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Table 3 Results of simple and multivariable regression between mercury and HRV and BP parameters

From: Cardiac autonomic activity and blood pressure among Nunavik Inuit adults exposed to environmental mercury: a cross-sectional study

Mercury (nmol/L)§

HRV and BP parameters

Simple analysis

Multivariable analysis

 

r Pearson

Crude β (95% CI)

Adjusted β (95% CI)

Model R2

VLF (ms2)§ a

-0.13

-0.12 (-0.26, 0.03)

-0.06 (-0.20, 0.07)

0.12**

LF (ms2)§ b

-0.18*

-0.20* (-0.38, -0.03)

-0.01 (-0.18, 0.16)

0.21***

HF (ms2)§ c

-0.11

-0.12 (-0.27, 0.03)

-0.01 (-0.17, 0.15)

0.17**

LF/HF § d

-0.10

-0.22 (-0.51, 0.07)

0.01 (-0.33, 0.34)

0.24***

NN (ms) e

0.04

6.32 (-13.62, 26.27)

-5.75 (-27.90, 16.41)

0.19***

SDNN (ms)§ f

-0.14*

-0.06* (-0.12, -0.001)

-0.056 (-0.12, 0.01)

0.09**

SDANN (ms)§ g

-0.09

-0.05 (-0.11, 0.01)

-0.086* (-0.16, -0.01)

0.02

rMSSD (ms) § h

-0.12

-0.06 (-0.12, 0.01)

-0.03 (-0.09, 0.04)

0.12**

pNN50 (%) § i

-0.12

-0.19 (-0.39, 0.02)

-0.09 (-0.32, 0.13)

0.12*

CVRR (%) § j

-0.18*

-0.07* (-0.12, -0.01)

-0.057 (-0.11, 0.001)

0.03*

SBP (mm Hg) k

0.25***

5.20*** (2.70, 7.70)

4.77* (1.12 – 8.42)

0.27***

DBP (mm Hg) l

0.01

0.13 (-1.44, 1.71)

1.99 (-0.29, 4.29)

0.08*

PP (mm Hg) m

0.33***

5.07*** (3.15 – 6.99)

3.40* (1.11 – 5.69)

0.41***

  1. * p < 0.05; ** p < 0.01; *** p < 0.0001; § Log-transformed variables; a model adjusted for HDL, WC and DHA; b model adjusted for smoking, DHA, triglycerides, EPA, WC, HOMA-IR and age; c model adjusted for smoking, triglycerides, EPA, alcohol, DHA, HOMA-IR, HDL, gender and WC; d model adjusted for alcohol, DHA, HDL, EPA, LDL, triglycerides, age, HOMA-IR, WC, gender and socio-economic status; e model adjusted for total income, EPA, smoking, gender, HOMA-IR, HDL and age; f model adjusted for EPA and HOMA-IR; g model adjusted for EPA; h model adjusted for smoking, HDL, DHA, WC and HOMA-IR; i model adjusted for smoking, HDL, HOMA-IR, DHA, age and WC; j model adjusted for EPA; k model adjusted for age, WC and selenium; l model adjusted for EPA, selenium and triglycerides; m model adjusted for selenium, WC and age.