Validation of the Japanese version of the Pediatric Quality of Life Inventory (PedsQL) Cancer Module

Table 5 Test-retest reliability of the Japanese version of the PedsQL Cancer Module

	2-4 years α ICC	5-7 years α ICC	8-12 years α ICC	13-18 years α ICC
Child self-report (n = 19)
Pain and hurt		.42 .54	.38 .94**	.94 .94**
Nausea		.49 .80**	.86 .50	.92 .99**
Procedural anxiety		.72 .97**	.86 .46	.64 .67
Treatment anxiety	NA	-.06 -.12	.94 .76*	.91 .20
Worry		.90 .85**	.94 .20	.74 .92**
Cognitive problems		.66 .79**	.75 .74	.84 .93**
Perceived physical appearance		.79 .87**	.75 .45	.90 .97**
Communication		.83 .76**	.81 .85*	.92 .78*
Total		.79 .83**	.68 .79*	.85 1.00**
Parent proxy report (n = 38)
Pain and hurt	.92 .86**	.85 .72**	.95 .99**	.99 .99**
Nausea	.95 .92**	.95 .83**	.89 1.00**	.98 .92*
Procedural anxiety	.98 .97**	.98 .95**	.96 .87*	.84 .75
Treatment anxiety	.81 .68*	.42 .34	.85 .74	.95 .89**
Worry	.95 .94**	.72 .51	.97 .87*	.95 .87**
Cognitive problems	.94 .90**	.92 .73**	.83 .71	.89 .92**
Perceived physical appearance	.94 .92**	.88 .86**	.82 .65	.94 .79*
Communication	.89 .81**	.88 .80**	.25 .25	.73 .71*
Total	.98 .97**	.92 .71*	.89 .86*	.93 1.00**

α: Cronbach's coefficient alpha, ICC: intraclass correlation coefficient, NA: not applicable, *P = < 0.05, **P = < 0.01 (2-tailed)

ISSN: 1477-7525