4 ms·
Not at all... He states merely that if someone has the option to have a control and chooses not to, you should be concerned. Specifically he hits on the fact th
by darkxanthos 12y ago
Not at all... He states merely that if someone has the option to have a control and chooses not to, you should be concerned. Specifically he hits on the fact that some fields can't have a control (sometimes just due to ethical reasons).
- cassowary37 12y agoI think the distinction is that we /often/ choose not to have a control, for a multitude of reasons, so as a cause for concern it's highly nonspecific. Much like the critique of small samples - there are underpowered 5000-patient multi center trials, and well-powered 30-patient trials. As I said, I think this is a nice introduction but can lead one to discount, well, anything other than large randomized placebo-controlled trials.