Predictive power of the antibodies to determine disease status, renal crisis, or age at disease onset in cohort by regression analysis.
| Autoantibody | Disease Subset | Renal Crisis | Age at Disease Onset, Yrs |
|---|---|---|---|
| ACA | < 0.0001 | NS | 0.0033 |
| Scl-70 | < 0.0001 | NS | 0.0394 |
| RNAP III | < 0.0001 | 0.0012 | 0.0003 |
| U3-RNP | < 0.0001 | NS | < 0.0001 |
| Th/To | 0.0002 | NS | NS |
| PM/Scl | NS | NS | NS |
| More than 1 | NS | NS | NS |
| Undefined | NS | NS | NS |
| ANA− | NS | NS | NS |
ACA: anticentromere antibodies; RNAP III: RNA polymerase III antibodies; ANA: antinuclear antibodies; NS: not significant.