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. Author manuscript; available in PMC: 2017 Nov 1.

Published in final edited form as: Environ Res. 2016 Sep 29;151:756–762. doi: 10.1016/j.envres.2016.09.005

Table 2.

Unadjusted and adjusted linear regression models demonstrating the effect of physical activity on FeNO and BC exposure

	Unadjusted Model			Adjusted Model

	Parameter Estimate	95% Confidence Interval	R²	Parameter Estimate	95% Confidence Interval	R²
Black carbon	0.14	[−0.06, 0.33]	0.02	0.23	[0.04, 0.41]^a*	0.18
FeNO_overall	−0.19	[−0.46, 0.09]	0.01	−0.22	[−0.43, −0.01]^b*	0.49
FeNO_{high BC}	-	-	-	0.00	[−0.62, 0.62]^b	0.39
FeNO_{lower BC}	-	-	-	−0.27	[−0.02, −0.53]^b*	0.52

^a

Model adjusted for age, sex, race/ethnicity, and BMI z-score

^b

Model adjusted for ambient nitric oxide, age, sex, race/ethnicity, BMI z-score, cockroach sensitization, and total IgE

^*

p-value <0.05

High BC: ≥1,790 ng/m³ (upper tertile); Lower BC: < 1,790 ng/m³; BC: black carbon; FeNO: fractional exhaled nitric oxide