Reliability and validity of Japanese versions of KIDSCREEN-27 and KIDSCREEN-10 questionnaires

Table 2 Mean T values, test–retest ICCs, Cronbach’s alpha, and correlations of the J-KIDSCREEN-27 with the PedsQL or J-KIDSCREEN-52, and the J-KIDSCREEN-10 with the PedsQL or J-KIDSCREEN-27 in children

	J-KIDSCREEN-27 dimensions					J-KIDSCREEN-10
	Physical Well-being	Psychological Well-being	Parent Relations & Autonomy	Social Support & Peers	School Environment	General HRQOL Index
Number of items	5	7	7	4	4	10
Mean (SD)	54.0 (12.9)	51.8 (12.8)	48.6 (10.7)	52.8 (11.5)	53.9 (11.4)	52.4 (12.7)
Test–retest ICC	0.73	0.74	0.74	0.75	0.79	0.79
Cronbach’s alpha	0.85	0.87	0.78	0.85	0.85	0.84
Correlation with the PedsQL (r)
Physical functioning	0.34	0.34	0.26	0.31	0.31	0.34
Emotional functioning	0.26	0.45	0.33	0.32	0.37	0.43
Social functioning	0.22	0.35	0.27	0.35	0.32	0.34
School functioning	0.26	0.39	0.30	0.27	0.45	0.40
Psychosocial summary						0.46
Total						0.47
Correlation with the J-KIDSCREEN-52 (r)
Physical Well-being	1.00^a
Psychological Well-being		0.87
Moods & Emotions		0.83
Self-Perception		0.58
Autonomy			0.73
Parent Relations & Home life			0.71
Financial Resources			0.64
Social Support & Peers				0.96
School Environment					0.98
Correlation with the J-KIDSCREEN-27 (r)
Physical Well-being						0.62
Psychological Well-being						0.82
Parent Relations & Autonomy						0.71
Social Support & Peers						0.61
School Environment						0.77

r Pearson correlation coefficient explained in the J-KIDSCREEN-27 with the PedsQL or J-KIDSCREEN-52, and the J-KIDSCREEN-10 with the PedsQL or J-KIDSCREEN-27. Correlation coefficients between the J-KIDSCREEN-27 or -10 and the PedsQL ranged 0.10–0.30 are low, 0.31–0.50 moderate, and >0.50 high. Values in bold indicates the a priori expected highest correlations. Coefficients ≥0.70 are satisfactory between the J-KIDSCREEN-27 and -52 or -10 and -27
ICC intraclass correlation coefficient
^aPhysical Well-being in the J-KIDSCREEN-27 is identical with that in the J-KIDSCREEN-52

ISSN: 1347-4715