AIDS Treatment News logo      

October 6, 2009

Second Analysis of Vaccine Trial Casts Doubts on Result

"Now Cohen reports that a second analysis showed a trend toward benefit in those who were vaccinated, but failed to demonstrate a statistically significant difference. This means the difference was small enough that it could have occurred by chance."

Read more in POZ, October 6, 2009.

Comment: This finding weakens the positive vaccine result. But remember that the line between statistically significant, or not significant but only a trend, is an arbitrary one, depending on history and custom in medical research. Crossing this line does not cross any line in nature.