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Table 4 Regression coefficients of associations between median concentrations of UFPM exposure and lung function changes (post-pre)

From: Respiratory outcomes of ultrafine particulate matter (UFPM) as a surrogate measure of near-roadway exposures among bicyclists

Outcomes

Estimate

95% Confidence Interval

FVC (liters)

−0.196**

(−0.314, −0.077)

FEV1 (liters)

−0.153***

(−0.221, −0.084)

FEV1/FVC

0.002

(−0.009, 0.013)

PEF (liters/min)

−3.103

(−15.390, 9.183)

  1. Regression coefficients of natural log-transformed median concentration of UFPM exposure after adjusting for age, sex, wind direction (downwind vs. non-downwind), and day of the week (weekdays vs. weekend) variables
  2. ** p < 0.005; *** p < 0.0001