Background/Objective: The most common used instrument to measure optimism, both in psychological and medical research, is the Life Orientation Test- Revised (LOT-R). A multi-countries study using the future item from the LOT-R, found that level of optimism varied between countries. The provision of population-based norms is necessary, since norms enable the application of the LOT-R in individual diagnosis to compare individuals or special patient groups’ scores with reference data. Method: A representative population based survey was conducted in 2014-2015. Norwegian aged 18–94 years (N = 1,792) completed questionnaires assessing sociodemographic, optimism and health and quality of life. Results: The mean age was 53.2 (SD = 16.6) and 53% were women. Mean LOT-R score was 17.2 (SD 3.0). There were marginal age and no gender differences. Although optimism was associated with sociodemographic variables, these were considered negligible due to small effect size. Norm data are given for the entire population. Optimism was associated with better health and quality of life. Conclusions: This study provides age and gender specific norm values from a representative sample of the Norwegian population. The normative data may be used in comparisons of optimism between individuals or between different samples of patients or sub-groups of people.

Purpose Breast cancer survivors may experience pain, fatigue, or psychological distress as a result of the treatment. These symptoms may co-occur and form a cluster. However little is known about symptom clusters (SCs) in long-term breast cancer survivors. This study aimed to identify subgroups of breast cancer survivors with the SC of pain, fatigue, and psychological distress, and to examine sociodemographic and clinical characteristics associated with this SC. Methods Data were obtained from a nationwide survey of breast cancer survivors (N = 834). Exhaustive enumeration of possible combination of the three binary variables (pain, fatigue, psychological distress) was conducted. They were identified using the recommended threshold for the Hospital Anxiety and Depression Scale, the Fatigue Questionnaire, and a score of one or more on a numeric rating scale for pain. The SC was defined to include all the three variables, all other combinations were defined as no SC. Logistic regression analyses were conducted to examine the association between sociodemographic and clinical variables and the SC. Results Of the 834 survivors, 13% had the SC. Younger age (OR 2.3, 95% CI 1.3-4.1, p = 0.003), lymphedema (OR 1.9, 95% CI 1.1-3.2, p = 0.02), working part-time (OR 2.9, 95% CI 1.6-5.3, p < 0.001), or being disabled (OR 4.1, 95% CI 2.2-7.8, p < 0.001) were all associated with the SC. Conclusion Thirteen percent of the survivors experienced the SC. It appears that premenstrual women are at greater risk, than postmenopausal women. Having this SC might have an impact on the survivors' ability to work.

Male gender and being employed were related to higher GSE among persons in the general population in Norway, and these associations were stronger among persons of younger age. The findings are considered fairly representative for the Norwegian population.

Background It has been suggested that countries with more resources and better healthcare have populations with a higher risk of post-traumatic stress disorder (PTSD). Norway is a high-income country with good public healthcare. Aims To examine lifetime trauma exposure and the point prevalence of PTSD in the general Norwegian population. Method A survey was administered to a national probability sample of 5500 adults (aged ≥18 years). Of 4961 eligible individuals, 1792 responded (36%). Responders and non-responders did not differ significantly in age, gender or urban versus rural residence. Trauma exposure was measured using the Life Events Checklist for the DSM-5. PTSD was measured with the PTSD Checklist for the DSM-5. We used the DSM-5 diagnostic guidelines to categorise participants as fulfilling the PTSD symptom criteria or not. Results At least one serious lifetime event was reported by 85% of men and 86% of women. The most common event categories were transportation accident and life-threatening illness or injury. The point prevalence of PTSD was 3.8% for men and 8.5% for women. The most common events causing PTSD were sexual and physical assaults, life-threatening illness or injury, and sudden violent deaths. Risk of PTSD increased proportionally with the number of event categories experienced. Conclusions High estimates of serious life events and correspondingly high rates of PTSD in the Norwegian population support the paradox that countries with more resources and better healthcare have higher risk of PTSD. Possible explanations are high expectations for a risk-free life and high attention to potential harmful mental health effects of serious life events. Declaration of interest None.

The COVID-19 outbreak and the sudden lockdown of society in March 2020 had a large impact on people’s daily life and gave rise to concerns for the mental health in the general population. The aim of the study was to examine post-traumatic stress reactions related to the COVID-19 pandemic, the prevalence of symptom-defined post-traumatic stress disorder (PTSD), and factors associated with post-traumatic stress in the Norwegian population during the early stages of the COVID-19 outbreak. A survey was administered via social media channels, to which a sample of 4527 adults (≥18 years) responded. Symptom-defined PTSD was measured with the PTSD Checklist for the DSM-5. The items were specifically linked to the COVID-19 pandemic. We used the DSM-5 diagnostic guidelines to categorize participants as fulfilling the PTSD symptom criteria or not. Associations with PTSD were examined with single and multiple logistic regression analyses. The prevalence of symptom-defined PTSD was 12.5% for men and 19.5% for women. PTSD was associated with lower age, female gender, lack of social support, and a range of pandemic-related variables such as economic concerns, expecting economic loss, having been in quarantine or isolation, being at high risk for complications from COVID-19 infection, and having concern for family and close friends. In conclusion, post-traumatic stress reactions appear to be common in the Norwegian population in the early stages of the COVID-19 outbreak. Concerns about finances, health, and family and friends seem to matter.

Our results show that preoperative pain is a predominant predictor of future pain. This implies that patients presenting with a chronic pain condition prior to surgery should be assessed thoroughly preoperatively and have an individually tailored analgesic regimen.

BackgroundMulti-item rating scales for depression informs about the level of depression, but does not allow individuals to state by self-evaluation whether they feel depressed or not. The insider perspective on depression is rarely assessed. This study investigated the prevalence of self-diagnosed depression in the Norwegian general population, and associations with sociodemographic and psychological factors.MethodsAs part of a national survey, the General Self-Efficacy Scale, the Life Orientation Test-Revised, a short version of the Eysenck Personality Questionnaire and a one-item measure of self-diagnosed depression was administered to 5.500 persons in the general Norwegian population. Of the 4961 eligible participants ≥ 18 years of age, 1.787 (response rate 36%) participated in the survey, and 1.684 of these had valid scores on the relevant scales. The associations between sociodemographic factors and self-diagnosed depression were examined using univariate and multivariate logistic regression analyses.ResultsOne hundred and thirty-six participants (8.1%) reported depression during the preceding month. When adjusting for sociodemographic and psychological variables, higher age (OR = 0.82), being in work (OR = 0.57), and higher levels of general self-efficacy (OR = 0.67) and optimism (OR = 0.52) were associated with lower risk of self-diagnosed depression, whereas higher levels of neuroticism (OR = 1.97) was associated with higher risk.ConclusionsThe prevalence of self-diagnosed depression in the adult Norwegian population was higher for women than for men. Higher age, being in work and having higher levels of psychological resources appear to reduce the risk of self-diagnosed depression, whereas neuroticism increases the risk.

Objective We investigated the prevalence of anxiety and depression at diagnosis and at 1, 3, and 5 years after breast cancer diagnosis. We hypothesized that a low level of optimism (pessimism) at diagnosis could predict change in anxiety and depression 5 years later. Methods Three hundred sixty‐seven women with operable breast cancer were included, and data were collected at all five‐time points for 293 of these. Anxiety and depression were measured using the Hospital Anxiety and Depression Scale (HADS). Dispositional optimism/pessimism was measured using the Life Orientation Test–Revised (LOT–R). Frequency analysis was used to determine the prevalence of anxiety and depression. Logistic regression was used to examine dispositional optimism/pessimism as a predictor of change in anxiety and depression 5 years after diagnosis. Results The prevalence rates of anxiety and depression 5 years after diagnosis were 26.3% and 9.6%, respectively. Predictors of change in anxiety 5 years after diagnosis were pessimism (odds ratio [OR] = 0.82; 95% confidence interval [CI]: 0.76‐0.89, P < .001); younger age (OR = 0.96; 95% CI: 0.93‐0.99, P = .005); and anxiety at diagnosis (OR = 2.41; 95% CI: 1.33‐4.37, P = .004). Predictors of change in depression 5 years after diagnosis were pessimism (OR = 0.84; 95% CI: 0.77‐0.94, P < .001) and comorbidity (OR = 1.51, 95% CI: 1.10‐2.06, P = 0.01). Conclusion Anxiety and depression did not decrease after the first postoperative year. Pessimism was a predictor of change in both anxiety and depression 5 years after breast cancer diagnosis.