Predictors of subtype change. Table shows factors significantly influencing subtype transition between first and last follow-up.
| Candidate predictor | Influence | P value |
| Baseline NSST probability | Higher baseline probability score is associated with less transition | p=0.0002 |
| Complement component C4 | Higher C4 is associated with less transition | p=0.003 |
| Chronic Conditions Index (CCI) | Higher CCI is associated with less transition | p=0.01 |
| Antidepressant usage | Antidepressant usage is associated with less transition | p=0.02 |
| Follow-up interval | Longer follow-up is associated with transition | p=0.03 |
CCI, Chronic Conditions Indicator; NSST, Newcastle Sjogren’s Stratification Tool.