Table 2 Health measures stratified by distance to I-93.

From: Effect of time-activity adjustment on exposure assessment for traffic-related ultrafine particles

Health measure

Total (N=140)

≤50 m (N=20)

51–500 m (N=95)

>1,000 m (N=25)

BMI, mean (SD)a

29.2 (6.9)

32.9 (8.4)b

29.3 (6.6)

26.0 (5.5)

hsCRP mg/l, median (IQR)

1.62 (2.8)

1.92 (4.4)

1.92 (2.9)

0.94 (1.0)

IL-6 pg/ml, median (IQR)

1.61 (2.3)

1.63 (2.9)

1.78 (2.1)

0.97 (0.8)

  1. aSample size differs due to missing BMI values ≤50 m (n=19); 51–500 m (n=89); and >1,000 m (n=25).
  2. bIndicates significant (P≤0.05) difference between ≤50 m and >1,000 m distance groups.
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