Table 3. Correlation between the EORTC-BR23 and FACT-B4 questionnaires and the LYMQOL-Arm questionnaire (construct validity).

	LYMQOL-Arm	LYMQOL-Arm	LYMQOL-Arm	LYMQOL-Arm	LYMQOL-Arm
	function	appearance	symptom	mood	overall
FACT-B4 physical	-0.440**	-0.407**	-0.504**	-0.530**	0.471**
FACT-B4 social	-0,100	-0.173*	-0,102	-0,161	0.239**
FACT-B4 emotion	-0.356**	-0.377**	-0.354**	-0.512**	0.487**
FACT-B4 function	-0.282**	-0.363**	-0.296**	-0.363**	0.450**
FACT-B4 arm symptom	-0.318**	-0.395**	-0.371**	-0.430**	0.341**
EORTC-body image	-0.320**	-0.347**	-0.248**	-0.403**	0.370**
EORTC-sexual function	0,026	-0,034	-0,022	-0,017	0.192*
EORTC-sexual satisfaction	0,116	0,086	0,008	-0,064	0,095
EORTC-future	-0.255**	-0.320**	-0.214*	-0.406**	0.203*
EORTC-systemic completed	0.279**	0.284**	0.287**	0.390**	-0.335**
EORTC-breast symptoms	0.341**	0.331**	0.373**	0.429**	-0.215*
EORTC-arm symptoms	0.612**	0.637**	0.602**	0.561**	-0.389**
EORTC-hair loss	-0,092	0,106	-0,096	0,214	-0,102
EORTC: European Organization for Research and Treatment of Cancer; FACT-B4: Functional-Assessment-of-Cancer-Therapy-Breast-4; LYMQOL: Lymphedema-Quality-of-life-Questionnaire; * p<0.05; ** p<0.01.