Summary of results B: Statistical tests for the effect of dose.
| z | P | |
|---|---|---|
| Pain-free at 1 hour | ||
| Sumatriptan 4 mg versus sumatriptan 6 mg | 2.560 | 0.011 |
| Headache relief at 1 hour | ||
| Sumatriptan 6 mg versus sumatriptan 8 mg | 2.818 | 0.005 |
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