Table IV.

Pearson's Product Moment Correlations among PedsQL™ Multidimensional Fatigue Scale and Sickle Cell Disease Module Scales for Child Self-Report (Above Diagonal) and Parent Proxy-Report (Below Diagonal) for Sickle Cell Disease Sample

Scale	TF	GF	SRF	CF	SCD	PH	PI	PMC	WI	WII	EM	TR	COI	COII
Total Fatigue Score (TF)	--	0.88	0.82	0.83	0.65	0.45	0.52	0.42	0.55	0.34	0.40	0.56	0.47	0.47
General Fatigue (GF)	0.90	--	0.63	0.61	0.70	0.50	0.58	0.44	0.60	0.34	0.45	0.56	0.43	0.53
Sleep/Rest Fatigue (SRF)	0.85	0.78	--	0.48	0.44	0.31	0.37	0.27	0.35	0.20	0.25	0.39	0.33	0.25
Cognitive Fatigue (CF)	0.82	0.57	0.45	--	0.52	0.33	0.36	0.36	0.44	0.33	0.31	0.47	0.44	0.42
SCD Total Score (SCD)	0.68	0.75	0.62	0.40	--	0.78	0.88	0.67	0.80	0.53	0.63	0.71	0.54	0.67
Pain and Hurt (PH)	0.62	0.70	0.59	0.34	0.86	--	0.69	0.48	0.52	0.29	0.43	0.40	0.29	0.37
Pain Impact (PI)	0.58	0.65	0.52	0.34	0.90	0.76	--	0.58	0.62	0.38	0.49	0.48	0.36	0.48
Pain Management and Control (PMC)	0.50	0.56	0.45	0.29	0.81	0.65	0.76	--	0.43	0.28	0.42	0.46	0.34	0.39
Worry I (WI)	0.48	0.54	0.46	0.26	0.81	0.60	0.63	0.62	--	0.44	0.48	0.58	0.36	0.55
Worry II (WII)	0.44	0.44	0.39	0.29	0.64	0.46	0.44	0.45	0.76	--	0.27	0.41	0.34	0.33
Emotions (EM)	0.56	0.61	0.48	0.36	0.77	0.65	0.63	0.58	0.59	0.48	--	0.41	0.30	0.45
Treatment (TR)	0.60	0.65	0.55	0.37	0.83	0.66	0.65	0.68	0.62	0.51	0.67	--	0.36	0.46
Communication I (COI)	0.34	0.32	0.28	0.28	0.42	0.22	0.29	0.25	0.25	0.15	0.26	0.34	--	0.45
Communication II (COII)	0.53	0.56	0.49	0.34	0.70	0.47	0.54	0.51	0.51	0.39	0.54	0.59	0.56	--

Note: All values are statistically significant at p<0.01. Pearson's product moment correlations for child self-report are presented above the diagonal. Pearson's product moment correlations for parent proxy-report are presented below diagonal. Pearson's product moment correlation effect sizes are designated as small (0.10), medium (0.30), and large (0.50).