Does a Change Over All Equal a Change in All? Testing for Polarized Alcohol Use Within and Across Socio-Economic Groups in Germany

[Age-specific trends in risky drinking in Germany: collectivity or polarisation?]

Einleitung

Nach der Collectivity-of-Drinking-Cultures-Theorie von Skog finden Veränderungen des Alkoholkonsums in allen Bevölkerungsgruppen und -schichten als parallele Verschiebungen statt. Ziele des vorliegenden Beitrags sind (1) die Darstellung zeitlicher Trends des riskanten Konsums und des episodischen Rauschtrinkens nach Altersgruppen und Geschlecht und (2) die Prüfung, ob die Trends in allen Altersgruppen parallel verlaufen („Kollektivität“) oder zwischen Altersgruppen divergieren („Polarisierung“).

Methoden

Datengrundlage sind 9 Erhebungen des Epidemiologischen Suchtsurveys (ESA) zwischen 1995 und 2018. Als Schwellenwert für riskanten Alkoholkonsum wurde ein täglicher Konsum von mehr als 12 g Reinalkohol bei Frauen beziehungsweise 24 g bei Männern herangezogen. Episodisches Rauschtrinken wurde als Konsum von 5 oder mehr Gläsern Alkohol (ca. 70 g Reinalkohol) an mindestens einem Tag in den letzten 30 Tagen definiert. Lineare Regressionen wurden für die Vorhersage des zeitlichen Effekts auf riskanten Konsum bzw. Rauschkonsum nach Altersgruppen (18–29, 30–39, 40–49 und 50–59 Jahre) und Geschlecht getrennt berechnet und auf Unterschiede geprüft.

Ergebnisse

Die Entwicklungen riskanten Alkoholkonsums nach Altersgruppen verlaufen bei Männern weitgehend parallel, bei Frauen gegenläufig. Die Trends des episodischen Rauschtrinken weisen bei beiden Geschlechtern keine parallele Entwicklung auf: Während in der jüngsten und ältesten Altersgruppe die Prävalenz im Zeitverlauf anstieg, sank sie in den übrigen Altersgruppen.

Diskussion

Vor dem Hintergrund einer generellen Abnahme spricht die Zunahme in den Trends risikoreichen Alkoholkonsums in bestimmten Gruppen für einen Ausbau verhaltenspräventiver Maßnahmen. Zur Fortsetzung der positiven Entwicklung und der Vermeidung einer Trendumkehr sollten zudem auf die Gesamtbevölkerung ausgerichtete Präventionsanstrengungen intensiviert werden, beispielsweise durch Erhöhung der Alkoholsteuer oder Reduktion der Verfügbarkeit von Alkohol.

Zusatzmaterial online

Zusätzliche Informationen sind in der Online-Version dieses Artikels (10.1007/s00103-021-03328-7) enthalten.

Decline in alcohol consumption in Russia: Collectivity or polarisation?

INTRODUCTION

Sales and survey data have shown a decline in alcohol consumption in Russia since 2007. This study examines whether this decline is consistent across lighter and heavier drinkers in line with the theory of the collectivity of drinking cultures.

METHODS

Data were collected through annual nationally representative surveys conducted between 2006 and 2018 of 33 109 individuals aged 18-85 years. We estimated generalised linear regression with Gamma distribution and used log alcohol volume consumed during the previous 30 days as the dependent variable for five percentile groups: heavy drinkers (95th), near heavy drinkers (90th), moderate drinkers (80th), light drinkers (60th for men and 70th for women) and non-drinkers. Dummy variables for years, percentile groups and their interactions were used as independent variables. The controls were age, education, income, body weight, marital status, household demographic structure, residence, ethnicity and regional climate.

RESULTS

Reductions in alcohol consumption were observed in all percentiles, but the scale of change was proportionally smaller among heavier drinkers than among lighter drinkers. However, consumption fell by a smaller amount among lighter drinkers than among heavier drinkers. Results of the regression analysis fit with the descriptive statistics. Interactions between the time period and the percentile groups were significant after 2010. Trends were similar for both sexes.

DISCUSSION AND CONCLUSIONS

Downward trends across percentiles were in the same direction but the magnitude of change varied. Obtained evidence fails to support a polarisation and points towards soft collectivity hypothesis in the reduction in drinking in Russia.

Is the theory of collectivity of drinking cultures valid across educational groups?

Introduction

To explore whether Skog's theory of collectivity of drinking cultures is valid across groups with different socioeconomic position (SEP).

Methods

Individual‐level information on alcohol consumption and SEP for the years 2004–2014 were retrieved from the Monitoring Project; a nationally representative monthly alcohol use survey. The analytical sample consisted of 162 369 respondents aged 25–79 years. SEP was measured by education level. Alcohol use was measured by yearly volume of consumption and frequency of heavy episodic drinking (HED). Respondents were divided into six SEP‐groups based on their education level and sex. Mean yearly volume consumption and prevalence of monthly HED was calculated for each group and graphically plotted against the overall mean volume of consumption.

Results

The yearly changes in overall mean consumption during the study period reflected a collective shift in drinking across groups with basic, intermediate and high education. There were also indications that changes in overall mean consumption reflected collective shifts in the prevalence of HED across the SEP‐groups. Moreover, while the magnitude of the associations for both average volume and HED differed somewhat in strength across the SEP‐groups, they were clearly in the same, positive, direction.

Discussion and Conclusions

Our findings add support for including a socioeconomic dimension to Skog's theory of collectivity of drinking cultures. Future studies should replicate our analyses on cases and periods with more tangible changes in the price and availability of alcohol.

The Decline in Alcohol Consumption in Russia from 2006 to 2017: Do Birth Cohorts Matter?

AIM

Previous studies on youth drinking showed opposite trends for high-income and low-income countries. In Russia, a recent decline was observed in the prevalence of alcohol use, particularly among younger cohorts. This study aims at disentangling age and birth cohort effects to better understand the dynamics of abstinence and the volume of alcohol consumption.

METHODS

Data were collected from annual nationally representative panel surveys from 2006 to 2017. Data included 34,514 individuals aged 14-80. We estimated mixed-effects binary-choice models for percentage of abstainers and mixed-effects linear models with Heckman correction for alcohol volume. Integer variables of age and age-squared were used. Period was defined with a dummy variable using 2012 as the dividing line associated with a new Russian alcohol policy. Birth cohorts were defined as 13 groups from 1930-1939 to 2000-2003. Controls were per capita income, education, marital status, composition of households, body weight, ethnicity, residence type, regional per capita income and regional climate.

RESULTS

In both genders, percentage of abstainers increased and drinking volumes declined. Age for both genders showed u-shaped trend for abstinence and inverse u-shaped trend for alcohol volume. Controlling for age effects, cohorts born after 1990 demonstrated the strongest increase in abstinence for both genders and the strongest decrease in alcohol volume for males. The period of 2012-2017 had the effect of increasing the abstinence and decreasing the alcohol volume.

CONCLUSION

Downward trend in alcohol consumption in Russia is partially attributable to increased abstinence and reduced alcohol volume among younger cohorts.

The collectivity of British alcohol consumption trends across different temporal processes: a quantile age-period-cohort analysis

BACKGROUND AND AIMS

UK alcohol consumption per capita has fallen by 18% since 2004, while the alcohol-specific death rate has risen by 6%. Inconsistent consumption trends across the population may explain this. Drawing on the theory of the collectivity of drinking cultures and age-period-cohort analyses, we tested whether consumption trends are consistent across lighter and heavier drinkers for three temporal processes: (i) the life-course, (ii) calendar time and (iii) successive birth cohorts.

DESIGN

Sex-specific quantile age-period-cohort regressions using repeat cross-sectional survey data.

SETTING

Great Britain, 1984-2011.

PARTICIPANTS

Adult (18+) drinkers responding to 17 waves of the General Lifestyle Survey (total n = 175 986).

MEASUREMENTS

Dependent variables: the 10th, 25th, 50th, 75th, 90th, 95th and 99th quantiles of the logged weekly alcohol consumption distribution (excluding abstainers).

INDEPENDENT VARIABLES

seven age groups (18-24, 25-34… 65-74, 75+ years), five time-periods (1984-88… 2002-06, 2008-11) and 16 five-year birth cohorts (1915-19… 1990-94). Additional control variables: ethnicity and UK country.

FINDINGS

Within age, period and cohort trends, changes in consumption were not consistently in the same direction at different quantiles of the consumption distribution. When they were, the scale of change sometimes differed between quantiles. For example, between 1996-2000 and 2008-2011, consumption among women decreased by 18% [95% confidence interval (CI) = -32 to -2%] at the 10th quantile but increased by 11% (95% CI = 2-21%) at the median and by 28% (95% CI = 19-38%) at the 99th quantile, implying that consumption fell among lighter drinkers and rose among heavier drinkers. This type of polarized trend also occurred between 1984-88 and 1996-2000 for men and women. Age trends showed collectivity, but cohort trends showed a mixture of collectivity and polarization.

CONCLUSIONS

Countervailing alcohol consumption and alcohol-related harm trends in the United Kingdom may be explained by lighter and heavier drinkers having different period and cohort trends, as well as by the presence of cohort trends that mean consumption may rise in some age groups while falling in others.

Drinking trajectories of at-risk groups: Does the theory of the collectivity of drinking apply?

INTRODUCTION AND AIMS

Alcohol consumption among Swedish adolescents has halved during the last decade. We aim to: (i) investigate whether the overall decrease in drinking may conceal an underlying heterogeneity in drinking trajectories across at-risk groups that differ with respect to risk for drinking and; (ii) assess to what degree alcohol-related harm has responded to this decrease.

DESIGN AND METHODS

Data were obtained from the nationally representative annual school survey of alcohol and drug habits among Swedish ninth-grade students covering the period 2000-2012 (n ≈ 5000/year). Respondents were divided into five at-risk groups ranging from low to high based on their relative ranking on a risk scale for drinking. Alcohol consumption was measured by beverage-specific quantity and frequency items summarised into a measure of overall drinking in litres of 100% alcohol per year. Alcohol-related harm was measured by eight items asking about whether the respondent had experienced various alcohol-related negative consequences.

RESULTS

Drinking and alcohol-related harm decreased in all five at-risk groups. There was a marked relation between the overall consumption and the mean consumption in each of the five at-risk groups. Self-reported alcohol-related harm decreased during the study period to an extent that was expected from the decrease in alcohol consumption.

DISCUSSION AND CONCLUSIONS

Alcohol consumption among Swedish youth has declined in five groups that were delineated based on their relative ranking on a risk factor index. The findings are consistent with Skog's theory of the collectivity of drinking behaviour. [Norström T, Raninen J. Drinking trajectories of at-risk groups: Does the theory of the collectivity of drinking apply?.