The PedsQL™ as a patient-reported outcome in children and adolescents with fibromyalgia: an analysis of OMERACT domains

Table 3 Intercorrelations among PedsQL™ Scales for Child Self-Report and Parent Proxy-Report for Fibromyalgia Sample

Scale	TG	PF	PH	EF	SF	SchF	TF	GF	S/RF	CF	P/HS
Total Generic Core (TG)	0.63***	0.79***	0.92***	0.71***	0.68***	0.81***	0.81***	0.81***	0.67**	0.69***	0.72***
Physical Functioning (PF)	0.80***	0.47***	0.48***	0.27*	0.40**	0.49***	0.75***	0.74***	0.61**	0.64**	0.63***
Psychosocial Health (PH)	0.93***	0.51***	0.66***	0.83***	0.71***	0.84***	0.69***	0.69***	0.57**	0.58**	0.62***
Emotional Functioning (EF)	0.73***	0.44**	0.76***	0.66***	0.35**	0.58***	0.50*	0.49*	0.31	0.49*	0.51***
Social Functioning (SF)	0.80***	0.45***	0.85***	0.45**	0.49***	0.40**	0.45*	0.47*	0.58**	0.21	0.43**
School Functioning (SchF)	0.77***	0.38**	0.85***	0.44**	0.65***	0.59***	0.71***	0.68***	0.47*	0.73***	0.54***
Total Fatigue (TF)	0.75***	0.61**	0.62**	0.53*	0.40	0.63**	0.81***	0.93***	0.84***	0.90***	0.64**
General Fatigue (GF)	0.77***	0.70***	0.60**	0.55**	0.38	0.52*	0.89***	0.78***	0.72***	0.76***	0.67***
Sleep/Rest Fatigue (S/RF)	0.53*	0.39	0.46*	0.41	0.33	0.38	0.84***	0.74***	0.77***	0.62**	0.48*
Cognitive Fatigue (CF)	0.59**	0.44*	0.50*	0.38	0.30	0.71***	0.80***	0.54*	0.45*	0.75***	0.53**
Pain and Hurt Scale (P/HS)	0.64***	0.53***	0.58***	0.56***	0.42**	0.44**	0.63**	0.66**	0.63**	0.34	0.73***

Pearson's product moment correlations for patient self-report above diagonal, Pearson's product moment correlations for parent proxy-report below diagonal, and two-way mixed effect model (absolute agreement, single measure) Intraclass Correlations (ICCs) for patient/parent agreement on diagonal. Effect sizes are designated as small (0.10), medium (0.30), and large (0.50) for Pearson's product moment correlations. ICCs are designated as ≤ 0.40 poor to fair agreement, 0.41–0.60 moderate agreement, 0.61–0.80 good agreement, and 0.81–1.00 excellent agreement. *p < .05, **p <. 01, ***p < .001.

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