Responsiveness and convergent validity of QLU-C10D and EQ-5D-3L in assessing short-term quality of life following esophagectomy

Table 4 Correlation between QLU-C10D and EQ-5D domains at follow-up

	EQ-5D utility score	Mobility	Self care	Usual activities	Pain/discomfort	Anxiety/depression
QLU-C10D utility score	0.7138	− 0.4804	− 0.2754	− 0.5857	− 0.2402	− 0.4608
Function domains
Physical function	− 0.5532	0.6022	0.3468	0.4594		0.2783
Role function	− 0.6132	0.4161	0.2535	0.6758	0.1767	0.2668
Social function	− 0.5715	0.3075	0.2950	0.5387		0.3766
Emotional function	− 0.6009	0.2474		0.3995		0.7113
Symptom domains
Pain	− 0.3190	0.1886		0.1966	0.5517
Fatigue	− 0.4716	0.3265	0.1755	0.4095		0.3155
Sleep	− 0.3385	0.2567	0.1926	0.2763		0.3241
Appetite	− 0.3470	0.2106		0.2769		0.3235
Nausea	− 0.3790	0.1829		0.2721	0.1746	0.3561
Bowel problems	− 0.2231				0.1990	0.2780

Correlations between dimensions were explored using patient responses at follow-up (42 days after esophagectomy). Only significant correlations (at < 0.05) are reported. Correlations were classified as very weak (r = 0–0.2), weak (r = 0.2–0.4), moderate (r = 0.4–0.7), strong (r = 0.7–0.9) or very strong (r = 0.9–1.0)

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