The Choice of Screening Instrument Matters: The Case of Problematic Cannabis Use Screening in Spanish Population of Adolescents

Table 3

Results of a multinomial regression analysis comparing different combinations of being positive on the studied instruments with key demographic, substance use, and drug-related problems variables.

Variable; instrument positivity	AOR^a		95% CI
Two or more days of truancy in the past month (%)
SDS only	0.80		0.34–1.89
CAST and SDS	0.82		0.36–1.87
CAST only	1.65*		1.12–2.44
DSM-IV abuse only	2.05*		1.35–3.12
DSM-IV abuse and CAST	2.08**		1.40–3.09
DSM-IV abuse and SDS	2.19		0.71–6.81
DSM-IV abuse, CAST, and SDS	2.54**		1.63–3.95
Use of cannabis 10 days or more in the past month (%)
SDS only	0.58		0.17–1.91
CAST and SDS	6.21**		3.54–10.90
CAST only	4.93**		3.44–7.08
DSM-IV abuse only	1.18		0.68–2.04
DSM-IV abuse and CAST	5.15**		3.53–7.50
DSM-IV abuse and SDS	3.58*		1.23–10.41
DSM-IV abuse, CAST, and SDS	8.10**		5.32–12.33
Two or more days of alcohol bingeing in the past month (%)
SDS only	0.99		0.65–1.50
CAST and SDS	1.23		0.77–1.95
CAST only	1.11		0.86–1.45
DSM-IV abuse only	1.34*		1.00–1.78
DSM-IV abuse and CAST	1.52**		1.14–2.03
DSM-IV abuse and SDS	1.68		0.70–4.02
DSM-IV abuse, CAST, and SDS	1.62**		1.14–2.32
Majority or all friends consume cannabis (%)
SDS only	1.35		0.87–2.10
CAST and SDS	1.71*		1.05–2.78
CAST only	2.02**		1.54–2.66
DSM-IV abuse only	1.67**		1.24–2.25
DSM-IV abuse and CAST	2.33**		1.72–3.14
DSM-IV abuse and SDS	3.75**		1.50–9.39
DSM-IV abuse, CAST, and SDS	3.07**		2.11–4.49
Suffered an accident requiring medical help within six hours of cannabis use in the last twelve months (%)
SDS only	1.63		0.37–7.18
CAST and SDS	2.42		0.84–7.00
CAST only	2.59**		1.32–5.10
DSM-IV abuse only	2.27		0.99–5.22
DSM-IV abuse and CAST	5.62**		2.99–10.54
DSM-IV abuse and SDS	3.81		0.78–18.54
DSM-IV abuse, CAST, and SDS	5.87**		3.01–11.46
Detained by police within six hours of cannabis use in the last twelve months (%)
SDS only	2.66		0.74–9.54
CAST and SDS	2.71		0.92–7.95
CAST only	3.12**		1.55–6.28
DSM-IV abuse only	4.03**		1.88–8.64
DSM-IV abuse and CAST	5.94**		3.10–11.38
DSM-IV abuse and SDS	4.13		0.84–20.29
DSM-IV abuse, CAST, and SDS	9.48**		4.87–18.46
Thinking that habitual cannabis use causes quite some problems or a lot of problems (%)
SDS only	2.09*		1.06–4.09
CAST and SDS	0.72		0.43–1.20
CAST only	0.60**		0.45–0.81
DSM-IV abuse only	1.01		0.70–1.45
DSM-IV abuse and CAST	0.70*		0.51–0.96
DSM-IV abuse and SDS	1.88		0.60–5.86
DSM-IV abuse, CAST, and SDS	0.82		0.56–1.12
Smoked tobacco some days per week or more often in the past month (%)
SDS only	1.12		0.75–1.68
CAST and SDS	1.97*		1.16–3.32
CAST only	1.72**		1.30–2.27
DSM-IV abuse only	1.78		0.88–1.57
DSM-IV abuse and CAST	2.31**		1.66–3.21
DSM-IV abuse and SDS	0.81		0.34–1.93
DSM-IV abuse, CAST, and SDS	1.78**		1.20–2.64
Aged 14-15* (%)
SDS only	1.95*		1.14–3.33
CAST and SDS	1.06		0.58–1.93
CAST only	0.94		0.67–1.32
DSM-IV abuse only	1.52*		1.06–2.19
DSM-IV abuse and CAST	1.95**		1.35–2.81
DSM-IV abuse and SDS	3.64*		1.20–10.97
DSM-IV abuse, CAST, and SDS	2.25**		1.45–3.46
Aged 16* (%)
SDS only	1.41		0.82–2.43
CAST and SDS	0.95		0.53–1.68
CAST only	0.95		0.69–1.31
DSM-IV abuse only	1.00		0.69–1.45
DSM-IV abuse and CAST	1.21		0.84–1.73
DSM-IV abuse and SDS	2.15		0.70–6.66
DSM-IV abuse, CAST, and SDS	1.39		0.90–2.13
Years since first cannabis use	Estimate (B)	SE	Wald
SDS only	0.05	0.10	0.28
CAST and SDS	0.23	0.10	5.41*
CAST only	0.27	0.06	24.72**
DSM-IV abuse only	0.16	0.07	5.82*
DSM-IV abuse and CAST	0.40	0.06	48.63**
DSM-IV abuse and SDS	0.36	0.14	6.49*
DSM-IV abuse, CAST, and SDS	0.39	0.07	34.59**

All of the displayed variables were entered in the multinomial logistic regression model. All of them were significant in the overall model.
Stars signify statistical significance in the multinomial logistic regression model (*𝑃<0.05, **𝑃<0.01).
The reference category is “negative on all instruments.”
*Compared to those aged 17-18.