Reliability and validity of the Dutch version of the foot and ankle outcome score (FAOS)

Table 2 Construct validity of the Dutch FAOS – Spearman’s correlation coefficients between FAOS and FFI, WOMAC and SF-36

	FAOS
	Symptoms	Pain	ADL	Sports & recreational activity	Quality of life
FFI
Pain	0.56	0.90	0.86	0.71	0.78
Disability	0.62	0.82	00.89	0.84	0.84
Activity restriction	0.55	0.71	0.80	0.76	0.74
WOMAC
Pain	0.57	0.89	0.90	0.74	0.78
Stiffness	0.65	0.72	0.73	0.66	0.74
Function	0.58	0.79	0.92	0.82	0.75
SF-36
Physical functioning	0.53	0.62	0.79	0.71	0.62
Social functioning	0.33	0.52	0.63	0.42	0.48
Role-physical	0.37	0.51	0.60	0.53	0.48
Role-emotional	0.11	0.21	0.36	0.24	0.21
Mental health	0.12	0.15	0.20	0.26	0.28
Vitality	0.27	0.46	0.54	0.51	0.50
Pain	0.58	0.75	0.81	0.77	0.72
General health	0.19	0.45	0.52	0.34	0.33
Health change	0.14	0.42	0.44	0.42	0.38

ISSN: 1471-2474