Table 1: Demographics, WD and HAQ-DI Scores for the SSc vs RA Subjects

SSc RA OR 95% CI for OR p-Value
 N 61
35 lcSSc, 26 dcSSc		 104 - - -
 Work disabled (n) 55.7% (34) 34.6% (36) 2.38 1.24, 4.54 0.009
 Age 52.00 ± 1.18 51.90 ± 0.90 - - 0.95
 Female sex 85.2% 84.6% 1.05 0.43, 2.55 1.00
 Self-reported disease duration 11.02 ± 1.22 12.13 ± 0.92 0.43
 Less than high school education 16.4% 9.7% 1.82 0.71, 4.67 0.22
 HAQ-DI score 1.01 ± 0.09 0.86 ± 0.07 - - 0.18
 HAQ Pain score a 1.35 ± 0.10 1.16 ± 0.08 - - 0. 14
 Self-reported physically demanding work b 45.4% 59.6% 0.56 0.29, 1.11 0.12

P-values provided for dichotomous data were obtained using Fisher’s exact chi-squared tests. Proportions are provided for dichotomous data, and the ± SEM is provided for continuous measurements. Odds ratio (OR) are provided for SSc relative to RA.Continuous data were tested using independent t-tests assuming unequal variances.
a Datawere missing for 7 RA, 2 dcSSc, and 2 lcSSc subjects;
b Data were missing for 10 RA, 2 dcSSc, and 4 lcSSc subjects.