Table 1. ^aDemographic Characteristics of children and adolescent participants by ETD, National Health and Nutritional Examination Surveys, 2005–2010 (N = 2977).

		Eustachian Tube Dysfunction
		(+) Present (< or = -100 daPa)	(-) Absent (> -100 daPa)
		N = 182	N = 2795
Gender	Male,%	56.2	49.3
Age	Mean (SD)	14.7 (0.17)	15.1 (0.05)
Ethnicity	White	57.1	58.6
	Black	13.5	15.5
	Mexican	15.0	13.6
	Other	14.4	12.3
Education	Less than High School	21.8	18.8
	High School	25.5	21.6
	Greater than High School	52.7	59.6
Weight	Normal	49.7	65.7
	Overweight	17.5	16.0
	Obese	32.8	18.3
Sinus problem, cold or earacheb	Present	30.1	11.6

^aData in table 1 are unweighted percentages for categorical variables and median (interquartile range) for continuous variables.

^bSymptoms present or absent within 24 hours prior to tympanometry.

SD, Standard Deviation.