Table 1.

The demographic data of ten subjects

Characteristics	Frequency
Sex, Male (%)	10 (100)
Age (year), mean ± SD	27.1±4.7
Weight (kg), mean ± SD	77.3±14.8
Height (cm), mean ± SD	170.8±7.2
Body mass index (kg/m2), mean ± SD	26.4±3.9
Duration of abuse (year), median (min–max)	1.75 (0.6–5)
Kratom leaves consumed/day, median (min–max)	4 (1–9)

Abbreviations: max, maximum; min, minimum; SD, standard deviation.