You'd be amazed by how many medical studies uses such small sample sizes. Often its for a good reason for instance when looking at the effectiveness of a surgi

You'd be amazed by how many medical studies uses such small sample sizes. Often its for a good reason for instance when looking at the effectiveness of a surgical procedure in a sub-group or the treatment for a reasonably rare condition. Sometimes it is because of the need to use a random or carefully selected bias group. But, as a one-time criminologist's statistician used to samples in 1000s (or 100s at least), I have often concluded that it was just bad science.