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Table 3 Posterior estimates of % change in health effect outcome associated with an IQR a increase in traffic (left) or BC (right)

From: Structural equation modeling of parasympathetic and sympathetic response to traffic air pollution in a repeated measures study

S T R U C T U R A L E Q U A T I O N M O D E L (SEM)

B A Y E S I A N L I N E A R M I X E D M O D E L (BLMM)

Exposure/ Outcome

Moving average

% change in mean

95% PI

Posterior probability

Exposure/ Outcome

Moving average

% change in mean

95% PI

Posterior probability

Traffic/

4-hr

0.1

(−19.0, 25.0)

0.50c

BC/

4-hr

−4.8

(−14.8, 6.3)

0.81e

Para-

24-hr

3.2

(−19.4, 32.2)

0.40c

HFd

24-hr

−6.9

(−16.9, 4.5)

0.89e

sympathetic

48-hr

−3.0

(−24.7, 25.4)

0.59c

 

48-hr

−3.7

(−13.9, 7.9)

0.74e

toneb

72-hr

2.8

(−19.2, 29.1)

0.40c

 

72-hr

−2.9

(−13.5, 8.9)

0.70e

Traffic/

4-hr

6.6

(−6.7, 21.8)

0.83g

BC/

4-hr

10.1

(3.0, 17.6)

0.99i

LF/HFf

24-hr

7.2

(−8.0, 25.1)

0.82g

LF/HFh

24-hr

6.5

(−0.7, 14.2)

0.96i

 

48-hr

6.4

(−9.5, 24.3)

0.78g

 

48-hr

4.7

(−2.3, 12.2)

0.89i

 

72-hr

7.1

(−9.3, 26.0)

0.80g

 

72-hr

2.7

(−4.2, 10.1)

0.78i

  1. aInterquartile range (IQR): 4-hr = 0.88; 24-hr = 0.52; 48-hr = 0.43; 72-hr = 0.36.
  2. bSEM: effect of traffic pollution on parasympathetic tone.
  3. cPosterior probability that γ 1 < 0.
  4. dBLMM: effect of black carbon on HF.
  5. ePosterior probability that β 1 < 0.
  6. fSEM: effect of traffic pollution on LF/HF.
  7. gPosterior probability that δ 1 > 0.
  8. hBLMM: effect of black carbon on LF/HF.
  9. iPosterior probability that ρ 1 > 0.