Table 6.

Correlations (r_p) of the FFI-Th with pain-VAS, EQ-5D-5L, and EQ-VAS

Variables	Pain-VAS	EQ-5D-5L	EQ-VAS
FFI-Th: Total	0.695*	− 0.712*	− 0.508*
p-value	< 0.001	< 0.001	< 0.001
FFI-Th: Pain subscale	0.755*	− 0.626*	− 0.460*
p-value	< 0.001	< 0.001	0.001
FFI-Th: Disability subscale	0.640*	− 0.660*	− 0.552*
p-value	< 0.001	< 0.001	< 0.001
FFI-Th: Activity limitation subscale	0.364*	− 0.760*	− 0.292*
p-value	0.010	< 0.001	0.042

^*Significant tested by the Pearson correlation coefficient (r_p) at p < 0.05