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Power Analysis. These are estimates of sample sizes needed to distinguish a difference of certain magnitudes in each of four measures at day 28 after stroke. Power analysis used 5% alpha, 50% beta and the standard deviation and mean of day 28 data normalized to baseline.
| Effect Size | Approximate Sample Size (# of Mice) | |||
|---|---|---|---|---|
|
| ||||
| Success Rate | Highest Force in Trial |
Latency to Success |
Latency to Pull | |
| 50% | 9 | 2 | 3 | 3 |
|
| ||||
| 40% | 15 | 3 | 5 | 5 |
|
| ||||
| 30% | 26 | 5 | 8 | 8 |
|
| ||||
| 20% | 59 | 12 | 18 | 18 |
|
| ||||
| 10% | 236 | 48 | 72 | 72 |
