. Author manuscript; available in PMC: 2014 May 28.

Published in final edited form as: J Expo Sci Environ Epidemiol. 2008 Oct 8;19(5):525–533. doi: 10.1038/jes.2008.46

Table 6.

Regression coefficients (95% CI) of the changes in lung function (ΔFEV₁, ΔFVC, and ΔPEF, in the unit of L) measured after the morning shift relative to increases in the average and peak PM_2.5 mass concentration during the 1-h work shift (lnΔPM_2.5, in the unit of μg/m³) (N=27).

Lung function	PM type	Estimate (SE)	P-value
ΔFEV₁	ln_ΔPM_ave-m	0.02 (0.04)	0.68
ΔFVC	ln_ΔPM_ave-m	−0.10 (0.09)	0.31
ΔPEF	ln_ΔPM_ave-m	−0.54 (0.62)	0.42
ΔFEV₁	ln_ΔPM_peak-m	−0.13 (0.08)	0.16
ΔFVC	ln_ΔPM_peak-m	−0.12 (0.17)	0.51
ΔPEF	ln_ΔPM_peak-m	−1.46 (1.12)	0.24

Abbreviations: FVC, forced vital capacity; FEV₁, forced expired volume in the first second; PEF, peak expired flow.