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

Table 4 Correlations of Outcome variables (n = 100)

Correlations	1 ^a	2^b	3^c	4^d	5^e	6^f	7^g	8^h	9ⁱ	10^j	11^k
1. VAS (today) ^a	1
2. VAS (month)^b	0.58^**	1
3. C-MFPDI-FL^c	0.39^**	0.62^**	1
4. C-MFPDI-PA^d	0.15^**	0.19	0.40^**	1
5. C-MFPDI-PI^e	0.65^**	0.65^**	0.68^**	0.35^**	1
6. C-MFPDI total^f	0.48^**	0.65^**	0.96^**	0.57^**	0.82^**	1
7. TW-FFI-P^g	0.60^**	0.76^**	0.67^**	0.24^*	0.74^**	0.72^**	1
8. TW-FFI-D^h	0.49^**	0.63^**	0.68^**	0.21^*	0.66^**	0.70^**	0.82^**	1
9. TW-FFI -ALⁱ	0.37^**	0.41^**	0.61^**	0.26^**	0.54^**	0.62^**	0.60^**	0.71^**	1
10. EQ-5D utility score^j	−0.24^*	−0.21^*	−0.42^**	−0.07	−0.35^**	−0.40^**	−0.30^**	−0.43^**	−0.49^**	1
11. EQ-5D G-VAS^k	−0.19	−0.20^*	−0.30^**	−0.06	−0.28^**	−0.30^**	−0.17	−0.23^*	−0.24^*	0.36^**	1

* p < 0.05 (2-tailed)** p < 0.01 (2-tailed); ^a Visual analogue scale for foot pain on the day of survey; ^b Visual analogue scale for foot pain for the past month; ^c C-MFPDI functional limitation subscale score; ^d C-MFPDI personal appearance subscale score; ^e C-MFPDI pain intensity subscale score; ^f C-MFPDI total score; ^g Taiwan Chinese FFI pain subscale score; ^h Taiwan Chinese FFI disability subscale score; ^I Taiwan Chinese FFI activity limitation subscale score; ^j European Quality of Life – 5 Dimensions – 3 Levels utility score; ^k European Quality of Life – 5 dimensions – global visual analogue scale

ISSN: 1757-1146