Table 4.

HRs of incident VTE in relation to 1 interquartile range greater estimated concentration of chronic air pollutants among nonsmokers: the MESA 2000 to 2018

VariablePM2.5 (per 3.6 μg/m3)NO2 (per 13.3 ppb)NOx (per 30.0 ppb)O3 (per 5.8 ppb)
No. at risk 5786 5786 5786 5786 
VTE, no. 216 214 216 211 
Model 1 HR (95% CI) 1.46 (1.08-1.97) 2.66 (1.52-4.65) 2.23 (1.44-3.47) 0.71 (0.47-1.08) 
Model 2 HR (95% CI) 1.42 (1.05-1.92) 2.55 (1.47-4.45) 2.14 (1.38-3.33) 0.73 (0.48-1.11) 
Model 3 HR (95% CI)  1.39 (1.01-1.90) 2.61 (1.49-4.55) 2.14 (1.35-3.39) 0.72 (0.47-1.11) 
Noncancer VTE, no. 135 135 135 136 
Model 1 HR (95% CI) 1.52 (1.09-2.13) 3.33 (1.71-6.45) 2.48 (1.43-4.27) 0.61 (0.36-1.04) 
Model 2 HR (95% CI) 1.48 (1.06-2.08) 3.16 (1.62-6.15) 2.33 (1.35-4.05) 0.64 (0.37-1.08) 
Model 3 HR (95% CI)  1.45 (1.03-2.06) 2.95 (1.51-5.75) 2.20 (1.25-3.87) 0.67 (0.40-1.14) 
VariablePM2.5 (per 3.6 μg/m3)NO2 (per 13.3 ppb)NOx (per 30.0 ppb)O3 (per 5.8 ppb)
No. at risk 5786 5786 5786 5786 
VTE, no. 216 214 216 211 
Model 1 HR (95% CI) 1.46 (1.08-1.97) 2.66 (1.52-4.65) 2.23 (1.44-3.47) 0.71 (0.47-1.08) 
Model 2 HR (95% CI) 1.42 (1.05-1.92) 2.55 (1.47-4.45) 2.14 (1.38-3.33) 0.73 (0.48-1.11) 
Model 3 HR (95% CI)  1.39 (1.01-1.90) 2.61 (1.49-4.55) 2.14 (1.35-3.39) 0.72 (0.47-1.11) 
Noncancer VTE, no. 135 135 135 136 
Model 1 HR (95% CI) 1.52 (1.09-2.13) 3.33 (1.71-6.45) 2.48 (1.43-4.27) 0.61 (0.36-1.04) 
Model 2 HR (95% CI) 1.48 (1.06-2.08) 3.16 (1.62-6.15) 2.33 (1.35-4.05) 0.64 (0.37-1.08) 
Model 3 HR (95% CI)  1.45 (1.03-2.06) 2.95 (1.51-5.75) 2.20 (1.25-3.87) 0.67 (0.40-1.14) 

Model 1: Cox regression adjusted for age, sex, race/ethnicity, site, and education.

Model 2: Model 1 + adjustment for smoking status, secondhand smoke exposure, physical activity, and body mass index.

Model 3: Model 2 + adjustment for D-dimer, factor VIII, interleukin-6, C-reactive protein, and fibrinogen.

Slight reduction in sample size.

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