Table 5. The correlations between ESS, PQSI, BDI, WOMAC and Pain scores in the intervention and control groups.

		ESS		PQSI		BDS	WOMAC
	r	p	r	p	r	p	r	p
Intervention group
ESS	1.00
PSQI	0.70	0.001	1.00
BDI	0.39	0.09	0.62	0.003	1.00
WOMAC	0.45	0.046	0.19	0.41	0.36	0.11	1.00
Pain	0.18	0.44	0.09	0.71	0.14	0.55	0.51	0.022
Control group
ESS	1.00
PSQI	0.78	<0.001	1.00
BDI	0.27	0.25	0.44	0.05	1.00
WOMAC	0.72	<0.001	0.64	0.002	0.29	0.21	1.00
Pain	-0.18	0.45	-0.27	0.25	-0.17	0.47	-0.25	0.28
ESS: Epworth Sleep Scale, PSQI: Pittsburgh Sleep Quality Index, BDI: Beck Depression Inventory; WOMAC: Western Ontario and McMaster Universities Osteoarthritis; p value <0.05 significant.