1 plus 1 is more than 2: mental health problems, financial difficulties, and social exclusion in a cross-sectional study of 28,047 general-population adults.

BACKGROUND: Mental health problems and financial difficulties each increase the risk of social exclusion. However, few large studies representing a broad age range have investigated the combined social effect of having both difficulties. The purpose of this cross-sectional study was to examine associations of mental health problems, financial difficulties, and the combination of both with social exclusion. METHODS: This analysis was based on responses from 28,047 adults (age > 18 years) from the general population participating in The Norwegian Counties Public Health Survey 2019. Respondents answered questions about their financial situation, mental health problems, and social exclusion. Social exclusion was measured as a lack of social support, low participation in organized social activities, low participation in other activities, missing someone to be with, feeling excluded, and feeling isolated. Adjustments for sex and age were made in multivariable logistic regression analyses. RESULTS: Having mental health problems or financial difficulties was associated with various measures of social exclusion (odds ratios [ORs] with 95% confidence intervals [CIs]: 1.33 [1.23-1.43] to 12.63 [10.90-14.64]). However, the odds of social exclusion strongly increased for respondents who reported a combination of mental health problems and financial difficulties compared with those who did not report either (ORs [CIs]: 2.08 [1.90-2.27] to 29.46 [25.32-34.27]). CONCLUSIONS: Having the combination of mental health problems and financial difficulties is strongly associated with increased risk for social exclusion, far beyond the effect of either factor alone.

Patterns of unhealthy behaviours during adolescence and subsequent anxiety and depression in adulthood: a prospective register linkage study of the HUNT survey and health registries.

BACKGROUND: There is increasing need for prospective investigations in the preventing role of health-related behaviours on mental health problems. The aim of this study is to identify patterns of health-related behaviours in adolescence, and the association between the behavioural patterns and the subsequent diagnoses and/or drug treatment for anxiety and/or depression in adulthood. METHODS: This prospective study consisted of 13-19-year-old participants in the Trøndelag Health Study (Young-HUNT3) in 2006-2008 (n = 2061, 1205 females and 856 males) in Norway, who also participated in HUNT4 (2017-2019). Survey data on health-related behaviours in adolescence, including low level of physical activity, low consumption of wholegrain bread, fish, fruit, vegetables and high consumption of sugar-sweetened beverages and insomnia were linked on an individual level to prospective information on drug use and diagnosis in national health registries. The different patterns of health-related behaviours were identified through latent class analysis. Subsequent anxiety or depression was defined as at least one recording in either of three registries covering recorded diagnosis in primary and specialist healthcare, or dispensed prescription drugs during 2008-2019. Additionally, self-reported psychological distress measured in young adulthood was applied as a supplemental outcome measure. RESULTS: Four patterns of health-related behaviours were identified: high risk behaviours (class 1), moderate to high risk behaviours (class 2), low to moderate risk behaviours (class 3) and low risk behaviours (class 4). Adolescents in class 3 showed higher odds of subsequent diagnoses for anxiety and/or depression in primary and specialist healthcare compared to class 4 participants. In addition, both class 1 and class 4 participants had higher odds for self-reported psychological distress than those class 4 (OR = 1.56 and OR = 1.86, respectively). CONCLUSIONS: Our findings suggest that health-related behaviours are clustered among Norwegian adolescents. The patterns of unhealthy behaviours during adolescence only partly increased the risk of anxiety and depression in adulthood. Promoting healthy behaviours during adolescence may potentially reduce the burden of mental illness in adulthood, but further research is needed to clarify the nature of the relationships.

The significance of the social and material environment to place attachment and quality of life: findings from a large population-based health survey.

BACKGROUND: There is an international public health interest in sustainable environments that promote human wellbeing. An individual's bond to places, understood as place attachment (PA), is an important factor for quality of life (QoL). The material environment, such as access to nature (AtN), access to amenities (AtA), or noise, and the social environment, such as social support or loneliness, has the potential to influence PA. The aim of the present study was to explore the relationship between these factors and QoL. METHODS: The study relied on data from 28,047 adults from 30 municipalities in Southern Norway obtained from the Norwegian Counties Public Health Surveys in 2019. Latent regression analyses were used to examine the relationship between the material and social environmental factors and QoL, mediated by PA. RESULTS: We found a relationship between social and material environmental factors and PA. Higher AtN and AtA scores were related to an increase in PA, whereas higher perception of noise problems was related to decreased PA scores. When social environment factors were added to the model, they were even stronger predictors of PA and, in turn, QoL through mediated effects. We also found a strong positive association between PA and QoL (unstandardized ß = 0.88, 95% CI = 0.87-0.90, p < 0.001). The whole model explained 83% of the variance in PA and 65% of the variance in QoL. CONCLUSIONS: Taken together, the findings suggest the relevance of material and social environmental factors for PA and QoL. Therefore, research on public health and QoL should include place-sensitive variables.

Effects of a brief pre-admission telephone reminder on no-show and dropout rates in substance use disorder treatment: a quasi-experimental study.

BACKGROUND: Appointment no-show and early dropout from treatment represent major challenges in outpatient substance use disorder treatment, adversely affecting clinical outcomes and health care productivity. In this quasi-experimental study, we examined how a brief reminder intervention for new patients before their first appointment affected treatment participation and retention. No-shows (not attending any sessions) and dropouts (discontinuation of initiated treatment because of three consecutively missed appointments) were compared between a period with pre-admission telephone calls (intervention) and a period without such reminders (non-intervention). METHODS: Participants were all eligible patients (N = 262) admitted to a Norwegian specialist clinic for substance use disorder treatment. We used the Chi-square test for the no-show analysis. Of the eligible patients, 147 were included in a subsequent dropout analysis. We used the number of visits up to 10 appointments as a measure for time to event. Group differences were analyzed using a Kaplan-Meier plot and the log-rank test. To control for relevant sociodemographic variables, as well as substance use and mental distress severity, we used Cox regression. RESULTS: No-show rates did not differ between the two periods (12% for non-intervention vs. 14% for intervention; χ2 = 0.20, p = 0.653). Of those consenting to participate in the dropout analysis (n = 147), 28 (19%) discontinued treatment within the time frame of 10 appointments, with no differences between the two periods (log-rank test = 0.328, p = 0.567). Controlling for baseline characteristics did not alter this finding. In fact, of the registered covariates at baseline, only higher education level was associated with attrition, linked to a reduced risk for dropout (hazard ratio = 0.85, 95% CI = 0.74-0.98, p = 0.025). CONCLUSION: These findings do not provide support for the systematic use of a brief pre-admission telephone reminder in the current treatment setting. TRIAL REGISTRATION: The study was retrospectively registered 13 Jan 2021 at ClinicalTrials.gov, NCT04707599.

Risky Lives? Self-Directed Violence and Violence From Others Among Young People Not in Education, Employment, or Training (NEET).

Self-directed violence and violence from others comprise a major public health concern in youth. However, we lack knowledge about the prevalence of violent experiences among young people that are not in education, employment, or training (NEET), whether violent occurrences are similar among girls and boys, and whether violence differs between NEET youths and young students. This cross-sectional study compared the occurrences of self-directed violence (suicide attempts and self-harm) and exposure to violence from others (violent threats, beaten without visible marks, or injured due to violent events) between 96 NEET youth and 384 age- and sex-matched upper secondary school students (16-21 years). Suicide attempts were reported by 45.2% of NEET girls and 18.8% of schoolgirls (p < 0.001), but no significant difference was found between NEET boys (17.6%) and schoolboys (13.1%). Self-harm was reported by 78.9% of NEET girls and 33.9% of schoolgirls (p < 0.001). Self-harm was less prevalent among boys; it was reported by 34.6% of NEET boys and 21.8% of schoolboys (p = 0.056). A multivariable logistic regression analysis, adjusted for parental education, showed that, compared to schoolgirls, NEET girls had much higher odds ratios (ORs) for both self-directed violence and violence from others with OR ranging from 4.39; CI 1.96-9.85 to 7.68; CI 3.20-18.41. The risk of injury due to violent events was higher among NEET boys (OR: 3.23, 95%CI: 1.21-8.62) compared to schoolboys. Our findings highlighted the importance of including NEET individuals in studies on violence and emphasized the importance of psychosocial health services for young people marginalized from education and the labor market.

Infralow neurofeedback in the treatment of substance use disorders: a randomized controlled trial.

BACKGROUND: Infralow neurofeedback (ILF-NF) was recently developed as a subtype of traditional, frequency-based neurofeedback that targets cerebral rhythmic activity below 0.5 Hz and improves brain self-regulation. The efficacy of ILF-NF in the treatment of substance use disorder has not yet been evaluated, but clinical evidence suggests that it may prevent relapse by improving functioning in various life domains. The current study aimed to fill this research gap and extend empirical evidence related to this issue. METHODS: Ninety-three patients with substance use disorders at an outpatient unit in Norway were randomized to receive 20 sessions (30 minutes each) of ILF-NF training combined with treatment as usual (TAU), or TAU alone. The primary outcome was quality of life post-treatment as an overall measure of functioning. We analyzed between-group differences using Student t tests. RESULTS: We found no significant differences in quality of life between groups. We found similar nonsignificant results for most of the secondary outcome measures, including drug use, sleep, anxiety and depression. Compared to TAU, the ILF-NF + TAU group reported significantly lower restlessness scores post-treatment (mean difference -1.8, 95 % confidence interval -3.1 to -0.5; p = 0.006).Limitations: This study was limited by broad inclusion criteria and a lack of placebo control (sham neurofeedback treatment). CONCLUSION: ILF-NF offered limited additional benefit when combined with TAU, except in the area of restlessness. Future studies could further investigate the relationship between ILF-NF, restlessness and substance use in targeted subpopulations to illuminate relapse mechanisms. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov: NCT03356210.

Association between Self-Reported Childhood Difficulties and Obesity and Health-Related Behaviors in Adulthood-A Cross-Sectional Study among 28,047 Adults from the General Population.

The aim of the present study was to examine the associations between self-reported childhood difficulties, weight status, and lifestyle behaviors among a representative sample of Norwegian adults. This cross-sectional study included 28,047 adults (>18 years old) living in southern Norway. A self-report questionnaire was used to assess information about the overall quality of the respondents' childhood retrospectively in addition to current weight status and current lifestyle behaviors. Multivariable logistic regression models adjusted for gender, age, and educational level showed that evaluating childhood as difficult was associated with increased odds of obesity (OR: 1.29; 95% CI; 1.16-1.44) in adulthood. Moreover, a difficult childhood was associated with increased odds of unhealthy lifestyle behaviors in adulthood, including low consumption of fruit and berries (1.21; 1.09-1.34) and fish (1.43; 1.30-1.57), high consumption of sugar-sweetened beverages (1.30; 1.14-1.48), low level of physical activity (1.10; 1.01-1.21), smoking cigarettes (1.78; 1.61-1.97), and using smokeless tobacco (1.20; 1.07-1.36). Overall, results from the present study suggest that experiencing childhood as difficult is associated with an increased risk of obesity and a range of unhealthy lifestyle behaviors in adulthood. Thus, our findings highlight the importance of identifying and providing support to children in difficult life circumstances in addition to customized and targeted public health efforts in adulthood.

A mediational analysis of adverse experiences in childhood and quality of life in adulthood.

OBJECTIVES: This study examined associations of three prevalent adverse childhood experiences (ACEs) - parents' problematic alcohol use (PPAU), parental separation/divorce, and lack of support from a trusted adult-with adult quality of life (QoL), and potential mediators of associations. METHODS: Data were from a representative survey (N = 28,047) in Norway that assessed ACEs, QoL, and potential mediators: enduring perceptions of childhood hardships (Difficult Childhood Questionnaire; DCQ), current mental distress, and current social isolation. Latent regression analyses examined potential mediators. RESULTS: Each ACE was positively associated with perceptions of childhood as difficult (higher DCQ scores). In turn, ACEs were negatively associated with adult QoL through indirect effects. Lack of support from a trusted adult had the strongest negative association with adult QoL, compared to PPAU and parental separation/divorce. The association between the ACEs and QoL was explained through the mediators of mental distress and social isolation. CONCLUSIONS: Of the examined ACEs, lack of support from a trusted adult had the strongest negative impact on adult QoL. Adult support to vulnerable children could potentially ameliorate adult consequences of ACEs. In addition, adults reporting difficulties due to childhood adversities may benefit from therapeutic interventions that address both psychological distress and isolation.

Physical activity, sugar-sweetened beverages, whole grain bread and insomnia among adolescents and psychological distress in adulthood: prospective data from the population-based HUNT study.

BACKGROUND: In this study, we examined the relationship between low levels of physical activity, high consumption of sugar-sweetened beverages and low consumption of whole grain bread and experiencing insomnia in adolescence and psychological distress in young adults. METHODS: This prospective study was based on information retrieved from the Trøndelag Health Study (HUNT) in Norway and included adolescents (age 13-19) participating in Young-HUNT3 (2006-2008) and in HUNT4 (2017-2019) 11 years later (age 23-31). The study sample consisted of 2,230 participants (1,287 females and 943 males). The exposure variables collected in adolescence included self-reported physical activity, consumption of sugar-sweetened beverages and whole grain bread and insomnia, and psychological distress in young adulthood was used as an outcome variable. The relationship between lifestyle behaviours in adolescence and psychological distress in young adulthood was examined using multivariable logistic regression, adjusted for gender, age and psychological distress in adolescence and educational level in young adulthood. RESULTS: An increased odds of psychological distress was shown among young adults who reported low levels of physical activity (OR: 1.44, 95 % CI: 1.10-2.89), high consumption of sugar-sweetened beverages (OR: 1.49, 95 % CI: 1.12-1.98), low consumption of whole grain bread (OR: 1.35, 95 % CI: 1.04-1.77) and insomnia (OR: 1.69, 95 % CI: 1.23-2.33) in adolescence. In terms of absolute differences, unhealthy lifestyle behaviours increased the risk of psychological distress in young adulthood between 3.18 (95 % CI: 0.29-6.07) (low whole grain bread consumption) and 6.01 (95 % CI: 1.95-10.07) (insomnia) percentage points. CONCLUSIONS: Low levels of physical activity, high consumption of sugar-sweetened beverages and low consumption of whole grain bread and insomnia during adolescence were associated with psychological distress in young adulthood.

Associations between parental alcohol problems in childhood and adversities during childhood and later adulthood: a cross-sectional study of 28047 adults from the general population.

BACKGROUND: Adverse childhood experiences (ACE) are related to adverse physical and mental health outcomes. However, few larger studies based on a general population sample with age groups ranging from young adults to elderly have investigated whether parental alcohol problems increase the risk of offspring subjective reports of ACE both during childhood and current adult adversities. The purpose of this study was to examine the associations between parental alcohol problems and adversities during childhood and later in adulthood. METHODS: The 28,047 respondents were adults (> 18 years old) from the general population who participated in the Norwegian Counties Public Health Survey. The study had a cross-sectional design and included respondents' evaluations of childhood experiences and current adult adversities. The short version of the Children of Alcoholics Screening Test (CAST-6, cut-off ≥3) measured parental alcohol problems. Multivariable logistic regression was adjusted for gender, age, and education. RESULTS: Growing up with parental alcohol problems strongly increased the risk of experiencing a dysfunctional family environment during childhood (odds ratio [OR] 6.84; 95% confidence interval [CI] 6.36-7.36), perceiving childhood as difficult (OR 5.01; 95% CI 4.58-5.49), and reporting a lack of support from a trusted adult (OR 3.07; 95% CI 2.86-3.29). Parental alcohol problems were associated with a modestly increased risk of harmful alcohol use (OR 1.38; 95% CI 1.29-1.48), but the association with struggling with bad memories was strong (OR 4.56; 95% CI 4.17-4.98). CONCLUSIONS: Parental alcohol problems increased the risk of offspring experiencing adversities during both childhood and adulthood. Providing supportive services to these children and their families and addressing this issue as part of treatment is important to prevent alcohol related harm.

Lifestyle habits and depressive symptoms in Norwegian adolescents: a national cross-sectional study.

BACKGROUND: This study's purpose was to examine the association between a broad range of lifestyle habits and depressive symptoms in Norwegian adolescents. METHODS: This study was based on national, self-reported, cross-sectional data from the Ungdata Surveys, conducted in 2017-2019. The target group comprised 244,250 adolescents (ages 13-19). Binominal logistic regression was used to analyse the association between lifestyle habits (physical activity, social media use, gaming, dietary habits, smoking, smokeless tobacco, alcohol intoxication) and depressive symptoms. The outcome measure was defined as a high level of depressive symptoms (≥80th percentile). Separate analyses were performed for boys and girls, and all models were adjusted for perceived family economy, parental higher education and age. RESULTS: The odds of having depressive symptoms were significantly lower among those who reported being physically active at least 3 times per week (OR; boys: 0.81, girls: 0.83), used social media ≤3 h per day (OR; boys: 0.65, girls: 0.70), engaged in gaming ≤3 h per day (OR; boys: 0.72, girls: 0.77), were non-smokers (OR; boys: 0.74, girls: 0.72) and had not experienced alcohol intoxication during the previous 12 months (OR; boys: 0.66, girls: 0.67). Furthermore, the results indicated a significant inverse association between depressive symptoms and high consumption of a range of healthy food items and low consumption of unhealthy food and beverages among girls. Similar tendencies were found among boys (OR; 0.77-0.91). Finally, higher adherence to healthy lifestyle habits was associated significantly with lower odds of having depressive symptoms among both genders (OR; boys: 0.40, girls: 0.52). CONCLUSIONS: A healthier lifestyle was associated with lower odds of having depressive symptoms. Additional research is needed to confirm a possible causal relationship.

Adverse childhood experiences and impact on quality of life in adulthood: development and validation of a short difficult childhood questionnaire in a large population-based health survey.

PURPOSE: A short adverse childhood experiences (ACEs) measure is needed with non-intrusive items that include subjective evaluations of childhood. We validated a short Difficult Childhood Questionnaire (DCQ) that assesses ACEs using personal perceptions of events. METHODS: The study relied on 2019 data from a representative survey (N = 28,047) in Norway. We examined the DCQ's factor structure, internal consistency, and discriminant validity in a multi-group confirmatory factor analysis. As a group variable, we used whether the respondent had the ACE of parental alcohol use disorder (adult children of alcoholics; ACOA). To assess the DCQ's convergent validity, we used latent regression analysis with adulthood quality of life (QoL) as the outcome and mental distress and loneliness as potential mediators. RESULTS: The DCQ's latent mean was 0.86 (95% CI 0.82-0.90, p < 0.001) higher in the ACOA versus the non-ACOA group. The effect size suggested a large magnitude of this difference. The DCQ score was negatively associated with QoL and positively associated with mental distress and loneliness. For the score's QoL effect [- 0.84 (95% CI - 0.87 to - 0.80, p < 0.001)], - 0.80 was indirect, and - 0.04 was direct. Thus, most of the association of DCQ with QoL occurred via mediators. CONCLUSIONS: The results confirmed the DCQ's discriminant and convergent validity and highlight this tool as an empirically supported approach to assess ACEs. Because of its brevity and psychometric strengths, the DCQ is useful for research and likely suited to mental health treatment settings.

Associations between parenting and substance use, meal pattern and food choices: A cross-sectional survey of 13,269 Norwegian adolescents.

Identifying factors that affect adolescent lifestyle behaviors is essential in order to develop effective generic prevention approaches. This study aimed to investigate the association between parental monitoring, parental emotional support, parental-adolescent conflict and adolescent substance use, meal pattern and food choices. The study included data from 13,269 Norwegian adolescents aged 13-16 years collected in 2016. Multivariable logistic regression models adjusted for gender, age and parental education were applied. Results show that low parental monitoring was associated with increased substance use (Odds ratios (OR) ranging from 2.8; 95% Confidence intervals (CI) 2.1-3.6 to OR 3.8; 95% CI, 2.7-5.3) and irregular meal patterns (1.7; 1.3-2.1 to 2.6; 2.1-3.3), low fish intake (1.3;1.0-1.7), and high intake of sugar-sweetened beverages, diet beverages and energy drinks (1.4;1.1-1.7 to 2.1;1.6-2.8). Low parental emotional support was associated with increased substance use (1.8;1.5-2.1 to 2.5;1.9-3.2), irregular meal patterns (2.0; 1.8-2.3 to 2.1;1.9-2.3), low intake of vegetables, fruits and fish (1.3; 1.1-1.5 to 1.5; 1.3-1.7) and high intake of salty snacks, candy, cakes, sugar-sweetened beverages, diet beverages and energy drinks (1.4; 1.2-1.6 to 2.1;1.7-2.5). Finally, high parent-adolescent conflict was associated with increased substance use (2.3; 2.0-2.7 to 2.7; 2.3-3.1), irregular meal patterns (1.6 ;1.5-1.8 to 1.9;1.7-2.1), low intake of fruits and fish (1.3; 1.1-1.5 to 1.5; 1.3-1.7) and high intake of salty snacks, candy, cakes, sugar-sweetened beverages, diet beverages and energy drinks (1.5; 1.3-1.7 to 2.1; 1.8-2.5). Overall, parenting was associated with a range of lifestyle outcomes among adolescents. Family-strengthening interventions may have an impact on multiple public health domains.

Participation in organized sports is associated with decreased likelihood of unhealthy lifestyle habits in adolescents.

Adolescence is a pivotal time for investing in both present and future health. Thus, it is important to identify arenas for promoting positive adolescent health behaviors and preventing negative ones. The aim of this study was to investigate the associations between organized sports participation (OSP) and a broad range of lifestyle habits in Norwegian adolescents. A comprehensive survey was completed by 13 269 junior high and high school students in southern Norway. Multivariable binary logistic regression models, adjusted for gender, age, and parental education, were used to investigate the associations between OSP and adolescent substance use, dietary habits, physical activity level, passive vs active transportation, screen time, and sleep duration. Inverse associations were found between OSP and adolescent substance use (odds ratio 0.40 [95% confidence interval 0.30-0.52] to 0.68 [0.61-0.76]), irregular consumption of main meals (0.58 [0.53-0.63] to 0.78 [0.70-0.89]), high intake of unhealthy food and beverages (0.55 [0.47-0.65] to 0.86 [0.75-0.98]), low intake of healthy food items (0.57 [0.51-0.63] to 0.77 [0.70-0.84]), low physical activity level (0.15 [0.14-0.17]), high screen-based activity (0.61 [0.55-0.67]), passive vs active transportation (summer; 0.79 [0.72-0.86] and winter; 0.84 [0.77-0.92]), and short sleep duration, during both weekdays (0.57 [0.52-0.63]) and weekends (0.79 [0.69-0.89]). In conclusion, adolescents participating in organized sports had decreased odds for engaging in several unhealthy lifestyle habits compared with non-participants, indicating that organized sports may be a relevant setting for promoting healthy behaviors among adolescents. Future studies are, however, needed to confirm a possible causal relationship.

Intergenerational Hazardous Alcohol Use and Area Factors: The HUNT Study, Norway.

BACKGROUND: Alcohol use among adolescents has been found to be associated with parental alcohol abuse, but it's relation to more prevalent forms of hazardous drinking patterns among parents has been less explored. Few studies have included area factors when investigating alcohol use across generations. OBJECTIVES: The aims of this study were to investigate whether adolescent intoxication was associated with parental heavy episodic drinking (HED) and intoxication, area-level socioeconomic status (SES), and rates of area-level HED. METHODS: General Estimation Equations (GEE) was applied to analyze data from the Nord-Trøndelag Health Study (2006-08) including 2,306 adolescents. Adolescent alcohol use was defined by self-reported frequency of intoxication. Parental alcohol use was defined by parental self-reports of drinking five glasses of alcohol at one occasion (HED), whether they had been strongly intoxicated, and adolescent reports of seeing parents intoxicated. Area-level SES and HED were based on data from HUNT3 and Statistics Norway. RESULTS: Parental and offspring alcohol use were associated, although this varied to some extent with gender and exposures. The strongest associations were found between offspring intoxication and offspring reports of seeing their parent intoxicated (girls: OR 3.3, 95% CI 2.3-4.7; boys: OR 3.4, 95% CI 2.4-4.7). Intoxication was more common among girls, who lived in areas with a higher level of adult HED. Living in areas with higher SES was associated with less intoxication among adolescents. CONCLUSION: Intoxication in adolescence was associated with factors at both family and area level, which emphasize the need of both population and high risk preventive approaches.

Is high-risk use of intoxicants more common among adolescents who have seen their parents intoxicated?

BACKGROUND: Young people's alcohol consumption is related to their parents' alcohol consumption, but little focus has been placed on whether there is a connection with parental intoxication. The purpose of the study was to investigate whether the experience of seeing their parents intoxicated is associated with young people's alcohol consumption and experimenting with drugs in their teens. MATERIAL AND METHOD: The study is prospective and based on data from 2,399 teenagers who took part in the Ung-HUNT 1 study in 1995-1997 and the Ung-HUNT 2 study in 2000-2001. Self-reported questionnaire data and analysis by means of logistic regression, stratified by gender, were used. RESULTS: Having been drunk > 10 times was associated with having seen their parents intoxicated among boys (OR 3.7; 95% CI 2.7-5.1 and girls (OR 2.0; 1.5-2.6). Drinking alcohol weekly or more frequently was associated with parental intoxication among boys (OR 2.2; 1.6-3.0), but not girls unless they had seen their parents drunk many times (OR 2.4; 1.1-5.2). Experimenting with drugs was associated with parental intoxication among both boys (OR 2.6; 1.7-3.9) and girls (OR 1.6; 1.1-2.2). INTERPRETATION: Repeated intoxication, frequent alcohol consumption and experimenting with drugs by teenagers were associated with seeing their parents intoxicated. There are other explanatory factors for which the study was unable to control, and interpretation of the results should take this into account.