Table 1.

Incidents of Hearing loss with and without SHS among adolescents in NHANES 2005–2006

	N	≤15dB	>15 dB, ≤25 dB	> 25 dB, ≤40dB	>40dB	p
						0.03
Unilateral Low frequency	1,533	90.45%	7.33%	1.17%	1.06%
Non Exposed	754	92.47%	6.15%	0.86%	0.52%
Exposed	799	88.18%	8.65%	1.51%	1.65%
						0.18
Bilateral low frequency	1,533	97.81%	2.07%	0.04%	0.07%
Non Exposed	754	98.35%	1.65%
Exposed	799	97.20%	2.54%	0.09%	0.17%
						0.29
Unilateral high frequency	1,533	84.62%	11.18%	2.53%	1.67%
Non Exposed	754	86.14%	10.10%	2.69%	1.07%
Exposed	799	82.91%	12.39%	2.36%	2.33%
						0.04
Bilateral high frequency	1,533	96.32%	3.18%	0.33%	0.17%
Non Exposed	754	97.46%	2.31%	0.16%	0.07%
Exposed	799	95.03%	4.17%	0.51%	0.29%