Exploring the dynamics of COVID-19 in a Greenlandic cohort: Mild acute illness and moderate risk of long COVID.

Objectives: This study aimed to explore how the Greenlandic population experienced the course of both acute and long-term COVID-19. It was motivated by the unique epidemiologic situation in Greenland, with delayed community transmission of SARS-CoV-2 relative to the rest of the world. Methods: In a survey among 310 Greenlandic adults, we assessed the association between previous SARS-CoV-2 infection and overall health outcomes by administering three repeated questionnaires over 12 months after infection, with a response rate of 41% at the 12-month follow-up. The study included 128 individuals with confirmed SARS-CoV-2 infection from January/February 2022 and 182 test-negative controls. Participants were recruited through personal approaches, phone calls, and social media platforms. Results: A total of 53.7% of 162 participants who were test-positive recovered within 4 weeks and 2.5% were hospitalized due to SARS-CoV-2. The most common symptoms were fatigue and signs of mild upper respiratory tract infection. Less than 5% reported sick leave above 2 weeks after infection. Compared with participants who were test-negative, there was an increased risk of reporting fatigue (risk differences 25.4%, 95% confidence interval 8.8-44.0) and mental exhaustion (risk differences 23.4%, 95% confidence interval 4.8-42.2) up to 12 months after a positive test. Conclusions: Our results indicate that during a period dominated by the Omicron variant, Greenlanders experienced a mild acute course of COVID-19, with quick recovery, minimizing the impact on sick leave. Long COVID may be present in Greenlanders, with symptoms persisting up to 12 months after infection. However, it is important to consider the small sample size and modest response rate as limitations when interpreting the results.

Revisiting the hydrogenation behavior of NdGa and its hydride phases.

NdGa hydride and deuteride phases were prepared from high-quality NdGa samples and their structures characterized by powder and single-crystal X-ray diffraction and neutron powder diffraction. NdGa with the orthorhombic CrB-type structure absorbs hydrogen at hydrogen pressures ≤ 1 bar until reaching the composition NdGaH(D)1.1, which maintains a CrB-type structure. At elevated hydrogen pressure additional hydrogen is absorbed and the maximum composition recovered under standard temperature and pressure conditions is NdGaH(D)1.6 with the Cmcm LaGaH1.66-type structure. This structure is a threefold superstructure with respect to the CrB-type structure. The hydrogen atoms are ordered and distributed on three fully occupied Wyckoff positions corresponding to tetrahedral (4c, 8g) and trigonal-bipyramidal (8g) voids in the parent structure. The threefold superstructure is maintained in the H-deficient phases NaGaH(D)x until 1.6 ≥ x ≥ 1.2. At lower H concentrations, coinciding with the composition of the hydride obtained from hydrogenation at atmospheric pressure, the unit cell of the CrB-type structure is resumed. This phase can also display H deficiency, NdGaH(D)y (1.1 ≥ y ≥ 0.9), with H(D) exclusively situated in partially empty tetrahedral voids. The phase boundary between the threefold superstructure (LaGaH1.66 type) and the onefold structure (NdGaH1.1 type) is estimated on the basis of phase-composition isotherms and neutron powder diffraction to be x = 1.15.

Adverse childhood experiences, sexual risk-taking and non-consensual sexual experiences in a nationally representative study of 15-29-year-old Danes.

BACKGROUND: Adverse childhood experiences (ACEs) have been linked with risky health-related behaviors and poor health. OBJECTIVE: This study aimed to investigate associations of ACEs with a broad panel of sexual risk-taking behaviors and non-consensual sexual experiences among young people in Denmark. PARTICIPANTS AND SETTING: Baseline questionnaire data from 15 to 29-year-old participants in the nationally representative cohort study Project SEXUS were used in combination with data from Danish national registers to include a total of 13,132 individuals. METHODS: In logistic regression analyses, confounder-adjusted odds ratios (aORs) with 95 % confidence intervals (CIs) were obtained for associations of five ACE categories (Household challenges, Loss or threat of loss, Material deprivation, Abuse, and Neglect) and a cumulative ACE score with measures of sexual risk-taking and non-consensual sexual experiences. RESULTS: Statistically significant associations were observed between ACEs and multiple sexual risk-taking behaviors and non-consensual sexual experiences with particularly increased odds among individuals with a history of Abuse, Neglect, or an ACE score of 3 or more. Specifically, Abuse was associated with having received payment for sex (women: aOR 5.38; 95 % CI 2.73-10.61; men: aOR 2.11; 95 % CI 1.22-3.64), with having paid for sex (men: aOR 1.88; 95 % CI 1.41-2.51), and with having been the victim of a sexual assault after age 18 years (women: aOR 3.33; 95 % CI 2.36-4.68). CONCLUSIONS: In this Danish study, multiple measures of sexual risk-taking and non-consensual sexual experiences were markedly more common among young people with ACEs than in those without ACEs. This knowledge should be considered in future initiatives to promote sexual health among young people.

Mortality of Invasive Pneumococcal Disease following Introduction of the 13-Valent Pneumococcal Conjugate Vaccine in Greenland.

Before the incorporation of the 13-valent pneumococcal conjugate vaccine (PCV13) into the childhood vaccination regimen in Greenland in 2010, Inuit populations experienced a substantial prevalence of invasive pneumococcal disease (IPD). The PCV13 introduction has been shown to markedly reduce the incidence of IPD. This current study estimated the impact of PCV13 introduction on IPD mortality in Greenland. This was a nationwide register-based study using all available data on IPD cases 1995-2020 in Greenland. Thirty-one-day IPD case fatality rates (CFR), and all-cause and mortality rates associated with IPD during the period before the introduction of PCV13 (January 1995 to September 2010) were compared with those observed in the post-PCV13 era (September 2010 to October 2020). Standardized mortality ratios (SMRs) expressed differences in mortality by sex, age, region, ethnicity, comorbidity, and serotype. IPD CFR decreased with 24.5% from the pre- to the post-PCV13 period. SMR in IPD patients decreased by 57% (95% CI, 36-75%), and a reduction occurred in all age groups. While SMR in IPD persons ≥60 years remained virtually unchanged, there were no IPD-related deaths in persons ≤39 years in the post-PCV13 period. In conclusion, IPD-related mortality has decreased in Greenland following PCV13 introduction in 2010 in the country.

Comparison of morbidity and mortality after bloodstream infection with vancomycin-resistant versus -susceptible Enterococcus faecium: a nationwide cohort study in Denmark, 2010-2019.

The emergence of bloodstream infections (BSI) caused by vancomycin-resistant Enterococci (VRE) has caused concern. Nonetheless, it remains unclear whether these types are associated with an excess risk of severe outcomes when compared with infections caused by vancomycin-susceptible Enterococci (VSE). This cohort study included hospitalized patients in Denmark with Enterococcus faecium-positive blood cultures collected between 2010 and 2019 identified in the Danish Microbiology Database. We estimated 30-day hazard ratio (HR) of death or discharge among VRE compared to VSE patients adjusted for age, sex, and comorbidity. The cohort included 6071 patients with E. faecium BSI (335 VRE, 5736 VSE) among whom VRE increased (2010-13, 2.6%; 2014-16, 6.3%; 2017-19; 9.4%). Mortality (HR 1.08, 95%CI 0.90-1.29; 126 VRE, 37.6%; 2223 VSE, 37.0%) or discharge (HR 0.89, 95%CI 0.75-1.06; 126 VRE, 37.6%; 2386 VSE, 41.6%) was not different between VRE and VSE except in 2014 (HR 1.87, 95% CI 1.18-2.96). There was no interaction between time from admission to BSI (1-2, 3-14, and >14 days) and HR of death (P = 0.14) or discharge (P = 0.45) after VRE compared to VSE, despite longer time for VRE patients (17 vs. 10 days for VSE, P < 0.0001). In conclusion, VRE BSI was not associated with excess morbidity and mortality. The excess mortality in 2014 only may be attributed to improved diagnostic- and patient-management practices after 2014, reducing time to appropriate antibiotic therapy. The high level of mortality after E. faecium BSI warrants further study.

Sexuality among young Danes treated for mental health problems: Baseline findings in a nationwide cohort study.

Mental health problems are common among adolescents and young adults (AYA), but although sexuality plays a central role in the transition from adolescence to adulthood, associations between such problems and sexuality have only been sparsely researched in AYA. The aim of this study was to investigate the association between mental health problems and various outcomes related to body and sexuality, romantic relationships, sexual functioning, and sexual risk behaviors among AYA. We used questionnaire data from 8696 Danish AYA aged 15-24 years who participated in the nationwide cohort study Project SEXUS at baseline in 2017-2018. Logistic regression analyses yielded demographically weighted, age-adjusted odds ratios for associations between mental health problems and sexual outcomes. Female AYA treated for mental health problems reported more active sex lives than other women. Treatment for mental health problems was associated with statistically significantly increased odds ratios for several sexual dysfunctions, and treated AYA significantly more often reported sexual debut before age 15 years, high sex partner numbers, sexual victimization, unsafe sex, sexually transmitted infections, induced abortions, discontentment with the appearance of body and genitalia, gender non-conformity, same-sex sexual experience, and non-heterosexual identity. Compared to healthy peers, AYA treated for mental health problems constitute a vulnerable group at increased risk of sexual adversities. Healthcare professionals should acknowledge these possible sexual challenges and offer relevant counselling to reduce the risk of adverse sexual outcomes in this group.

Associations between recalled childhood gender nonconformity and adult sexual dysfunction in Denmark: baseline assessment in the Project SEXUS cohort study.

BACKGROUND: Sexual dysfunctions may negatively affect an individual's self-perceived womanhood or manhood, but whether gender nonconformity in childhood or adolescence can influence adult sexual functioning has not been examined so far. AIM: To explore the possible link between recalled childhood gender nonconformity and sexual dysfunctions in adulthood in a large sample. METHODS: We analyzed baseline questionnaire data from Project SEXUS, a nationally representative cohort study on sexual health among 15- to 89-year-old Danish citizens. Our sample included sexually active participants aged ≥18 years who were queried about gender nonconformity in childhood or adolescence (N = 21 390). To capture sexual dysfunctions, we assessed (1) difficulties with lubrication, orgasm, vaginal cramps precluding sexual intercourse, and/or genital pain during partnered sexual activity in women and (2) difficulties with erection, premature ejaculation, orgasm, and/or genital pain during partnered sexual activity in men. Furthermore, we assessed whether such difficulties were perceived as problematic. The 6-item Female Sexual Function Index and the 5-item International Index of Erectile Function served as standardized measures. Polytomous logistic regression analyses yielded demographically weighted adjusted odds ratios (aORs) with 95% CIs for associations between childhood gender nonconformity and sexual dysfunctions, controlling for age, sociodemographics, health-related factors, and other potential confounders. OUTCOMES: Sexual difficulties and dysfunctions, as well as scores on the Female Sexual Function Index and International Index of Erectile Function. RESULTS: Age-adjusted odds ratios indicated that sexual dysfunctions were significantly more common among childhood gender-nonconforming than conforming participants. After controlling for additional potential confounders, most sexual dysfunctions-notably, vaginal cramps in women (aOR, 2.12; 95% CI, 1.25-3.60) and genital pain dysfunction in men (aOR, 2.99; 95% CI, 1.79-4.99)-remained significantly increased among childhood gender-nonconforming respondents. CLINICAL IMPLICATIONS: Findings suggest that self-perceived gender nonconformity in childhood or adolescence may negatively affect sexual functioning in adult life. If confirmed by future studies, they may warrant a clinical emphasis on such issues in sexologic treatment and care. STRENGTHS AND LIMITATIONS: Our study is the first to report associations between childhood gender nonconformity and adult sexual dysfunction, building on data from a large-scale, nationally representative cohort study. The retrospective assessment of childhood gender nonconformity via one item might have neglected significant dimensions of this construct. CONCLUSION: The present study is the first to show that individuals who recall being gender nonconforming in childhood or adolescence may be at a greater risk of experiencing sexual dysfunctions, particularly sexual pain disorders, as adults.

Sexuality Among Young Danes Treated for Long-Lasting or Severe Physical Disease: Baseline Findings in a Nationwide Cohort Study.

PURPOSE: Sexual ramifications of physical disease are well-documented in adult populations, but are scarcely investigated among adolescents and young adults (AYA). This study compared measures of sexuality and sexual health among 8,696 15-year-old to 24-year-old Danes with and without a history of treatment for long-lasting or severe physical disease. METHODS: Using baseline data from Project SEXUS, a nationally representative cohort study on sexual health in the Danish population, differences in various domains of sexual behaviors and sexual health between AYA who have and AYA who have not been treated for long-lasting or severe physical disease were investigated. Logistic regression analyses yielded demographically weighted age-adjusted odds ratios (ORs) for associations between physical diseases and sexual outcomes. RESULTS: AYA treated for long-lasting or severe physical disease resembled their healthy peers on fundamental aspects of sexual interest, activity and satisfaction. However, significantly increased odds ratios of various sexual difficulties and dysfunctions, early sexual debut, high sex partner numbers, discontentment with body or genital appearance, gender nonconformity, nonheterosexuality, and exposure to sexual assaults were observed, overall or within specific disease categories. DISCUSSION: The overall similarity in sexual profiles between AYA treated for physical disease and healthy peers indicates that clinicians should routinely address questions related to sexuality and relationships when encountering AYA with chronic health conditions. Moreover, the observed excess of certain adversities, including sexual assaults, among physically ill AYA highlights the need for preventive measures and counseling services specifically targeted at AYA afflicted by physical disease.

Symptoms of anxiety and depression in Denmark during the first year of the COVID-19 pandemic: A two-wave matched-control study.

Subsequent to the restriction measures taken to curb the COVID-19 infection rate, researchers theorized these would have detrimental mental health consequences. This two-wave matched-control study investigates depression and anxiety symptoms during the first 12 months of the pandemic (March 2020-March 2021) in Denmark with data from the I-SHARE and Project SEXUS studies. The I-SHARE study includes 1,302 (Time period 1 only n = 914, Time period 2 only n = 304, both time periods 1 and2 n = 84) Danish participants, and the sex and birth year-matched control participants from the Project SEXUS study comprise 9,980 Danes. During the first year of the pandemic, the study populations' anxiety and depression symptom mean levels did not significantly differ from pre-pandemic matched controls. Younger age, female gender, fewer children in the same household (depression only), lower education level, and not being in a relationship (depression only) were associated with increased anxiety and depression symptom scores. The key COVID-19-related variable linked with significantly higher anxiety and depression symptom scores was COVID-19-related loss of income. Contrary to initial concerns, we did not find a significant effect of the pandemic on anxiety and depression symptom scores. However, the results underscore the importance of structural resources to prevent income loss to safeguard mental health during crises such as a pandemic.

Psychosocial, sexual, reproductive and menopausal health in women with and without HIV in a high-income setting.

OBJECTIVES: To investigate psychosocial, sexual, reproductive and menopausal health in women with HIV (WWH) compared to women without HIV (WWOH) in Denmark. DESIGN: A nationwide cross-sectional study. METHODS: Data was retrieved from the SHARE study , a Danish nationwide cross-sectional survey examining psychosocial, sexual and reproductive health in people with HIV. Data from WWH, collected in 2021-2022, was matched 1:10 on age to a comparison group of WWOH from the nationally representative cohort study Project SEXUS . Associations between HIV status and psychosocial and sexual health outcomes were assessed by adjusted odds ratios (aOR) with 95% confidence intervals (95% CIs) obtained in logistic regression analyses controlling for potential confounding variables. The severity of menopausal symptoms in WWH was compared to published reference norms. RESULTS: Among 144 WWH and 1440 WWOH, recurrent loneliness was significantly more common among WWH (aOR 2.22 [95% CI: 1.25-3.96]), and WWH had significantly fewer children and close friends (aOR 0.52 [95% CI: 0.28-0.96] for 3-9 vs. 0-2 close friends). Symptoms of anxiety and depression did not differ between groups. Lack of sexual desire (aOR 2.90 [95% CI: 1.29-6.50]), low FSFI-6 score indicating sexual dysfunction (aOR 3.40 [95% CI: 1.33-8.69]), lubrication dysfunction (aOR 8.24 [95% CI: 2.83-24.00]) and genital pain dysfunction (aOR 5.13 [95% CI: 1.26-20.86]) were significantly more common in WWH compared to WWOH. No differences were seen in menopausal characteristics. CONCLUSIONS: WWH in Denmark have fewer children and close friends, and more often report recurrent loneliness, lacking sexual desire and sexual dysfunction compared to WWOH. No differences were evident in menopausal characteristics.

CANOPTIPHYS study protocol: Optimising PHYSical function before CANcer surgery: effects of pre-operative optimisation on complications and physical function after gastrointestinal cancer surgery in older people at risk-a multicentre, randomised, parallel-group study.

BACKGROUND: This multicentre study explores the effects of pre-operative exercise on physical fitness, post-operative complications, recovery, and health-related quality of life in older individuals with low pre-operative physical capacity scheduled to undergo surgery for colorectal cancer. We hypothesise that this group of patients benefit from pre-operative exercise in terms of improved pre-operative physical function and lower rates of post-operative complications after surgery compared to usual care. Standardised cancer pathways in Sweden dictate a timeframe of 14-28 days from suspicion of cancer to surgery for colorectal cancer. Therefore, an exercise programme aimed to enhance physical function in the limited timeframe requires a high-intensity and high-frequency approach. METHODS: Participants will be included from four sites in Stockholm, Sweden. A total of 160 participants will be randomly assigned to intervention or control conditions. Simple randomisation (permuted block randomisation) is applied with a 1:1 allocation ratio. The intervention group will perform home-based exercises (inspiratory muscle training, aerobic exercises, and strength exercises) supervised by a physiotherapist (PT) for a minimum of 6 sessions in the pre-operative period, complemented with unsupervised exercise sessions in between PT visits. The control group will receive usual care with the addition of advice on health-enhancing physical activity. The physical activity behaviour in both groups will be monitored using an activity monitor. The primary outcomes are (1) change in physical performance (6-min walking distance) in the pre-operative period and (2) post-operative complications 30 days after surgery (based on Clavien-Dindo surgical score). DISCUSSION: If patients achieve functional benefits by exercise in the short period before surgery, this supports the implementation of exercise training as a clinical routine. If such benefits translate into lower complication rates and better post-operative recovery or health-related quality of life is not known but would further strengthen the case for pre-operative optimisation in colorectal cancer. TRIAL REGISTRATION: ClinicalTrials.gov NCT04878185. Registered on 7 May 2021. https://clinicaltrials.gov/ct2/home.

Relationship between surgical volume and outcomes in elective and acute cholecystectomy: nationwide, observational study.

BACKGROUND: High surgical volumes are attributed to improved quality of care, especially for extensive procedures. However, it remains unknown whether high-volume surgeons and hospitals have better results in gallstone surgery. The aim of this study was to investigate whether operative volume affects outcomes in cholecystectomies. METHODS: A registry-based cohort study was performed, based on the Swedish Registry of Gallstone Surgery. Cholecystectomies from 2006 to 2019 were included. Annual volumes for the surgeon and hospital were retrieved. All procedures were categorized into volume-based quartiles, with the highest group as reference. Low volume was defined as fewer than 20 operations per surgeon per year and fewer than 211 cholecystectomies per hospital per year. Differences in outcomes were analysed separately for elective and acute procedures. RESULTS: The analysis included 154 934 cholecystectomies. Of these, 101 221 (65.3 per cent) were elective and 53 713 (34.7 per cent) were acute procedures. Surgeons with low volumes had longer operating times (P < 0.001) and higher conversion rates in elective (OR 1.35; P = 0.023) and acute (OR 2.41; P < 0.001) operations. Low-volume surgeons also caused more bile duct injuries (OR 1.41; P = 0.033) and surgical complications (OR 1.15; P = 0.033) in elective surgery, but the results were not statistically significant for acute procedures. Low-volume hospitals had more bile duct injuries in both elective (OR 1.75; P = 0.002) and acute (OR 1.96; P = 0.003) operations, and a higher mortality rate after acute surgery (OR 2.53; P = 0.007). CONCLUSION: This study has demonstrated that operative volumes influence outcomes in cholecystectomy. The results indicate that gallstone surgery should be performed by procedure-dedicated surgeons at hospitals with high volumes of this type of benign surgery.

Surgeons who perform an operation are often thought to have better results. It remains unknown whether this is true for gallstone surgery. This research study investigated whether the surgeon's and hospital's volume of operations affects results after gallstone operations. The study was based on the Swedish Registry of Gallstone Surgery, in which all gallstone operations in Sweden are registered. Some 14 000 operations are performed every year. Operations from 2006 to 2019 were included. The annual volume for each surgeon was counted and all operations were divided into four groups. The operating time and number of unwanted events were compared between the groups, for both planned and acute operations. : The study included 154 934 operations. Of these, 101 221 (65.3 per cent) were planned and 53 713 (34.7 per cent) were acute. Surgeons with low volumes had longer operating times and higher risk of a change in technique from keyhole to open surgery, in both planned and acute operations. Surgeons and hospitals with low volumes also had more unwanted events after planned operations. The risk of death at a hospital with low volumes was slightly higher in acute surgery. This study has shown that the surgeon's and hospital's volumes affect results after gallstone surgery, suggesting that this type of surgery should be performed by surgeons and at hospitals that perform these operations frequently.

Adverse childhood experiences and mental health problems in a nationally representative study of heterosexual, homosexual and bisexual Danes.

Non-heterosexual persons more often report adverse childhood experiences (ACEs) than heterosexuals, and they generally bear a greater burden of mental health challenges. However, population-based data on this topic are scarce. In a nationally representative study within the Project SEXUS, one of the world's largest cohort studies on sexual health, we used data from 57,479 individuals in Denmark to explore the interplay between ACEs and mental health problems among self-identified heterosexual, homosexual and bisexual persons, and among self-identified heterosexuals with or without same-sex sexual experience. Compared to heterosexuals, non-heterosexual persons were more likely to report most of the studied ACEs, with odds ratios (ORs) for the ACE category "abuse" ranging from 1.38 to 1.75 for homosexual women, from 1.76 to 2.65 for homosexual men, from 2.52 to 3.64 for bisexual women, and from 1.58 to 6.07 for bisexual men. Furthermore, non-heterosexual persons had consistently and statistically significantly higher odds for mental health problems (ORs: 1.50 to 4.63). Combinations of ACEs with a non-heterosexual identity resulted in markedly elevated odds for mental health problems, particularly among bisexual individuals. This included high odds for suicidal thoughts/attempts among bisexual persons with a history of "neglect" (women: OR=12.82; men: OR=35.24) and "abuse" (women: OR=11.81; men: OR=11.65). Among self-identified heterosexuals, combinations of ACEs with same-sex sexual experience were associated with consistently elevated odds for mental health problems (ORs: 2.22 to 12.04). The greater burden of ACEs among self-identified homosexuals and, most notably, bisexuals may account for part of their excess risk of mental health problems. These findings emphasize the public health importance of preventive measures to minimize the burden of ACEs and avert their harmful long-term effects. Moreover, they highlight the need to safeguard the welfare of children and adolescents with non-conforming expressions of sexuality.

Sexual Inactivity and Dysfunction in Denmark: A Project SEXUS Study.

Sexual dysfunctions are common experiences that often impact negatively on the health and well-being of affected individuals. We used baseline questionnaire data from 62,675 Danes aged 15-89 years, who participated in the cohort study Project SEXUS 2017-2018, to yield nationally representative estimates of the prevalence of sexual inactivity and dysfunction and to identify their sociodemographic correlates. Overall, we found that 23.0% of sexually experienced men and 28.8% of sexually experienced women had not been sexually active with another person within the last year. Sexual inactivity with another person was associated with both young and old age, single status, less favorable socioeconomic conditions, underweight and obesity, indicators of poor health, no use of alcohol, and physical inactivity. Among sexually active respondents, 18.0% of men had experienced any dysfunction within the last year, including erectile dysfunction (7.4%), premature ejaculation dysfunction (10.0%), orgasmic dysfunction (4.0%), and/or genital pain dysfunction (0.7%). Among women, 20.4% had experienced any dysfunction within the last year, including lubrication dysfunction (9.1%), orgasmic dysfunction (12.2%), genital pain dysfunction (5.0%), and/or vaginal cramp dysfunction (vaginismus) (0.8%). Additionally, 3.4% of men and 9.9% of women with a spouse/partner had experienced hypoactive sexual desire disorder within the last four weeks. Using the 5-item International Index of Erectile Function (IIEF-5) and the 6-item Female Sexual Function Index (FSFI-6) among respondents with a spouse/partner who had attempted sexual intercourse within the last four weeks, we found that 3.8% of men had experienced moderate or severe erectile dysfunction (IIEF-5 score ≤ 11) and 20.8% of women had experienced any sexual dysfunction (FSFI-6 score ≤ 19) during that period. Single status, difficulties paying bills and, among men, unemployment were positively associated with sexual dysfunction. In conclusion, we document several sociodemographic disparities in the prevalence of sexual inactivity and dysfunction in Denmark. In particular, both sexual inactivity and dysfunction were more common among singles and those reporting financial difficulties.

Physical and Mental Health Problems and Their Associations With Inter-Personal Sexual Inactivity and Sexual Dysfunctions in Denmark: Baseline Assessment in a National Cohort Study.

BACKGROUND: Physical and mental health are important to sexual function and wellbeing. Yet, associations of ill-health with sexual inactivity and dysfunctions are scarcely researched at population level. AIM: To explore and document associations of self-rated health and physical and mental health problems with inter-personal sexual inactivity and sexual dysfunctions. METHODS: We used data from a probability-based, nationally representative sample of 60,958 sexually experienced Danes aged 15-89 years who participated in the 2017-18 Project SEXUS cohort study. Logistic regression analyses provided demographically weighted odds ratios for associations between health measures and sexual outcomes adjusted for partner status and other potential confounders. OUTCOMES: Inter-personal sexual inactivity and a range of male and female sexual dysfunctions. RESULTS: Inter-personal sexual inactivity was more common among individuals with bad or very bad self-rated health compared to peers rating their health as good or very good (men: adjusted odds ratio 1.93, 95% confidence interval 1.66-2.25; women: 1.66, 1.42-1.94). Individuals rating their health as bad or very bad were also consistently more likely to report sexual dysfunctions, with associated statistically significant adjusted odds ratios ranging from 1.66 to 6.38 in men and from 2.25 to 3.20 in women. Patient groups at high risk of sexual dysfunctions comprised individuals afflicted by cardiovascular diseases, pain conditions, diabetes, gastrointestinal and liver diseases, cancer, skin diseases, nervous system diseases, gynecological diseases, benign prostatic hyperplasia, other physical health problems, stress, anxiety, affective disorders, self-injury or suicide ideation and attempts, posttraumatic stress disorder, personality disorders, eating disorders, psychoses and other mental health problems. CLINICAL IMPLICATIONS: These findings warrant heightened awareness among healthcare professionals, public health promoters and researchers concerning insufficiently appreciated sexual challenges among individuals with poor health. STRENGTHS & LIMITATIONS: The major strengths of our investigation include the large size of the study cohort, the detailed assessment of health-related variables, potential confounders and sexual outcomes, and the fact that we provide new population-based knowledge about less common and sparsely researched sexual dysfunctions and diseases. Limitations of our study include its cross-sectional nature and its modest response rate (35%). CONCLUSION: Findings from our large and nationally representative cohort study provide evidence that poor self-rated health and a range of specific physical and mental health problems are associated with statistically significantly increased rates of inter-personal sexual inactivity and sexual dysfunctions. Bahnsen MK, Graugaard C, Andersson M, et al. Physical and Mental Health Problems and Their Associations With Inter-Personal Sexual Inactivity and Sexual Dysfunctions in Denmark: Baseline Assessment in a National Cohort Study. J Sex Med 2022;19:1562-1579.

Crossover From Individual to Collective Magnetism in Dense Nanoparticle Systems: Local Anisotropy Versus Dipolar Interactions.

Dense systems of magnetic nanoparticles may exhibit dipolar collective behavior. However, two fundamental questions remain unsolved: i) whether the transition temperature may be affected by the particle anisotropy or it is essentially determined by the intensity of the interparticle dipolar interactions, and ii) what is the minimum ratio of dipole-dipole interaction (Edd ) to nanoparticle anisotropy (Kef V, anisotropy⋅volume) energies necessary to crossover from individual to collective behavior. A series of particle assemblies with similarly intense dipolar interactions but widely varying anisotropy is studied. The Kef  is tuned through different degrees of cobalt-doping in maghemite nanoparticles, resulting in a variation of nearly an order of magnitude. All the bare particle compacts display collective behavior, except the one made with the highest anisotropy particles, which presents "marginal" features. Thus, a threshold of Kef V/Edd  ≈ 130 to suppress collective behavior is derived, in good agreement with Monte Carlo simulations. This translates into a crossover value of ≈1.7 for the easily accessible parameter TMAX (interacting)/TMAX (non-interacting) (ratio of the peak temperatures of the zero-field-cooled magnetization curves of interacting and dilute particle systems), which is successfully tested against the literature to predict the individual-like/collective behavior of any given interacting particle assembly comprising relatively uniform particles.

Shared environment and colorectal cancer: A Nordic pedigree registry-based cohort study.

Risk of colorectal cancer (CRC) increases in relatives of patients with CRC. The extent to which this is attributable to genetic predisposition or shared environment is unclear. We explored this question using nationwide cohorts from Denmark, Finland and Sweden. From 1977 to 2013, we identified 359 879 individuals with a CRC diagnosis and 2 258 870 of their relatives who we followed for CRC incidence. We calculated standardized incidence ratios (SIR) and 95% confidence intervals (CI) for CRC in individuals with an affected relative. We used nationwide household and pedigree data along with national SIR estimates to calculate risk ratios (RR) for the contribution of shared household environment, childhood environment and genetic relationship to CRC risk in those with an affected relative. SIR of CRC was increased for individuals with an affected relative, across all countries and ages. For those with an affected parent, the SIR was 1.65 (95% CI: 1.61-1.69), 1.98 (95% CI: 1.87-2.09), for those with an affected sibling and 2.14 (95% CI: 1.84-2.49) for those with an affected halfsibling. In those <65 years old, shared childhood (RR: 1.41, 95% CI: 1.26-1.57) and household (RR: 2.08, 95% CI: 1.25-3.46) environments were significantly greater contributors to familial risk of CRC than genetics (RR: 0.88, 95% CI: 0.53-1.46). This large-scale Nordic population-based study of excess risk of CRC among relatives of those with CRC addresses the difficult disentangling of shared environment from genetic predisposition in the heritability of CRC. We found shared environment to be the most important contributor to CRC risk.