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Table 1 Characteristics of the deceased individuals in this study

From: Mitochondrial DNA methylation profiling of the human prefrontal cortex and nucleus accumbens: correlations with aging and drug use

 

Control

(N = 39)

Drug usea

(N = 14b)

Group comparison

P value

Age (year), mean (SD)

54.9 (21.5)

37.5 (12.0)

0.006

Alcohol intake, n (%)

7 (18.0)

2 (14.3)

0.754

Postmortem interval ≤ 6 h, n (%)

32 (82.0)

9 (64.3)

0.173

Cause of death, n (%)

  

0.015

 Accident

17 (43.6)

4 (28.6)

 

 Homicide

3 (7.7)

5 (35.7)

 

 Suicide

2 (5.1)

3 (21.4)

 

 Natural death

15 (38.5)

1 (7.1)

 

 Undetermined

2 (5.1)

1 (7.1)

 
  1. aThis group included deceased individuals who had used heroin, amphetamine-type stimulants (ATSs) or ketamine
  2. bOne of the heroin users without adequate methylation data for the PFC
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Clinical Epigenetics

ISSN: 1868-7083

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