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Table 5 Percent changeain FVC associated with an interquartile-range increase in personal levels of PM 2.5 , elemental carbon (EC), or elemental components of PM 2.5 b, stratified by group

From: Air pollution exposure and lung function in highly exposed subjects in Beijing, China: a repeated-measure study

 

Office workers (observations = 118)

Truck drivers (observations = 119)

 

IQRc

% change

(95% CI)

FDRd

IQRc

% change

(95% CI)

FDRd

PM2.5

78.08

0.37

(-1.60; 2.38)

0.961

86.63

-0.29

(-4.18; 3.75)

0.886

EC

5.86

-0.49

(-3.29; 2.39)

0.961

8.26

-1.93

(-6.58; 2.94)

0.541

K

0.55

2.00

(0.04; 3.99)

0.500

1.61

-0.97

(-8.79; 7.52)

0.886

S

6.98

-1.52

(-5.26; 2.36)

0.961

7.61

3.65

(-3.01; 10.77)

0.490

Fe

0.19

1.20

(-0.56; 2.98)

0.940

0.84

-4.10

(-8.48; 0.49)

0.170

Si

0.58

-0.18

(-2.00; 1.68)

0.961

2.73

-8.14

(-13.77; -2.14)

0.058

Al

0.33

-0.48

(-3.17; 2.28)

0.961

1.27

-6.64

(-11.53; -1.47)

0.058

Zn

0.17

0.65

(-1.12; 2.45)

0.961

0.31

2.08

(-2.49; 6.86)

0.541

Ca

0.21

-0.12

(-2.43; 2.24)

0.961

2.68

-4.34

(-7.83; -0.73)

0.058

Ti

0.02

0.07

(-2.61; 2.82)

0.961

0.05

-5.63

(-10.07; -0.96)

0.058

  1. aAdjusted for age, sex, BMI, number of cigarettes smoked during examination time, day of the week, time spent commuting to work, work hours per week, temperature, and dew point values. For exposures other than PM2.5, PM2.5 was also adjusted.
  2. bMeasured during the work hours of examination days using light-weight personal monitors.
  3. cPercent changes and 95% confidence intervals are scaled to the interquartile range (IQR) of the exposures.
  4. dFDR: Benjamini and Hochberg false discovery rate.