Table 1.
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.