Prevalence and correlates of tattooing in Norway: A large‐scale cross‐sectional study

To our knowledge, no previous large‐scale study has examined the prevalences and correlates of having only easily concealed tattoos, or readily visible tattoos. We conducted an exploratory online survey in Norway asking 15,654 (6,151 females) persons aged 16–91 (m = 33.65 ± 12.27) about various demographic, sports, substance use, mental health, personality, and tattooing questions. The estimated prevalence of tattooing was 20.8% (females: 23.8%, males: 17.9%), of which 13.3% had readily visible tattoos. Results of multivariate logistic regression analysis indicated that females, being older than 19 years, higher body mass index, lifetime anabolic‐androgenic steroid use (AAS), and higher scores on extraversion were associated with higher odds of having a tattoo. Factors associated with higher odds of having only easily concealed tattoos were being 40–49 (versus those ≤ 19) years old, being only high school or tertiary (versus being only primary school) educated, often or not (versus always) exercising in a gymnasium, and high scores on agreeableness. Females, and higher scores on extraversion and neuroticism were associated with higher odds of having at least one readily visible tattoo. Our findings delineate the significance of demographic variables, gymnasium exercise, AAS, and personality in the practice of tattooing.     

Problematic video game use: estimated prevalence and associations with mental and physical health

A nationwide survey was conducted to investigate the prevalence of video game addiction and problematic video game use and their association with physical and mental health. An initial sample comprising 2,500 individuals was randomly selected from the Norwegian National Registry. A total of 816 (34.0 percent) individuals completed and returned the questionnaire. The majority (56.3 percent) of respondents used video games on a regular basis. The prevalence of video game addiction was estimated to be 0.6 percent, with problematic use of video games reported by 4.1 percent of the sample. Gender (male) and age group (young) were strong predictors for problematic use of video games. A higher proportion of high frequency compared with low frequency players preferred massively multiplayer online role-playing games, although the majority of high frequency players preferred other game types. Problematic use of video games was associated with lower scores on life satisfaction and with elevated levels of anxiety and depression. Video game use was not associated with reported amount of physical exercise.     

The Effectiveness of Cognitive and Behavioural Treatment of Chronic Pain in the Elderly: A Quantitative Review

This study provides a meta-analytic review of cognitive and behavioural interventions for chronic pain in the elderly, focusing on treatment effectiveness. Included in the analysis are studies in which a comparison was made either to a control condition or to pre-treatment. A total of 12 outcome studies published or reported between January 1975 and March 2008, were identified involving participants 60 years and above and providing 16 separate treatment interventions. The analysis indicated that cognitive and behavioural interventions were effective on self-reported pain experience, yielding an overall effect size of 0.47. However, there were no significant effects of cognitive and behavioural treatment on symptoms of depression, physical functioning and medication use. Methodological issues concerning design, outcome measures and treatment are discussed and recommendations for future studies are outlined.     

Predicting Transformational Leadership in Naval Cadets: Effects of Personality Hardiness and Training

The present study investigated whether personality hardiness predicts peer ratings of leadership style in Navy officer cadets. Cadets ( n  = 71) completed the Dispositional Resiliency (hardiness) Scale, and later rated their peers using the Multifactor Leadership Questionnaire (full range of leadership model). Results show the hardy–commitment facet predicted peer ratings of all leadership styles covered in the model, both before and after and intensive military exercise. The challenge facet was a positive predictor of transformational and transactional leadership and was negatively related to passive-avoidant leadership. Transformational leadership predicted leader performance, as indexed by military development grades; and a partial mediation effect was found for hardiness on the relation between transformational leadership and leader performance.     

Trends in timing of sleep in the general population of Norway: 1980 to 20001

The aim of the current study was to examine whether the timing of sleep have changed over the last two decades. As part of a general survey of activities throughout the 24-hr. cycle, collected in 1980, 1990, and 2000 by Statistics Norway, information on sleep timing was obtained for every 15-min. interval for 1 wk. All three samples were representative of Norwegians. The age span was from 16 to 74 years. Timing of sleep was significantly delayed in 2000 compared to 1990 and especially so in 1980, but with no change in total amount of sleep. From 1980 to 2000, there was an increasing discrepancy in sleep or wake timing between weekdays and weekends. The current analyses show that people sleep as much as before but do so at different times. The increased discrepancy between weekdays and weekends indicates that overall sleep habits are poorer now than previously.     

A self-help book is better than sleep hygiene advice for insomnia: a randomized controlled comparative study

The objective was to compare the effects of two types of written material for insomnia in a randomized trial with follow-up after three months. Insomniacs were recruited through newspaper advertisements to a web-based survey with validated questionnaires about sleep, anxiety, depression, and use of sleep medications. A self-help book focusing on cognitive behavioral therapy for insomnia was compared to standard sleep hygiene advice; 77 and 78 participants were randomized to self-help book or sleep hygiene advice, respectively. The response rate was 81.9%. The self-help book gave significantly better scores on the sleep questionnaires compared to sleep hygiene advice. The proportion using sleep medications was reduced in the self-help book group, whereas it was increased in the sleep hygiene group. Compared to pre-treatment, the self-help book improved scores on the sleep (effect sizes 0.61-0.62) and depression (effect size 0.18) scales, whereas the sleep hygiene advice improved scores on some sleep scales (effect sizes 0.24-0.28), but worsened another (effect size -0.36). In addition, sleep hygiene advice increased the number of days per week where they took sleep medications (effect size -0.50). To conclude, in this randomized controlled trial, the self-help book improved sleep and reduced the proportion using sleep medications compared to sleep hygiene advice. The self-help book is an efficient low-threshold intervention, which is cheap and easily available for patients suffering from insomnia. Sleep hygiene advice also improved sleep at follow-up, but increased sleep medication use. Thus, caution is warranted when sleep hygiene advice are given as a single treatment.     

Bright light treatment has limited effect in subjects over 55 years with mild early morning awakening

31 subjects, age 55 yr. or older, suffering from mild early morning awakening were randomized to either a bright light (10,000 lux) or to a red dim light placebo condition (200 lux). Light exposure took place in the evening in the patients' homes, 60 to 30 min. before bedtime and lasted for 3 wk. The subjects kept a sleep diary for 2 wk. and wore an actigraph for 1 wk. both before treatment and at post-treatment. Of the eight sleep diary outcome variables, significant effects that could be attributed to the light treatment were only detected for time spent in bed after final morning awakening. None of the six actigraph outcome variables yielded any significant effect of the light therapy. Explanations for the limited therapeutic effects of bright light treatment obtained in the present study are discussed, such as the criteria defining early morning awakening, the selection procedure, problems with compliance, age of the sample, and the dose of light. The lack of an objective circadian marker in this study could represent a problem concerning the timing of the light exposure. Despite the limited success of bright light therapy in this study, bright light therapy should still be considered as a treatment option for early morning awakening.     

A Norwegian adaptation of the Penn State Worry Questionnaire: factor structure, reliability, validity and norms

A Norwegian version of the Penn State Worry Questionnaire (PSWQ) was administered to 304 undergraduate students together with the Beck Depression Inventory (BDI), the State-Trait Anxiety Inventory (STAI) and the Maudsley Obsessive Compulsive Inventory (MOCI). The PSWQ was also administered to a community sample comprising 879 subjects, together with the Beck Anxiety Inventory (BAI), the Beck Depression Inventory II (BDI II) and the White Bear Suppression Inventory (WBSI). Structural equation modeling showed that a three-factor solution of the PSWQ gave the best goodness of fit. The Norwegian version of the PSWQ demonstrated adequate psychometric properties in terms of reliability and validity in both samples. Females scored higher than males on PSWQ.     

Prevalence and correlates of gambling among 16 to 19-year-old adolescents in Norway

There is evidence that young people are at high risk of developing gambling disorders. The prevalence and correlates of gambling among youth therefore merit closer study. During spring 2004, a sample of 1,351 boys and girls (aged 16–19 years) from 151 high-school classes (clusters) participated in an internet survey about gambling. The response rate was 69.8%. The instruments used in the survey were the Hospital Anxiety and Depression Scale, the Alcohol Use Disorders Identification Test and the Massachusetts Adolescent Gambling Screen, in addition to questions about demography. Controlling for the design effect, the estimated prevalence rate was 2.5% for pathological gambling and 1.9% for problem gambling. In all, 7.3% of the boys and 0.6% of the girls fulfilled the criteria for pathological or problem gambling. The results of item analysis of the DSM-IV subscale of MAGS provide support for differential item functioning between boys and girls. A multiple logistic regression analysis revealed that gender (male: OR = 9.09), depression (OR = 9.23), alcohol abuse (OR = 3.62), and dissociation (OR = 1.96) were related to problem and pathological gambling. These results support the view that gambling disorders are best understood as part of an addictive behavior spectrum ( Jacobs, 2000 ).     

Sleep deprivation and hallucinations. A qualitative study of military personnel

Much anecdotal evidence suggests that sleep deprivation not only impairs performance, but also brings about other extraordinary effects like hallucinations. However, knowledge about how sleep deprivation may trigger hallucinations is limited. To qualitatively describe hallucinatory experiences during sleep deprivation 12 male military officers from the Norwegian Armed Forces who all had experienced at least one sleep loss-induced hallucinatory experience were recruited. Data were collected and analyzed by semi-structured interviews and thematic analysis. This resulted in the identification of three distinct main themes: (1) Modalities, (2) circumstances/triggers and (3) reactions to hallucinations. Hallucinations were experienced in several modalities (visual, auditory and multi-modality), although visual hallucinations seemed to dominate. Typical reported circumstances/triggers were sleep loss, physical exhaustion, time-of-day, low calorie intake, mental exhaustion and lack of external stimuli (low sensory and social input, boring situations, and monotonous activity). Negative emotions were dominant during the hallucinatory episodes. Often some reasoning and checking on behalf of the officers were necessary to differentiate between real percepts and hallucinations. In some cases the hallucinations caused erroneous actions. Retrospectively, most officers viewed their hallucinatory experiences in light of positive emotions and several emphasized having learned something from them. The results are discussed in relation to the existing literature and suggestions for future studies are outlined.