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Power to detect a 20–30% reduction in asthma and recurrent wheeze for 660 patients in a multi-site study*
| Percent reduction in Asthma and/or Recurrent Wheeze in 4400 IU group |
|||
|---|---|---|---|
|
Mean Incidence of Asthma and/or Recurrent Wheeze in 400 IU group |
30% | 25% | 20% |
| 0.50 | 0.974 | 0.906 | 0.726 |
| 0.45 | 0.950 | 0.837 | 0.653 |
| 0.40 | 0.901 | 0.773 | 0.574 |
18% LTF and 8% miscarriage rate
