Table 3. Multinomial logistic regression of predictors against asthma severity among children aged 6-17, National Survey of Children’s Health (NSCH), 2017-2018.

Abbreviations: NBW, Normal birth weight; NP, Not premature; LBW, Low Birth Weight; P, Premature

^a. reference category are children with no current asthma

	Adjusted Model - Mild asthma a		Adjusted Model - Moderate/ Severe asthma a
Covariates	OR (95% CI)	P value	OR (95% CI)	P value
Age
6 -11 years	1 (Reference)		1 (Reference)
12-17 years	1.19(0.99-1.44)	0.06	1.06(0.78-1.44)	0.71
Sex
Females	1 (Reference)		1 (Reference)
Males	1.07(0.89-1.29)	0.50	1.24(0.93-1.64)	0.14
Race
White non-Hispanic	1 (Reference)		1 (Reference)
Hispanic	1.01(0.76-1.35)	0.95	1.25(0.74-2.12)	0.41
Black non-Hispanic	1.76(1.35-2.29)	<0.001	2.94(1.99-4.33)	<0.001
Multiracial/Others	1.25(0.94-1.67)	0.13	1.16(0.78-1.73)	0.45
Secondhand smoking
None	1 (Reference)		1 (Reference)
Outdoor smoking	1.25(0.96-1.63)	0.10	1.37(0.98-1.91)	0.07
Indoor smoking	1.56(0.95-2.58)	0.08	1.44(0.74-2.78)	0.28
Parent education
Some college and Higher	1 (Reference)		1 (Reference)
High school and lower	1.19(0.90-1.57)	0.21	0.84(0.58-1.22)	0.36
Family structure
Two family structure	1 (Reference)		1 (Reference)
Single/no family structure	1.08(0.87-1.34)	0.49	1.27(0.91-1.77)	0.16
Mold in home
No	1 (Reference)		1 (Reference)
Yes	1.48(1.15-1.91)	0.002	1.72(1.17-2.54)	0.006
Home pesticide use
No	1 (Reference)		1 (Reference)
Yes	0.84(0.70-1.01)	0.06	1.01(0.74-1.36)	0.97
Composite Indicator
NBW + NP	1 (Reference)		1 (Reference)
LBW+ NP	1.04(0.55-1.98)	0.91	0.69(0.40-1.18)	0.17
NBW + P	1.88(1.32-2.68)	< .001>	1.30(0.82-2.10)	0.27
LBW+P	1.90(1.40-2.56)	< .001>	1.81(1.16-2.84)	0.001