Table 2

Semiquantitative titres of ANA antibodies among NCA and TVD subjects.

The titre of ANA antibodies for each individual scored as ANA positive was determined by exposing twofold dilutions of serum to HEp-2000 cells, recording the lowest dilution at which both observers scored the slide as ANA positive as the titre. The number of subjects from each group for each titre is shown. The distribution of titres between the two groups is not significantly different (p=0.52; χ2 test).