Table 1.

Summary of data collection at each follow-up visit

	M0	M3	M6	M12
Socio-demographic characteristics	x	x	x	x
Socio-economic characteristics	x	x	x	x
History of substance use	x
Current drug use	x	x	x	x
Alcohol and tobacco use	x	x	x	x
Overdoses and suicidal risk	x		x	x
Drug use-related HIV-HCV risk practices	x	x	x	x
Addiction treatment	x	x	x	x
Health conditions and access to care	x		x	x
Screening for HIV and HCV	x		x	x
Criminality	x	x	x	x
Prison experience	x		x	x
Negative life events	x			x
Initiation injection	x		x	x
HR services user satisfaction	x		x	x
Sexual health		x
Other practices at risk of dermal contamination		x
DCR attendance and other services	x	x	x	x
Life course		x
Attention Deficit Hyperactivity Disorder		x
Anxiety: Beck anxiety inventory			x
Post-traumatic stress disorder			x
Discrimination		x
GONOGO Task		x		x
Mnemonic Test		x		x

DCR, drug consumption rooms; HCV, hepatitis C virus; HR, harm reduction.