Auteur M. KLEINJAN

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Effectiveness of the 'Healthy School and Drugs' prevention programme on adolescents' substance use: a randomized clustered trial

M. MALMBERG ; M. KLEINJAN ; G. OVERBEEK ; A. VERMULST ; K. MONSHOUWER ; J. LAMMERS ; W. A. M. VOLLEBERGH ; R. C. M. E. ENGELS | 2014
Dans Addiction (Vol.109, n°6, June 2014) Article : Périodique

Aim: To evaluate the effectiveness of the Healthy School and Drugs programme on alcohol, tobacco and marijuana use among Dutch early adolescents. Design: Randomized clustered trial with two intervention conditions (i.e. e-learning and integral[...]

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Effectiveness of the universal prevention program 'Healthy School and Drugs': Study protocol of a randomized clustered trial

M. MALMBERG ; G. OVERBEEK ; M. KLEINJAN ; A. VERMULST ; K. MONSHOUWER ; J. LAMMERS ; W. A. M. VOLLEBERGH ; R. C. M. E. ENGELS | 2010
Dans BMC Public Health (Vol.10, n°541, 2010) Article : Périodique

BACKGROUND: Substance use is highly prevalent among Dutch adolescents. The Healthy School and Drugs program is a nationally implemented school-based prevention program aimed at reducing early and excessive substance use among adolescents. Althou[...]

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Mediational relations of substance use risk profiles, alcohol-related outcomes, and drinking motives among young adolescents in the Netherlands

J. LAMMERS ; E. KUNTSCHE ; R. C. M. E. ENGELS ; R. W. WIERS ; M. KLEINJAN | 2013
Dans Drug and Alcohol Dependence (Vol.133, n°2, December 2013) Article : Périodique

Aim: To examine the mediation by drinking motives of the association between personality traits (negative thinking, anxiety sensitivity, impulsivity, and sensation seeking) and alcohol frequency, binge drinking, and alcohol-related problems usin[...]

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Polydrug use typologies of regular ecstasy users visiting electronic dance music events: A latent class analysis

R. J. J. VAN BEEK ; M. BLANKERS ; M. KLEINJAN ; J. WALDRON ; M. GRABSKI ; T. FREEMAN ; V. CURRAN ; P. VAN DER POL ; M. VAN LAAR | 2024
Dans European Addiction Research (Vol.30, n°1, February 2024) Article : Périodique

INTRODUCTION: Polydrug use patterns among young adults using ecstasy vary, as well as their willingness to change them. Polydrug use patterns are likely associated with different adverse health outcomes. It is unknown whether polydrug use patter[...]

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Smoking behavior of women before, during, and after pregnancy: Indicators of smoking, quitting, and relapse

T. SCHEFFERS-VAN SCHAYCK ; M. TUITHOF ; R. OTTEN ; R. ENGELS ; M. KLEINJAN | 2019
Dans European Addiction Research (Vol.25, n°3, April 2019) Article : Périodique

BACKGROUND: Smoking cessation during pregnancy and preventing relapse postpartum is a pivotal public health priority. OBJECTIVES: This study examined the risk and protective indicators of women who (a) smoke before pregnancy, (b) smoke during t[...]

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The effectiveness of the 'What Do You Drink' web-based brief alcohol intervention in reducing heavy drinking among students: A two-arm parallel group randomized controlled trial

C. V. VOOGT ; E. A. P. POELEN ; M. KLEINJAN ; L. A. C. J. LEMMERS ; R. C. M. E. ENGELS | 2013
Dans Alcohol and Alcoholism (Vol.48, n°3, May-June 2013) Article : Périodique

Aims: To evaluate the effectiveness of a web-based brief alcohol intervention 'What Do You Drink' (WDYD) among heavy drinking students at 1- and 6-month post-intervention. Additionally, it was investigated whether certain subgroups would benefit[...]

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What do young adults expect from the recreational use of ecstasy (3,4-Methylenedioxymethamphetamine/Molly)? A latent class analysis of a convenience sample of Dutch young adults

M. C. DE JONGE ; A. J. BUKMAN ; T. TER BOGT ; S. A. ONRUST ; M. KLEINJAN | 2023
Dans European Addiction Research (Vol.29, n°3, July 2023) Article : Périodique

INTRODUCTION: This study offers insights into Dutch young people's expected social and personal consequences of ecstasy use. Substance use expectancies are assumed to be an essential component in explaining substance use behaviour and, therefore[...]

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