Table 1. Sample allocation of Russian and German children 2000/2010.
| age | |||||||
| year/country/sex | 6 | 7 | 8 | 9 | 10 | Σ | |
| 2000 | Russian all | 69 | 267 | 279 | 276 | 132 | 1023 |
| Russian girls | 38 | 117 | 137 | 118 | 68 | 478 | |
| Russian boys | 31 | 150 | 142 | 158 | 64 | 545 | |
| German all | 407 | 333 | 386 | 487 | 490 | 2103 | |
| German girls | 177 | 175 | 209 | 248 | 241 | 1050 | |
| German boys | 230 | 158 | 177 | 239 | 249 | 1053 | |
| 2010 | Russian all | 3 | 93 | 68 | 59 | 45 | 268 |
| Russian girls | 0 | 44 | 33 | 21 | 18 | 116 | |
| Russian boys | 3 | 49 | 35 | 38 | 27 | 152 | |
| German all | 226 | 407 | 358 | 426 | 333 | 1750 | |
| German girls | 121 | 204 | 201 | 211 | 163 | 900 | |
| German boys | 105 | 203 | 157 | 215 | 170 | 850 | |