TY - JOUR
T1 - Cannabis use and subclinical positive psychotic experiences in early adolescence
T2 - findings from a Dutch survey
AU - van Gastel, Willemijn A
AU - Wigman, Johanna T W
AU - Monshouwer, Karin
AU - Kahn, René S
AU - van Os, Jim
AU - Boks, Marco P M
AU - Vollebergh, Wilma A M
N1 - © 2011 The Authors, Addiction © 2011 Society for the Study of Addiction.
PY - 2012/2
Y1 - 2012/2
N2 - AIMS: To investigate the association between early cannabis use and subclinical psychotic experiences, distinguishing between five levels of use: never used, discontinued use (life-time users who did not use in the preceding year), experimental use, regular use and heavy use.DESIGN: Cross-sectional observational study.SETTING: Dutch Health Behaviour in School-aged Children (HBSC) study, 2005 wave.PARTICIPANTS: A total of 4552 secondary school children aged 12-16 years.MEASUREMENTS: Cannabis use, Community Assessment of Psychic Experiences (CAPE) positive scale, confounding factors: age, gender, family affluence, household composition, social support, alcohol use, cigarette smoking, ethnicity and urbanicity.FINDINGS: The association between cannabis use and subclinical positive symptoms was confirmed, and remained significant after extensive adjustment for potential confounders. Associations were found for all user groups, with strongest associations for the discontinued use group (β = 0.061, P = 0.000) and for the heavy use group (β = 0.065, P = 0.000).CONCLUSIONS: There is an enduring association between cannabis use at an early age and subclinical positive psychotic experiences, even after abstaining from cannabis for at least 1 year.
AB - AIMS: To investigate the association between early cannabis use and subclinical psychotic experiences, distinguishing between five levels of use: never used, discontinued use (life-time users who did not use in the preceding year), experimental use, regular use and heavy use.DESIGN: Cross-sectional observational study.SETTING: Dutch Health Behaviour in School-aged Children (HBSC) study, 2005 wave.PARTICIPANTS: A total of 4552 secondary school children aged 12-16 years.MEASUREMENTS: Cannabis use, Community Assessment of Psychic Experiences (CAPE) positive scale, confounding factors: age, gender, family affluence, household composition, social support, alcohol use, cigarette smoking, ethnicity and urbanicity.FINDINGS: The association between cannabis use and subclinical positive symptoms was confirmed, and remained significant after extensive adjustment for potential confounders. Associations were found for all user groups, with strongest associations for the discontinued use group (β = 0.061, P = 0.000) and for the heavy use group (β = 0.065, P = 0.000).CONCLUSIONS: There is an enduring association between cannabis use at an early age and subclinical positive psychotic experiences, even after abstaining from cannabis for at least 1 year.
KW - Adolescent
KW - Age Factors
KW - Analysis of Variance
KW - Child
KW - Confounding Factors (Epidemiology)
KW - Cross-Sectional Studies
KW - Female
KW - Humans
KW - Male
KW - Marijuana Abuse
KW - Netherlands
KW - Psychotic Disorders
KW - Risk Factors
U2 - 10.1111/j.1360-0443.2011.03626.x
DO - 10.1111/j.1360-0443.2011.03626.x
M3 - Article
C2 - 21851445
VL - 107
SP - 381
EP - 387
JO - Addiction
JF - Addiction
SN - 0965-2140
IS - 2
ER -