Table 1.

Categorization of Subjects by Factors Potentially Relevant to Exhaled NO, as Determined from Parents' and Subjects' Questionnaire Responses, in Subjects with Technically Acceptable FeNO(50) (N = 1,631)

CATEGORY	PERCENT
GENDER*
Male	48.9
Female	51.1
ETHNICITY
Hispanic	55.9
African-American	1.8
Asian-American	3.7
Non-Hispanic White	30.2
Other/Unknown	8.4
RESPIRATORY HEALTH GROUPING
Asthma, inhaled corticosteroid use in past week	1.5
Asthma, inhaled corticosteroid use in past year, not in past week	1.6
Asthma, other medication use in past year	5.5
Asthma + allergy, no medication use in past year	9.8
Asthma, no allergy, no medication use in past year	1.8
Allergy, symptomatic in past year	21.3
Allergy, no symptoms in past year	29.9
Healthy (asthma, allergy reports all negative)	28.6
WHEEZE IN PAST YEAR
No/not reported	84.2
Yes	15.8
SECONDHAND SMOKE EXPOSURE IN PAST YEAR
No/not reported	91.1
Yes	8.9

^*Percentage breakdown in other categories did not vary significantly by gender.