2.3 Assessment of substance use, psychological functioning and
menstrual phase
Substance use was assessed within all participants. For cocaine use
severity and related problems in the past twelve months, the Drug Use
Disorder Identification Test for cocaine (DUDIT)(Berman et al. ,
2005) was used. In addition, the Time Line Follow-Back (TLFB)
procedure(Robinson et al. , 2014) was completed to determine
cocaine use (grams and days per month), alcohol use and cannabis use in
the 28 days prior to study participation, as well as alcohol . The age
of onset was measured by using an in-house questionnaire. Tobacco use
was assessed using an in-house questionnaire (number of smoking days per
week and cigarettes per day). Finally, a self-report questionnaire based
on the Structured Clinical interview for the DSM (SCID)(First, 2015) was
used to assess symptoms for CUD, cannabis use disorder, and alcohol use
disorder.
All participants completed several self-report questionnaires in order
to assess psychological functioning. Specifically, severity of
depressive symptoms was measured using the Beck Depression Inventory
(BDI-II)(BECK, 1961), state and trait anxiety was measured by using the
State and Trait Anxiety Inventory (STAI)(Bados & Gómez-benito, 2010),
attention deficit hyperactivity disorder (ADHD) symptom severity was
assessed through the ADHD Rating Scale (ADHD-RS)(Sandra Kooij et
al. , 2008), childhood trauma through the Childhood Trauma Questionnaire
(CTQ)(Bernstein et al. , 2003) impulsivity was measured by using
the Barratt Impulsiveness Scale (BIS-11)(Patton et al. , 1995) and
education level was assessed with an in-house questionnaire.
Using an inhouse developed questionnaire, hormonal contraceptive use or
menstrual phase was determined. For naturally cycling females, menstrual
phase was determined using an in-house developed questionnaire that
assessed averaged duration of the menstrual cycle and days since last
menstruation. Based on this information, females were grouped as
hormonal contraceptive users, being in the luteal phase of the menstrual
cycle or being in the follicular phase of the menstrual cycle for
exploratory analyses. See supplementary materials for more information.