Table 2

Final logistic regression model for prediction of skin improvement at 1 year

Predictors	Estimate	SE	OR	p Value	95% CI
ANA positive	−0.378	0.339	0.685	0.266	0.352 to 1.334
Anti-Scl70 positive	−0.324	0.180	0.723	0.071	0.508 to 1.028
Tendon friction rubs	−0.492	0.214	0.612	0.022	0.402 to 0.930
Proteinuria	0.294	0.292	1.341	0.315	0.756 to 2.380
Lung fibrosis	0.112	0.179	1.119	0.530	0.787 to 1.590
Disease duration (months)	−0.001	0.001	0.999	0.287	0.997 to 1.001
Baseline mRSS	0.171	0.031	1.186	<0.001	1.115 to 1.262
Baseline mRSS²	−0.003	0.001	0.997	0.004	0.996 to 0.999
Intercept	−3.233	0.538	0.039	<0.001	0.014 to 0.113

ANA, antinuclear antibodies; Anti-Scl70 antibodies, antitopoisomerase I antibodies; mRSS, modified Rodnan skin score.