> scores=cbind(UNCA.score, A.score, B.score, U.m.A, U.m.B)

 > names(scores)=c('UNCA.scores', 'A.scores', 'B.scores','UNCA.minus.A', 'UNCA.minus.B')

 > names(scores)
 [1] "UNCA.scores"  "A.scores"     "B.scores"     "UNCA.minus.A" "UNCA.minus.B"

 > summary(UNCA.scores)
  X6.69230769230769
  Min.   : 4.154   
  1st Qu.: 7.333   
  Median : 8.308   
  Mean   : 8.451   
  3rd Qu.: 9.538   
  Max.   :12.000   

> is.numeric(UNCA.scores)
 [1] FALSE

> is.numeric(scores[,1])
 [1] TRUE

My question is, what is the difference between UNCA.scores and scores[,1]? UNCA.scores is the first column in the data.frame 'scores', but they are not the same thing, since one is numeric and the other isn't.

If UNCA.scores is just a label here how can I make it be equivalent to 'scores[,1]?

Thanks!