Table 3 Correlation analyses between the neuroimaging findings and cigarette smoking measures among 55 smokers.

From: Altered spontaneous brain activity in chronic smokers revealed by fractional ramplitude of low-frequency fluctuation analysis: a preliminary study

 

Smoking years

Cigarettes per day

FTND

Age at start of smoking

Caudate fALFF values

 Pearson correlation

−0.109

−0.005

0.037

−0.058

 Sig. (2-tailed)

0.429

0.971

0.787

0.672

Precuneus fALFF values

 Pearson correlation

0.287*

0.173

0.188

0.000

 Sig. (2-tailed)

0.034

0.206

0.169

0.999

ITG/IOG fALFF values

 Pearson correlation

0.314*

−0.008

−0.009

−0.012

 Sig. (2-tailed)

0.019

0.953

0.945

0.930

  1. *Significant correlation at the level of 0.05 (2-tailed); FTND Fagerström test for Nicotine Dependence; ITG: inferior temporal gyrus; IOG: inferior occipital gyrus.
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