[R] Help with npmc

[Paul Fenner]

I cant't seem to get npmc to make a comparison to a control level

>summary(npmc(brain), type="BF", control=1)
$`Data-structure`
  group.index class.level nobs
c           1           c   30
l           2           l   30
r           3           r   30

$`Results of the multiple Behrens-Fisher-Test`
  cmp    effect  lower.cl  upper.cl p.value.1s p.value.2s
1 1-2 0.6433333 0.4610459 0.8256208 0.08595894 0.14750647
2 1-3 0.4444444 0.2576352 0.6312537 0.99636221 0.75376639
3 2-3 0.3283333 0.1602449 0.4964218 1.00000000 0.04476692

What elementary error am I making.
Thanks,
Paul