Table 3.

Correlation of the scores on the Fatigue Assessment Scale (FAS) and Small Fiber Neuropathy (SFN) Screening List (SFNSL) with the Cognitive Failure Questionnaire (CFQ)

CFQ scores	FAS scores: total	FAS scores: mental	FAS scores: physical	SFNSL scores
Correlation (R=) Significance (p-value)	0.65 <0.0001	0.60 <0.0001	0.64 <0.0001	0.53 <0.0001
CFQ scores		FAS scores >22: fatigue	FAS scores >34: extreme fatigue	SFNSL scores > 48: highly likely SFN
Correlation (R=) Significance (p-value)		0.27 0.002	0.46 <0.0001	0.40 <0.0001