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Table 2 Estimated numbers of required subjects for 2, 3, 4 and 5 observations with ICC = 0.2

From: Sample size determination for mediation analysis of longitudinal data

Observations
  2 3 4 5
Effect size Sobel Product Bootstrap Sobel Product Bootstrap Sobel Product Bootstrap Sobel Product Bootstrap
SS 408 330 341 291 244 234 239 204 201 201 169 175
SH 301 282 283 231 226 230 201 185 190 177 163 160
SM 294 287 279 226 220 218 191 188 185 163 166 170
SL 282 267 278 223 213 211 188 182 182 166 163 164
HS 240 206 224 166 137 139 129 107 107 108 89 84
HH 120 97 104 87 72 79 71 59 58 61 53 60
HM 95 87 90 74 65 68 61 56 60 56 49 52
HL 88 85 85 72 65 70 61 57 54 51 49 48
MS 213 194 202 148 138 141 112 102 111 90 81 85
MH 81 68 73 59 49 53 47 39 37 39 32 30
MM 56 46 50 40 33 33 34 27 28 28 25 23
ML 47 38 37 32 31 28 29 27 23 25 24 24
LS 215 189 204 136 136 140 105 103 108 85 82 85
LH 66 60 65 45 39 40 36 32 34 30 26 28
LM 38 32 33 27 24 24 21 18 18 19 16 14
LL 25 22 22 19 17 15 16 14 12 14 12 13
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