Matthias Wicki

Dr. Matthias Wicki


Research Focus & Metrics

Academic Career Length

21Years (2006-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 November 2010 in Addictive Behaviors
Verified
Journal Article
Closed access
MWMatthias Wicki
Matthias Wicki
EKEmmanuel Kuntsche
Emmanuel Kuntsche
GGGerhard Gmel
Gerhard Gmel

1 May 2014 in Journal of Studies on Alcohol and Drugs
Verified
Journal Article
Closed access
EKEmmanuel Kuntsche
Emmanuel Kuntsche
Saoirse Nic GabhainnSaoirse Nic Gabhainn
Saoirse Nic Gabhainn
CRChris Roberts
Chris Roberts
BWBéat Windlin
Béat Windlin
AVAlessio Vieno
Alessio Vieno
MWMatthias Wicki
Matthias Wicki
Objective:The purpose of this study was to test the structure and endorsement of drinking motives and their links to alcohol use among 11- to 19-year-olds from 13 European countries.Method:Confirma...

1 March 2015 in Journal of Adolescent Health
Verified
Journal Article
Closed access
EKEmmanuel Kuntsche
Emmanuel Kuntsche
MWMatthias Wicki
Matthias Wicki
BWBéat Windlin
Béat Windlin
CRChris Roberts
Chris Roberts
Saoirse Nic GabhainnSaoirse Nic Gabhainn
Saoirse Nic Gabhainn
ZDZsolt Demetrovics
Zsolt Demetrovics

1 October 2011 in Substance Abuse
Verified
Journal Article
Closed access
KBKim Bloomfield
Kim Bloomfield
MWMatthias Wicki
Matthias Wicki
SWSharon Wilsnack
Sharon Wilsnack
THTonda Hughes
Tonda Hughes
GGGerhard Gmel
Gerhard Gmel
Most research on sexual orientation and alcohol use in the United States has found higher rates of alcohol use and abuse among gay men and lesbians. Studies from other countries have found smaller or no differences between sexual minority and heterosexual women and men. The present study used general population survey data from 14 countries to examine high-volume and risky single-occasion drinking by sexual orientation. Data from 248 gay men and lesbians and 3720 heterosexuals were analyzed in a case-control design. In several countries partnered or recently partnered gay men and lesbians had no greater risk of heavy drinking or engaging in heavy drinking than heterosexual controls. Only lesbians in North America showed higher risk for both indicators. Future general population health research should include larger samples of gays and lesbians and use more comprehensive measures of sexual orientation for investigating the prevalence of health risk factors.

1 January 2010 in Journal of Studies on Alcohol and Drugs
Verified
Journal Article
Closed access
KBKim Bloomfield
Kim Bloomfield
MWMatthias Wicki
Matthias Wicki
NGNina-Katri Gustafsson
Nina-Katri Gustafsson
PMPia Mäkelä
Pia Mäkelä
RRRobin Room
Robin Room
European Union travelers' allowances for alcohol import to Denmark, Sweden, and Finland were abolished in 2004. In addition, excise taxes on alcohol were lowered in 2003 and 2005 in Denmark, and in 2004 in Finland. Using northern Sweden as a control site, this study examines whether levels of reported alcohol problems have changed in Denmark, Finland, and southern Sweden as a consequence of these policy changes. Annual cross-sectional surveys were conducted in Denmark, Finland, and Sweden from 2003 to 2006. Five dependency items and seven extrinsic alcohol-related problems were examined. Changes were analyzed within each country/region with logistic regressions and tested for short- and long-term changes. Differential change was also tested between each country and the control site, northern Sweden. Prevalence of alcohol problems decreased over the study period. Only in selected subgroups did problems increase. This mainly occurred in the samples for northern Sweden and Finland, and mostly among older age groups and men. In relation to the control site, however, no increases in problem prevalence were found. Our findings on a decline in reported alcohol problems largely agree with published reports on alcohol consumption over the same period in the study countries. They do not agree, however, with findings on changes in health and social statistics in Finland and Denmark, where some significant increases in alcohol-related harm have been found.

24 February 2011 in International Journal of Methods in Psychiatric Research
Verified
Journal Article
Open access
PDF file
UGUlrike Grittner
Ulrike Grittner
GGGerhard Gmel
Gerhard Gmel
SRSamuli Ripatti
Samuli Ripatti
KBKim Bloomfield
Kim Bloomfield
MWMatthias Wicki
Matthias Wicki
Attrition in longitudinal studies can lead to biased results. The study is motivated by the unexpected observation that alcohol consumption decreased despite increased availability, which may be due to sample attrition of heavy drinkers. Several imputation methods have been proposed, but rarely compared in longitudinal studies of alcohol consumption. The imputation of consumption level measurements is computationally particularly challenging due to alcohol consumption being a semi‐continuous variable (dichotomous drinking status and continuous volume among drinkers), and the non‐normality of data in the continuous part. Data come from a longitudinal study in Denmark with four waves (2003–2006) and 1771 individuals at baseline. Five techniques for missing data are compared: Last value carried forward (LVCF) was used as a single, and Hotdeck, Heckman modelling, multivariate imputation by chained equations (MICE), and a Bayesian approach as multiple imputation methods. Predictive mean matching was used to account for non‐normality, where instead of imputing regression estimates, “real” observed values from similar cases are imputed. Methods were also compared by means of a simulated dataset. The simulation showed that the Bayesian approach yielded the most unbiased estimates for imputation. The finding of no increase in consumption levels despite a higher availability remained unaltered. Copyright © 2011 John Wiley & Sons, Ltd.