Table 2.

Noise generation based on age category

Age category (years)	Never/rarely hears noise	Sometimes/often/extremely often hears noise	Total
18–29	1 (50%)	1 (50%)	2
30–39	3 (30%)	7 (70%)	10
40–49	73 (53%)	64 (47%)	137
50–55	214 (64%)	123 (37%)	337
56–60	313 (70%)	136 (30%)	449
61–65	172 (81%)	41 (19%)	213
66–70	197 (80%)	50 (20%)	247
71–80	150 (81%)	35 (19%)	185