Reliability and validity of Amharic version of EORTC QLQ-C30 and QLQ-BR23 modules for assessing health-related quality of life among breast cancer patients in Ethiopia

Table 4 Construct validity of EORTC QLQ-C30 Amharic version with its supplementary EORTC QLQ-BR23 scales in women with breast cancer in Ethiopia (n = 146)

Spearman’s correlation coefficients
	Body image	Sexual Functioning	Therapy side effects	Breast symptoms	Arm symptoms
Physical functioning	.224^a	.174^b	−.362^a	−.208^b	−.329^a
Role functioning	0.086	.198^b	−.264^a	−0.14	−.225^a
Emotional functioning	.394^a	0.064	−.471^a	−.294^a	−.328^a
Cognitive functioning	.408^a	0.125	−.405^a	−.177^b	−.261^a
Social functioning	.323^a	.183^b	−.266^a	−.216^a	−.228^a
Fatigue	−.354^a	−.245^a	.633^a	.376^a	.424^a
Nausea and vomiting	−.197^b	0.005	.302^a	.186^b	.262^a
Pain	−.214^a	−0.06	.516^a	.456^a	.495^a
Global Health score	.387^a	0.15	−.553^a	−.472^a	−.484^a

^aCorrelation is significant at the 0.01 level (2-tailed)
^bCorrelation is significant at the 0.05 level (2-tailed)
The bold entries indicate those sub-scales having spearman's correlation coefficients≥0.40

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