[Retracted] Substance Misuse Decreases Heart Rate Variability

Table 3

Distribution ratio of the drugs that the participants claimed to have used (multiple selections are accepted).

Amphetamine	MDMA	Marijuana	Ketamine	Nitrous oxide	Heroin	Others
67.6%	32.4%	29.4%	26.5%	5.9%	5.9%	5.9%