Table 4. Trends in prevalence, demographic characteristics and severity among children with hearing loss, 1991–2010.

	1991		1992		1993		1994		1996		2000		2002		2004		2006		2008		2010		1991–2010		Average annual percent change 1991–2010
	%	Prev	%	Prev	%	Prev	%	Prev	%	Prev	%	Prev	%	Prev	%	Prev	%	Prev	%	Prev	%	Prev	%	Prev
Total	n = 39	1.3	n = 41	1.4	n = 29	0.9	n = 49	1.5	n = 52	1.4	n = 53	1.2	n = 64	1.5	n = 49	1.2	n = 59	1.4	n = 83	1.8	N = 64	1.3	n = 582	1.4	0.93 (-0.62, 2.50)
Demographics
White non-Hispanic	48.7	1.1	36.6	0.9	51.7	0.9	40.8	1.1	53.8	1.5	32.1	0.9	48.4	1.8	24.5	0.7	33.9	1.3	43.4	2.4	35.9	1.4	40.5	1.3	2.79 (-0.18, 5.85)
Black non-Hispanic	43.6	1.5	48.8	1.7	31.0	0.7	53.1	1.9	38.5	1.3	50.9	1.4	37.5	1.2	51.0	1.3	42.4	1.2	28.9	1.2	51.6	1.6	43.0	1.4	-0.41 (-0.25, 1.73)
Male	71.8	1.8	58.5	1.6	44.8	0.8	63.3	1.8	44.2	1.2	58.5	1.4	53.1	1.5	59.2	1.4	42.4	1.1	57.8	2.1	57.8	1.5	55.5	1.5	0.42 (-1.58, 2.47)
Female	28.2	0.7	41.5	1.1	55.2	1.0	36.7	1.1	55.8	1.6	41.5	1.0	46.9	1.4	40.8	1.0	57.6	1.6	42.2	1.6	42.2	1.1	44.5	1.2	1.50 (-0.64, 3.69)
Level of severity
Moderate	38.5	0.5	43.9	0.6	37.9	0.3	46.9	0.7	42.3	0.6	49.1	0.6	43.8	0.6	53.1	0.6	47.5	0.6	55.4	1.0	43.8	0.6	46.6	0.6	1.99 (-0.13, 4.16)
Severe	23.1	0.3	19.5	0.3	27.6	0.2	22.4	0.3	19.2	0.3	17.0	0.2	20.3	0.3	26.5	0.3	23.7	0.3	26.5	0.5	23.4	0.3	22.7	0.3	1.78 (-0.18, 3.79)
Profound	38.5	0.5	36.6	0.5	34.5	0.3	30.6	0.4	36.5	0.5	34.0	0.4	35.9	0.5	20.4	0.2	28.8	0.4	18.1	0.3	32.8	0.4	30.6	0.4	-1.19 (-3.28, 0.94)