Table 2.
Clinical characteristics of the primary Sjögren's syndrome (pSS) patients S1 and S2 subgroups
| S1 | S2 | ||
|---|---|---|---|
| Number (female) | 6 (6) | 6 (6) | |
| Age | 37·5 ± 8·7 | 51·33 ± 13·5 | P = 0·082 |
| Volume of saliva (ml/15 min) | 1·35 ± 1·34 | 0·95 ± 0·45 | n.s. |
| Disease duration | 7·3 ± 7·0 | 5·0 ± 5·6 | n.s. |
| Oral dryness | 5/6 | 6/6 | n.s. |
| Ocular dryness | 4/6 | 5/6 | n.s. |
| Anti SS-A/Ro antibody positivity | 6/6 | 6/6 | n.s. |
| Anti SS-B/La antibody positivity | 1/6 | 1/6 | n.s. |
| ANA positivity | 5/6 | 6/6 | n.s. |
| RF positivity | 0/4 | 2/5 | n.s. |
| Hypergammaglobulinaemia | 2/6 | 4/6 | n.s. |
| Greenspan's focus score > 3 | 1/3 | 1/2 | n.s. |
| Major salivary gland glanditis | 0/6 | 4/6 | P = 0·014 |
ANA = anti-nuclear antibody; RF = rheumatoid factor; n.s. = not significant.