Table 6.

Linear regression between SF-36 PCS and UCLA SCTC GITI score adjusted for age, disease duration, sex, and ethnicity (n = 113).

	ß	Standard Error	95% CI for ß	p
Dependent variable = SF-36 MCS
UCLA SCTC GITI score	−6.94	2.27	−11.44; −2.44	0.0029
Age	−0.04	0.09	−0.21; −0.14	0.7006
Disease duration	0.08	0.10	−0.12; 0.28	0.4397
White ethnicity	2.34	2.97	−3.54; 8.23	0.4317
Women vs men R² adj = 0.04621	2.04	3.43	−4.75; 8.82	0.5536
Dependent variable = SF-36 PCS
UCLA SCTC GITI score	−7.31	2.43	−12.12; −2.49	< 0.001
Age	−0.13	0.10	−0.32; 0.06	0.0033
Disease duration	−0.09	0.11	−0.31; 0.13	0.1922
White ethnicity	2.36	3.18	−3.93; 8.65	0.4599
Women vs men R² adj = 0.04621	1.96	3.67	−5.29; 9.22	0.5932

SF-36: Medical Outcomes Study Short-Form 36 questionnaire; MCS: mental component summary; PCS: physical component summary; UCLA SCTC GITI: University of California at Los Angeles Scleroderma Clinical Trial Consortium GI Tract Instrument.