Table 1.

Characteristics of Study Participants Overall and by Asthma Subtypes (N = 27,437)

Characteristics	All	No asthma	Past asthma	Current asthma		P value
				Childhood onset	Adult onset
All participants, %	100	87.4	4.4	2.7	5.5
Median age (y)	55	55	54	52	57
Male sex, %	46.7	48.0	42.2	44.7	30.0	<.001
Race/ethnicity, %						<.001
Non-Hispanic White	73.6	73.5	74.0	73.3	75.9
Non-Hispanic Black	10.2	10.0	11.4	14.5	10.7
Mexican American	9.8	10.1	9.5	7.2	7.1
Other	6.3	6.4	5.1	5.0	6.3
Median PIR	3.3	3.4	3.5	3.0	2.7	<.001
Uninsured	11.7	11.9	12.0	11.6	8.1	.011
Smoking, %						<.001
Current	17.7	17.4	17.2	23.0	21.1
Former	27.4	27.0	30.8	26.3	31.3
Obesity, %	38.2	36.8	40.8	46.0	53.4	<.001
Airflow obstruction	20.4	18.6	26.0	38.2	35.7	<.001
Blood total cholesterol						.06
Borderline high	32.8	17.2	18.9	13.4	20.4
High	17.4	33.0	31.3	30.0	32.1
Serum LDL cholesterol						.38
Borderline high	23.8	23.9	26.0	23.0	22.1
High	12.1	12.1	12.2	7.5	14.3
Blood triglycerides						.01
Borderline high	16.4	16.5	15.3	12.3	18.8
High	23.3	23.0	22.6	26.9	26.3
Diabetes	16.3	15.8	17.4	17.9	22.7	<.001
Hypertension	48.6	47.7	49.3	51.9	60.6	<.001
CVD	12.8	11.9	12.5	18.4	25.0	<.001
CKD	13.0	12.9	11.0	11.9	16.0	.03
Arthritis						<.001
Rheumatoid arthritis	5.4	5.1	5.2	12.1	9.1
Osteoarthritis	15.7	15.0	18.6	15.5	25.9
Other/Unknown	14.1	13.4	14.9	17.0	22.7
Cancer	14.1	13.7	15.1	14.9	19.2	<.001
Anemia	10.2	9.7	10.8	12.4	15.8	<.001
Depression	7.7	6.8	8.8	15.4	17.1	<.001
COPD	1.7	1.6	2.9	2.6	1.5	.02

Abbreviations: CKD, chronic kidney disease; COPD, chronic obstructive pulmonary disease; CVD, cardiovascular disease; LDL, low density lipoprotein; PIR, poverty income ratio.

NOTE. Bold indicates significant difference.