Thai version of the foot function index: a cross-cultural adaptation with reliability and validity evaluation

Table 5 Factor loading distribution (extraction method: principal component analysis with varimax rotation)

	Items	Factor loading^a
	Items	1	2	3	4
Pain	1. Worst foot pain	0.779	− 0.244	− 0.181	− 0.022
	2. Morning foot pain	0.790	− 0.146	0.006	0.103
	3. Pain walking barefoot	0.909	− 0.133	0.075	− 0.074
	4. Pain standing barefoot	0.894	− 0.119	0.107	− 0.006
	5. Pain walking with shoes	0.868	− 0.033	0.008	0.050
	6. Pain standing with shoes	0.857	− 0.042	0.057	0.015
	7. Pain walking with orthotics	0.547	0.485	− 0.384	0.550
	8. Pain standing with orthotics	0.577	0.495	− 0.388	0.508
	9. Foot pain at end of day	0.765	− 0.049	− 0.246	0.001
Disability	10. Walking in house	0.915	0.080	0.066	− 0.108
	11. Walking outside	0.936	− 0.095	0.023	− 0.156
	12. Walking four blocks	0.870	− 0.104	− 0.152	− 0.203
	13. Climbing stairs	0.840	− 0.150	− 0.108	− 0.102
	14. Descending stairs	0.900	− 0.107	− 0.028	0.017
	15. Standing on tiptoe	0.860	− 0.007	− 0.081	− 0.176
	16. Getting up from chair	0.909	− 0.128	0.028	− 0.060
	17. Climbing curbs	0.913	− 0.087	− 0.112	− 0.035
	18. Running or walking fast	0.901	− 0.083	− 0.109	0.029
Activity limitation	19. Using device indoors	0.513	− 0.048	0.642	0.311
	20. Using device outdoors	0.442	0.322	0.658	0.291
	21. Staying inside all day	0.631	− 0.060	0.422	0.098
	22. Staying in bed all day	0.372	0.827	0.056	− 0.369
	23. Limiting activities	0.370	0.812	0.114	− 0.412

ISSN: 2052-1847