Johanna Katharina Loy

Ms. Johanna Katharina Loy


Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

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

Representative Publications

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2 May 2022 in Journal of Behavioral Addictions
Verified
Journal Article
Open access
PDF file
CGCorinna Gartner
Corinna Gartner
ABAndreas Bickl
Andreas Bickl
SHSabine Härtl
Sabine Härtl
JLJohanna Katharina Loy
Johanna Katharina Loy
LHLaura Häffner
Laura Häffner
Background and aim: A wide range of studies indicates that men and women with Problem (PrG) and Pathological Gambling (PG) differ in several clinical and sociodemographic characteristics. However, evidence for sex differences, such as the telescoping effect, is contradictory, and it is still unclear whether sex differences observed in offline gambling can also be found for online gambling. Furthermore, reviews have so far focused on binary sex differences but neglect gender aspects. In this study, an updated literature survey of sex- and gender-related differences in PrG and PG was conducted. Methods: We searched PsyInfo, Medline/Pubmed, and the Web of Science databases from 2005 to 2020 for studies investigating sex and gender differences in gambling. A total of 126 papers were included in the literature survey. Results: We are presenting our findings according to the categories ‘prevalence’ (offline, online, LGBTQI*), ‘sociodemographic factors’, ‘preferred gambling type’, ‘gambling motives’, ‘severity’, ‘progression of gambling problems’, ‘use of professional help/motivation for treatment’, ‘comorbidity’, ‘trauma’, ‘violence and criminality/delinquency’. The studies indicate that, despite some robust sex differences (e.g., concerning prevalence rates), results for most areas were mixed or suggest no sex differences (e.g., violence, gambling motives). Discussion and conclusion: To date, there is a lack of studies assessing gender, and not only sex, warranting further research in this area.

1 November 2021 in Drug and Alcohol Dependence
Verified
Journal Article
Closed access
JLJohanna Katharina Loy
Johanna Katharina Loy
NSNicki-Nils Seitz
Nicki-Nils Seitz
EBELIN KRISTIN BYE
ELIN KRISTIN BYE
KRKirsimarja Raitasalo
Kirsimarja Raitasalo
RSRenate Soellner
Renate Soellner
LKLudwig Kraus
Ludwig Kraus

14 April 2023 in Journal of Gambling Studies
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Journal Article
Open access
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ABAndreas M. Bickl
Andreas M. Bickl
LKLudwig Kraus
Ludwig Kraus
JLJohanna Katharina Loy
Johanna Katharina Loy
PKPeter Kriwy
Peter Kriwy
PSPawel Sleczka
Pawel Sleczka
LSLarissa Schwarzkopf
Larissa Schwarzkopf
Young adult men who gamble frequently face an elevated risk of developing gambling-related problems. So far, little is known about how changing levels of perceived social support interact with the course of gambling behaviour and gambling-related problems in this population. Using data from a prospective single-arm cohort study (Munich Leisure Time Study), we applied hierarchical linear models to investigate the longitudinal association of changes in perceived emotional and social support (hereafter PESS; operationalized as ENRICHD Social Support Instrument score) with gambling intensity, gambling frequency, and fulfilled criteria for gambling disorder. Pooling data from three time points (baseline, 12-month and 24-month follow-ups) to assess two 1-year intervals, these models disentangle the associations of (a) “level of PESS” (cross-sectional, between participants) and (b) “changes in individual PESS” (longitudinally, within-participants). Among the 169 study participants, higher levels of PESS were associated with fewer gambling-related problems (− 0.12 criteria met; p = 0.014). Furthermore, increasing individual PESS was associated with lower gambling frequency (− 0.25 gambling days; p = 0.060) and intensity (− 0.11 gambling hours; p = 0.006), and fewer gambling-related problems (− 0.19 problems; p < 0.001). The results suggest a mitigating influence of PESS on gambling behaviour and gambling-related problems. Increasing individual PESS appears more decisive for this pathway than high initial levels of PESS. Treatment and prevention strategies that activate and reinforce beneficial social resources in people with gambling-related problems are recommended and promising.

12 June 2023 in Journal of Behavioral Addictions
Verified
Journal Article
Open access
PDF file
PWPia M. Wullinger
Pia M. Wullinger
ABAndreas M. Bickl
Andreas M. Bickl
JLJohanna Katharina Loy
Johanna Katharina Loy
LKLudwig Kraus
Ludwig Kraus
LSLarissa Schwarzkopf
Larissa Schwarzkopf
Background and aims: Individuals with gambling disorder (GD) often suffer from psychiatric comorbidities. Previous studies demonstrated greater severity of GD among gamblers with psychiatric comorbidities. However, evidence on the association between psychiatric comorbidity and course of GD severity during and after outpatient treatment is sparse. This study analyses data from a longitudinal one-armed cohort study on outpatient addiction care clients over three years.Methods: We investigated the course of GD severity using data from 123 clients in 28 outpatient addiction care facilities in Bavaria using generalized estimation equations (GEE). We applied time* interaction analyses to examine different development profiles in participants with and without (1) affective disorders, or (2) anxiety disorders, and (3) to account for the co-occurrence of both.Results: All participants benefitted from outpatient gambling treatment. Improvement in GD severity was poorer in participants with anxiety disorders compared to participants without anxiety disorders. The co-occurrence of affective and anxiety disorders was linked to a less favourable course of GD than the presence of affective disorders alone. However, the combined occurrence of both disorders was more favourable than the presence of anxiety disorders alone.Discussion and conclusions: Our study suggests that clients with GD, with and without psychiatric comorbidities, benefit from outpatient gambling care. Psychiatric comorbidity, especially comorbid anxiety disorders, seems to be negatively associated with the course of GD within outpatient gambling care. Addressing psychiatric comorbidity within the treatment of GD and offering individualised help are required to meet the needs of this clientele.

JLJohanna Katharina Loy
Johanna Katharina Loy
NSNicki-Nils Seitz
Nicki-Nils Seitz
EBELIN KRISTIN BYE
ELIN KRISTIN BYE
PDPaul Dietze
Paul Dietze
CKCarolin Kilian
Carolin Kilian
LKLudwig Kraus
Ludwig Kraus
This paper explores trends in beverage preference in adolescents, identifies related regional differences, and examines cluster differences in key drinking measures. Data were obtained from the European School Survey Project on Alcohol and Other Drugs (ESPAD), covering 24 European countries between 1999 and 2019. Trends in the distribution of alcoholic beverages on the participants’ most recent drinking occasion were analysed by sex and country using fractional multinomial logit regression. Clusters of countries based on trends and predicted beverage proportions were compared regarding the prevalence of drinkers, mean alcohol volume and prevalence of heavy drinking. Four distinct clusters each among girls and boys emerged. Among girls, there was not one type of beverage that was preferred across clusters, but the proportion of cider/alcopops strongly increased over time in most clusters. Among boys, the proportion of beer decreased, but was dominant across time in all clusters. Only northern European countries formed a geographically defined region with the highest prevalence of heavy drinking and average alcohol volume in both genders. Adolescent beverage preferences are associated with mean alcohol volume and heavy drinking at a country-level. Future approaches to drinking cultures need to take subpopulations such as adolescents into account.

19 September 2023 in Addiction
Verified
Journal Article
Open access
LKLudwig Kraus
Ludwig Kraus
JLJohanna Katharina Loy
Johanna Katharina Loy
SOSally Olderbak
Sally Olderbak
BTBjörn Trolldal
Björn Trolldal
MRMats Ramstedt
Mats Ramstedt
JTJukka Törrönen
Jukka Törrönen
Background and aims: Sweden has experienced a substantial decrease in adolescent drinking over the past decades. Whether the reduction persists into early adulthood remains unclear. Using survey data, the present study aimed to determine whether reductions in indicators of alcohol use observed among adolescents remain in early adulthood and whether changes in alcohol intake are consistent among light/moderate and heavy drinkers.Design: Data from the Swedish monthly Alcohol Monitoring Survey (2001–20) were used to construct five 5‐year birth cohorts (1978–82, 1983–87, 1988–92, 1993–97 and 1998–2002).Setting: Sweden.Participants: A total of n = 52 847 respondents (48% females) aged 16 and 30 years were included in this study.Measurements: For both males and females, temporal changes in the prevalence of any drinking, the prevalence of heavy episodic drinking (HED) and total alcohol intake in the past 30 days in centilitres were analysed.Findings: The prevalence of any drinking in more recent cohorts remained low until young people came into their early (females) and mid‐ (males) 20s. Male cohorts differed in the prevalence of HED across age, with the later cohorts showing lower odds than earlier cohorts (odds ratios between 0.54 and 0.66). Among females, no systematic differences between cohorts across age could be observed. Later male birth cohorts in light/moderate drinkers had lower alcohol intake than earlier cohorts (correlation coefficients between −0.09 and −0.54). No statistically significant cohort effects were found for male heavy drinkers. Although differences in alcohol intake among females diminished as age increased, the cohorts did not differ systematically in their level of alcohol intake.Conclusions: In Sweden, the reduced uptake of drinking in adolescents appears to fade as people move into adulthood. Observed reductions in alcohol intake among light and moderate drinkers appear to persist into adulthood. More recent male cohorts show a lower prevalence rate of heavy episodic drinking.