Table 2.

Correlations between baseline parameters and fatigue measures among 160 SSc patients.

	Spearman’s Correlation Coefficients
Clinical Data	VAS Fatigue	SF36-Vitality	FACIT-Fatigue Scale
Age, years	0.202 *	−0.268 **	−0.233 **
Disease duration, years	0.167 *	−0.058	−0.016
Body Mass Index, kg/m2	0.072	−0.107	−0.146
Modified Rodnan Skin Score (only in dcSSc, n = 88)	−0.305 **	0.242 *	0.193
Disease Activity Score 28	0.523 **	−0.426 **	−0.503 **
Health Assessment Questionnaire Disability Index	0.571 **	−0.565 **	−0.679 **
Revised EUSTAR Activity Index	0.145	−0.113	−0.177 *
Cochin Hand Function Scale	0.573 **	−0.509 **	−0.640 **
Left Ventricular Ejection Fraction, %	−0.013	0.075	0.007
Left Ventricular Mass Index	0.309 **	−0.329 **	−0.365 **
Diastolic dysfunction, E-A Ratio	−0.181 *	0.197 *	0.220 **
Six-minute Walk Test, m	−0.394 **	0.439 **	0.444 **
Pinch strength, N	−0.355 **	0.322 **	0.455 **
Manual Muscle Testing-8	−0.391 **	0.420 **	0.458 **
Forced Vital Capacity, %	0.103	−0.051	−0.006
Diffusing Capacity for Carbon Monoxide. %	−0.099	0.115	0.104
UCLA SCTC Gastrointestinal test 2.0	0.387 **	−0.456 **	−0.495 **
Mini Mental State Examination	−0.262 **	0.234 **	0.201 *
VAS Raynaud’s	0.564 **	−0.429 **	−0.454 **
VAS Pain	0.707 **	−0.515 **	−0.577 **
Short Form 36-Physical Component Summary	−0.677 **	0.713 **	0.776 **
Short Form 36-Mental Component Summary	−0.647 **	0.885 **	0.807 **
FACIT- Emotional Well-being	−0.397 **	0.583 **	0.671 **

Assessed with Spearman’s rank correlations * p < 0.05; ** p < 0.01; VAS, Visual Analogue Scale; FACIT, The Functional Assessment of Chronic Illness Therapy; EUSTAR, European Scleroderma Trials and Research Group.