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Table 3 Internal consistency and test-retest reliability of the C-MFPDI

From: Validation of the Chinese Manchester foot pain and disability index (C-MFPDI) among patients with inflammatory arthritis

Constructs	Items of the C-MFPDI^a	Item-to-total correlation (n = 100)	Cronbach’s α (n = 100)	Intra-class coefficient (n = 30)
Physical limitation			0.90	0.87
	Item 1	0.67
	Item 2	0.70
	Item 3	0.66
	Item 4	0.72
	Item 5	0.71
	Item 6	0.56
	Item 7	0.73
	Item 8	0.68
	Item 9	0.59
	Item 10	0.61
Personal appearance			0.71	0.82
	Item 11	0.55
	Item 12	0.55
Pain intensity			0.70	0.76
	Item 13	0.47
	Item 14	0.54
	Item 15	0.39
	Item 16	0.34
	Item 17	0.59
Total score			0.90	0.87

Note: ^aSimplified Chinese version of the Manchester Foot Pain and Disability Index

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