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Table 5 Effect of PM 2.5 on HRV

From: Heart rate variability and DNA methylation levels are altered after short-term metal fume exposure among occupational welders: a repeated-measures panel study

 

Unadjusted regression

Adjusted regressiona

β

95% CI

p-value

β

95% CI

p-value

SDNN b (msec)

-0.31

(-0.54 ~ -0.08)

0.008

-0.20

(-0.46 ~ 0.07)

0.138

rMSSD b (msec)

-0.28

(-0.52 ~ -0.04)

0.024

-0.20

(-0.49 ~ 0.08)

0.157

pNN10 (%)

-0.16

(-0.26 ~ -0.06)

0.002

-0.16

(-0.28 ~ -0.05)

0.006

pNN20 (%)

-0.14

(-0.24 ~ -0.04)

0.008

-0.13

(-0.25 ~ -0.01)

0.030

LF b (msec2)

-0.59

(-1.07 ~ -0.11)

0.017

-0.43

(-0.98 ~ 0.13)

0.127

HF b (msec2)

-0.80

(-1.40 ~ -0.20)

0.008

-0.76

(-1.46 ~ -0.05)

0.035

  1. a Adjusted for age, starting time of the day, season, sampling year, current smoking status, and second-hand smoke exposure.
  2. b The outcome measurements were natural log (ln)-transformed.