Skip to main content

Table 3 Associations between residential levels of PM2.5 and V and Day 6 lung function z-scores

From: Short-term exposure to PM2.5 and vanadium and changes in asthma gene DNA methylation and lung function decrements among urban children

Lung function

Beta coefficient a (95% CI)

(N:n = 141:215)

z-scoreb

PM2.5

V

FVC

−0.07 (−0.19, 0.05)

0.07 (−0.02, 0.15)

FEV1

−0.15 (−0.29, −0.01)*

0.09 (−0.02, 0.19)

FEV1/FVC

−0.17 (−0.31, −0.03)*

0.05 (−0.09, 0.19)

FEF25–75

−0.18 (−0.32, −0.04)*

0.03 (−0.12, 0.18)

  1. N: number of repeat subjects included for the analysis and n: number of observations from both Time 1 and Time 2
  2. FVC Forced vital capacity, FEV 1 Forced expiratory volume in one second, FEF 25–75 Forced expiratory flow at 25–75% of Forced Vital Capacity
  3. aTwo-pollutant models adjusted for heating season, asthma diagnosis, overweight, each lung function z- score measured on Day 1
  4. bBased on reference equation from the Global Lung Initiative 2012 [47]
  5. *p < 0.05