Table 2:

Multivariable Linear Regression Estimating the Associations between NO₂ Exposure and Right Ventricular Structure and Function

Model	Per Interquartile Increase in NO2
	Difference	95% CI	P Value
RV mass, g
Limited model*	0.4	0.2 to 0.7	<0.001
Limited model* + city	0.9	0.3 to 1.4	0.002
Full model†	1.0	0.4 to 1.5	0.001
Full model† + LV mass	0.9	0.3 to 1.4	0.001
RVEDV, ml
Limited model*	2.9	1.4 to 4.7	<0.001
Limited model* + city	2.7	−0.9 to 6.2	0.14
Full model†	4.1	0.5 to 7.7	0.03
Full model† + LVEDV	2.7	0.0 to 5.4	0.05
RVEF, %
Limited model*	−0.1	−0.5 to 0.5	0.80
Limited model* + city	−0.2	−1.2 to 0.8	0.69
Full model†	−0.2	−1.2 to 0.8	0.72
Full model† + LVEF	0.0	−1.0 to 0.9	0.92

Definition of abbreviations: CI = confidence interval; LV = left ventricular; LVEDV = left ventricular end-diastolic volume; LVEF = left ventricular ejection fraction; NO₂ = nitrogen dioxide; RV = right ventricular; RVEDV = right ventricular end-diastolic volume; RVEF = right ventricular ejection fraction.

^*Adjusted for age, sex, race/ethnicity, height, and weight.

^†Adjusted for age, sex, race/ethnicity, height, weight, city, education, income, smoking status, pack-years, hypertension, diabetes, cholesterol, and impaired glucose tolerance.