Sichu Lu([email protected]) Genomics VC Sasha Gusev mohamed_ali Nalits Danny Dan Aronstein Charles Murray 0.777 is the correlation between the sum of the z-scores of the 11 ukbb tests at time 1 and time 2. The correlation of the PCA scores is 0.8. I'm too lazy to open R and do a CFA, but it's obvious that the reliability is >0.8