Name, Year	Poly-Abuse (Substance)
Abouchedid et al., 2016 [26]	LSD
Altintas et al., 2016 [27]	Cannabis, alcohol, stimulant, opioid
Barceló et al., 2017 [28]	Cannabis
Bassir et al., 2016 [29]	Cannabis
Bebarta et al., 2012 [30]	Acetaminophen, dextromethorphan, doxylamine
Berry-Cabàn et al., 2013 [31]	Mephedrone, cannabis, alcohol
Besli et al., 2015 [32]	Alcohol, amphetamines
Bonaccorso et al., 2018 [33]	Crack, cocaine, heroin, alcohol, MDMA, cannabis, legal highs polysubstance misuse
Celofiga et al., 2014 [34]	NA
Di Petta et al., 2016 [35]	Salvia divinorum, cocaine, efedrine, ketamine, alcohol
Durand et al., 2015 [36]	Cannabis
Every-Palmer et al., 2011 [37]	No
El Zahran et al., 2019 [38]	No
Glue et al., 2013 [39]	NA
Haro et al., 2014 [40]	NA
Helge Müller et al., 2009 [41]	No
Hermanns-Clausen et al., 2017 [42]	Amphetamines
Hoyte et al., 2012 [43]	No
Hurst et al., 2011 [44]	Cannabis, alcohol
Kekelidze et al., 2019 [45]	NA
Malik et al., 2021 [46]	NA
Monte et al., 2017 [47]	NA
Oluwabusi et al., 2012 [48]	NA
Ozer et al., 2016 [49]	No
Peglow et al., 2012 [50]	No
Rahmani et al., 2013 [51]	Cannabis, LSD, psilocybin, mushrooms, Spice, bath salts, oxycodone
Roberto et al., 2016 [52]	No
Satodiya et al., 2020 [53]	NA
Simmons et al., 2011 [54]	No
Skryabin et al., 2019 [55]	NA
Skryabin et al., 2018 [56]	NA
Sönmez et al., 2016 [57]	No
Sweet et al., 2017 [58]	NA
Tung et al., 2012 [59]	Polysubstance abuse
Udow et al., 2018 [60]	No