2495 2514 2534 2545
0.05 1403 1450 1486 1532 1565 1566 1597 1609 1622 1629
0.1 351 362 372 383 391 392 399 402 405 407
0.15 156 161 165 170 174 174 177 179 180 181
0.2 88 91 93 96 98 98 100 101 101 102
0.25 56 58 59 61 63 63 64 64 65 65
0.3 39 40 41 43 43 44 44 45 45 45
0.35 29 30 30 31 32 32 33 33 33 33
0.4 22 23 23 24 24 24 25 25 25 25
0.45 17 18 18 19 19 19 20 20 20 20
0.5 14 14 15 15 16 16 16 16 16 16