Cultural adaptation and validation of the Norwegian version of the swallowing quality of life questionnaire (SWAL-QOL)

Table 2 Reliability estimates for Norwegian version of the Swallowing Quality of Life (Nor-SWAL-QOL)

Nor-SWAL-QOL	Internal consistency^a (Cronbach’s α)	n=	Test-retest^b (Spearman’s r_s)	n=	Intraclass correlation^c
Burden	0.85	101	0.68*	34	0.67
Food selection	0.85	102	0.83*	34	0.81
Eating duration	0.73	102	0.74*	34	0.74
Eating desire	0.73	100	0.73*	33	0.75
Fear	0.80	101	0.66*	33	0.67
Sleep	0.82	101	0.82*	34	0.82
Fatigue	0.89	98	0.84*	34	0.85
Communication	0.95	99	0.85*	33	0.88
Mental health	0.91	101	0.77*	34	0.79
Social functioning	0.91	98	0.85*	34	0.84
Symptom frequency battery	0.87	89	0.90*	33	0.89

^aInternal consistency
^bTest-retest average time interval 18.5 days; *Correlation is significant at p < 0.01
^cIntraclass correlation coefficient (ICC)

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