Experiment size is literally N=21, with 4 healthy participants, 3 in-situ breast cancers, and 14 invasive breast cancers.
N=21 might as well be useless in my opinion. You can't draw any meaningful conclusions about statistical power of this test; if your priors were 10% for breast cancer, after taking this test, your posterior probably remains unchanged.
Actual publication: https://pubs.aip.org/avs/jvb/article/42/2/023202/3262988/Hig...
Experiment size is literally N=21, with 4 healthy participants, 3 in-situ breast cancers, and 14 invasive breast cancers.
N=21 might as well be useless in my opinion. You can't draw any meaningful conclusions about statistical power of this test; if your priors were 10% for breast cancer, after taking this test, your posterior probably remains unchanged.