Table 1.
Number of participants within the 14 different strata's divided into the two groups.
| TRAINING GROUP | CONTROL GROUP | |||||
|---|---|---|---|---|---|---|
| Stratum | Participants (N) | Clusters (N) | Cluster size (range) | Participants (N) | Clusters (N) | Cluster size (range) |
| A | 44 | 7 | 3-12 | 58 | 8 | 1-15 |
| B | 24 | 3 | 1-12 | 27 | 3 | 8-11 |
| C | 12 | 3 | 1-8 | 10 | 1 | 10 |
| D | 5 | 1 | 5 | 7 | 1 | 7 |
| E | 6 | 1 | 6 | 4 | 1 | 4 |
| F | 9 | 2 | 3-6 | 10 | 2 | 3-7 |
| G | 36 | 3 | 1-27 | 28 | 3 | 5-12 |
| H | . | . | . | 4 | 1 | 4 |
| I | 60 | 3 | 2-37 | 19 | 2 | 9-10 |
| J | . | . | . | 33 | 1 | 33 |
| K | 23 | 1 | 23 | . | . | . |
| L | 24 | 1 | 24 | 40 | 1 | 40 |
| M | 34 | 4 | 4-11 | 13 | 2 | 3-10 |
| N | 5 | 1 | 5 | 2 | 1 | 2 |
| Total | 282 | 30 | 255 | 27 | ||
The number of clusters and the range of the cluster size are specified for each stratum.