Table 3.

Unadjusted Association of the Participant Characteristics and Exposures with Pulmonary Function and FeNO (n=661).

	%FEV1		%FVC		%FEV1/FVC		%FEF2575		FeNO*
	β	95% CI	β	95% CI	β	95% CI	β	95% CI	Odds Ratio	95% CI
Male sex	0.003	−0.014, 0.02	0.019	−0.002, 0.04	−0.004	−0.016, 0.008	−0.008	−0.051, 0.035	0.69	0.29, 1.64
Race/ethnicity
Hispanic-Mexican	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.
Hispanic-Other Hispanic	−0.073	−0.119, −0.026	−0.044	−0.078, −0.01	−0.031	−0.053, −0.008	−0.113	−0.199, −0.027	0.61	0.17, 2.17
Non-Hispanic White	0.007	−0.017, 0.031	0.006	−0.035, 0.023	0.012	−0.007, 0.03	0.058	−0.006, 0.123	0.74	0.36, 1.52
Non-Hispanic Black	−0.008	−0.049, 0.034	−0.0004	−0.032, 0.032	−0.018	−0.036, 0.001	−0.033	−0.111, 0.046	1.96	0.92, 4.35
Poverty-income ratio
1st quartile (< 0.83)	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.
2nd quartile (0.83 to 1.59)	0.035	−0.006, 0.075	0.043	0.006, 0.079	−0.011	−0.031, 0.01	0.017	−0.057, 0.091	1.09	0.38, 3.13
3rd quartile (1.60 to 3.09)	0.025	−0.012, 0.061	0.034	−0.003, 0.071	−0.006	−0.03, 0.018	−0.001	−0.088, 0.086	1.33	0.51, 3.57
4th quartile (at least 3.1)	0.009	−0.032, 0.05	0.001	−0.043, 0.044	0.006	−0.018, 0.03	0.037	−0.058, 0.131	1.0	0.45, 2.22
Missing	−0.031	−0.083, 0.021	−0.013	−0.07, 0.044	−0.017	−0.044, 0.011	−0.083	−0.176, 0.011	0.48	0.08, 2.86
Parent/caregiver education
Less than 9th grade	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.
9th–12th grade	0.010	−0.086, 0.105	0.004	−0.071, 0.078	0.005	−0.026, 0.035	0.028	−0.128, 0.185	2.70	0.68, 11.11
High school or GED	−0.017	−0.089, 0.055	−0.026	−0.098, 0.045	0.013	−0.003, 0.029	0.006	−0.088, 0.1	1.18	0.32, 4.35
Some college	−0.012	−0.0866, 0.063	−0.038	−0.109, 0.034	0.023	0.004, 0.042	0.057	−0.035, 0.149	0.47	0.09, 2.44
College or greater	−0.006	−0.075, 0.063	−0.019	−0.084, 0.046	0.015	0.001, 0.029	0.039	−0.073, 0.151	1.37	0.31, 6.25
Missing	−0.00	−0.086, 0.085	0.012	−0.08, 0.103	−0.009	−0.048, 0.03	−0.034	−0.153, 0.084	0.61	0.13, 3.03
Serum cotinine (ng/mL)
< 0.015	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.
0.015–1.9	0.036	0.003, 0.068	0.023	−0.015, 0.061	0.012	−0.002, 0.027	0.045	−0.036, 0.125	0.64	0.20, 2.08
≥ 2.0	0.011	−0.029, 0.051	0.011	−0.038, 0.059	−0.0004	−0.024, 0.023	−0.021	−0.103, 0.061	0.82	0.22, 3.03
Missing	−0.006	−0.006, 0.019	−0.039	−0.081, 0.003	0.018	−0.008, 0.044	0.088	−0.11, 0.128	0.83	0.14, 4.76
Weight category
Not overweight	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.
Overweight	0.025	−0.024, 0.074	0.038	0.003, 0.074	−0.016	−0.043, 0.01	0.007	−0.102, 0.117	1.59	0.54, 4.55
Obese	0.019	−0.023, 0.061	0.033	0.006, 0.061	−0.017	−0.046, 0.012	−0.014	−0.14, 0.111	1.06	0.28, 4.17
Doctor Diagnosed Asthma	−0.023	−0.062, 0.016	0.027	−0.004, 0.058	−0.043	−0.061, −0.025	−0.116	−0.191, −0.04	1.67	0.63, 4.55
Respiratory Illness in last week	−0.023	−0.057, 0.011	−0.012	−0.054, 0.031	−0.011	−0.033, 0.011	−0.062	−0.126, 0.003	2.94	1.25, 6.67
Age (years), mean (SD)	0.0004	−0.004, 0.005	0.002	−0.003, 0.006	0.002	0, 0.003	−0.005	−0.012, 0.001	1.04	0.98, 1.12
BPA (ng/mL), geometric mean (95% CI)	−0.006	−0.025, 0.013	0.004	−0.015, 0.022	−0.010	−0.018	−0.029	−0.057, −0.001	0.78	0.46, 1.3
BPA (ng/mL),
Quartile 1	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.	Ref
Quartile 2	0.013	−0.027, 0.054	0.018	−0.029, 0.066	−0.007	−0.033, 0.019	0.008	−0.079, 0.096	1.61	0.56, 4.59
Quartile 3	−0.021	−0.066, 0.023	0.011	−0.037, 0.06	−0.036	−0.064, −0.009	−0.072	−0.171, 0.027	0.5	0.14, 1.73
Quartile 4	−0.005	−0.056, 0.046	0.024	−0.03, 0.077	−0.034	−0.058, −0.010	−0.075	−0.171, 0.021	0.72	0.18, 2.92

^*This column represents the logistic regression model of being in the high FeNO category (i.e. an odds ratio over 1.0 suggests an increased odds of having high FeNO).