Table 2. Relationship between CHHF Status and Subjective Hearing Discomfort and Tinnitus

	NCHHF	CHHF	Total	P value
Hearing discomfort
Not uncomfortable	10,630 (89.0)	2,970 (85.5)	13,600 (88.2)	< 0.001
Slightly uncomfortable	1,387 (9.2)	530 (12.0)	1,917 (9.8)
Very uncomfortable	282 (1.6)	117 (2.4)	399 (1.7)
Not audible at all	29 (0.2)	5 (0.2)	34 (0.2)
Tinnitus
Yes	2,561 (19.4)	1,043 (28.1)	3,604 (21.2)	< 0.001
Not uncomfortable	1,710 (69.6)	656 (67.2)	2,366 (69.0)	0.487
Annoying and distracting	766 (27.5)	348 (29.5)	1114 (28.1)
Difficult to sleep due to it	85 (2.8)	39 (3.3)	124 (2.9)

Values are given as unweighted number (weighted percentage). P values were calculated using Rao-Scott chi-square test. NCHHF: non-cold hypersensitivity in the hands and feet, CHHF: cold hypersensitivity in the hands and feet