3 ms·
Assume the patients are assigned to the doctors in a way that's not affected by whether they have the condition or not (e.g. at random). If the screening questi
by euyyn 9y ago
Assume the patients are assigned to the doctors in a way that's not affected by whether they have the condition or not (e.g. at random). If the screening question doesn't lead to over-diagnosis, then you'd expect the same ratio of positives/negatives from both sets.
You need more subjects to attain the same statistical power, but the data is much easier to obtain. 100 subjects already sounded like overkill anyway.
- YawningAngel 9y agoIt doesn't strictly pertain to his hypothesis, but presumably you would like data on false positives and negatives as well as overall outcome percentages.
- euyyn 9y agoGranted. But to get that you need to jump many more hurdles (which are there for good reasons).