Table J.1.
| MS | Strata | Stratum capacity | Proportion | Cumulative proportion | Allocation proportion (πN.Epi.K) | Samples per quarter (XN.Epi.K) | Sample unit available (YN.Epi.K) | Samples takenc |
|---|---|---|---|---|---|---|---|---|
| Country X | P | 66,000,000 | 0.1346 | 0.1346 | 0.2075 | 10 | 12 | 12 |
| Country X | G | 65,000,000 | 0.1326 | 0.2672 | 0.2044 | 10 | 8 | 8 |
| Country X | M | 54,000,000 | 0.1101 | 0.3773 | 0.1698 | 8 | 7 | 7 |
| Country X | Q | 46,000,000 | 0.0938 | 0.4711 | 0.1447 | 7 | 9 | 9 |
| Country X | O | 46,000,000 | 0.0938 | 0.5649 | 0.1447 | 7 | 7 | 7 |
| Country X | D | 41,000,000 | 0.0836 | 0.6485 | 0.1289 | 6 | 5 | 5 |
| Country X | K | 39,000,000 | 0.0795 | 0.7280 | – | – | – | – |
| Country X | C | 27,000,000 | 0.0551 | 0.7831 | – | – | – | – |
| Country X | E | 24,000,000 | 0.0489 | 0.8320 | – | – | – | – |
| Country X | A | 22,000,000 | 0.0449 | 0.8769 | – | – | – | – |
| Country X | F | 19,000,000 | 0.0387 | 0.9156 | – | – | – | – |
| Country X | L | 16,000,000 | 0.0326 | 0.9482 | – | – | – | – |
| Country X | J | 13,000,000 | 0.0265 | 0.9747 | – | – | – | – |
| Country X | H | 12,000,000 | 0.0245 | 0.9992 | – | – | – | – |
| Country X | B | 259,000 | 0.0005 | 0.9997 | – | – | – | – |
| Country X | R | 30,000 | 0.0001 | 0.9998 | – | – | – | – |
| Country X | N | 28,000 | 0.0001 | 0.9999 | – | – | – | – |
| Country X | I | 25,000 | 0.0001 | 1 | – | – | – | – |
| Total: | 18 | 490,342,000 | 1 | – | 1 | 48 | 48 | 48 |
The calculation is based on the conventions that the Total number of samples/isolates to be sampled in a year equals 170 and the Number of samples/isolates to be sampled per quarter equals 43, without accounting for any bacteria prevalence nor considering potential missingness (missing data).
Colour legend:
Green Cells: Selected Stratum representing 60% of the total throughput, inhabitants or isolates collected in the Member State.
Yellow Cells: Stratum for which the available samples/isolates is smaller than the number of samples/isolates that should be sampled.
Orange Cells: Stratum for which the available samples/isolates is larger than the number of samples/isolates that should be sampled.
Final adjustments accounting for the prevalence of the bacteria and rate of recovery after storage are not addressed in this illustration.