Table 1.

Demographics (n=305,339)

Characteristics	Total n	No HL n (%)	Combined HL n. (%)	Combined HL p-value	SNHL n (%)	SNHL p-value	CHL n (%)	CHL p-value
Total n	305,339	300,532 (98.4%)	4,807 (1.6%)		2,019 (0.7%)		492 (0.2%)
Age
21–69	252,228	248,902 (98.7%)	3,326 (1.3%)	<0.001	1,309 (0.5%)	<0.001	396 (0.2%)	0.190
70–90	53,111	51,630 (97.2%)	1,481 (2.8%)		708 (1.3%)		96 (0.2%)
Sex
Males	132,551	130,240 (98.2%)	2,311 (1.7%)	<0.001	1,000 (0.7%)	<0.001	234 (0.2%)	0.065
Females	172,788	170,289 (98.6%)	2,499 (1.4%)		1,017 (0.6%)		258 (0.1%)
Iron Deficiency Anemia Status
IDA	2,274	2,197 (96.6%)	77 (3.4%)	<0.001	26 (1.1%)	0.005	5 (0.2%)	0.633
No IDA	303,065	298,335 (98.4%)	4,730 (1.6%)		1,993 (0.7%)		487 (0.2%)

P value calculated by two-tailed chi squared test for each hearing loss group compared to the no hearing loss group.

HL, hearing loss; SNHL, sensorineural hearing loss; CHL conductive hearing loss; IDA, iron deficiency anemia