Danish National Research Articles

Prevalence and clinical characteristics of incontinentia pigmenti: a nationwide population-based study

BackgroundIncontinentia pigmenti (IP) is an X-linked dominant multisystemic disorder caused by pathogenic variants in the IKBKG gene. Population-based research into the epidemiology of IP is lacking.MethodsThis nationwide cross-sectional study from Jan 1st, 1995 to August 25th, 2021, searched the Danish National Patient Registry (DNPR), the Danish National Database of Rare Genetic Diseases (RareDis) and the Danish Genodermatosis Database to identify patients recorded with a diagnosis of IP. This search was followed by diagnosis validation and collection of clinical data from patient medical records. We investigated the clinical characteristics and genetics of the final cohort of validated IP cases. We estimated the point prevalence in the Danish population, based on non-deceased IP patients currently living in Denmark. Furthermore, we estimated the birth prevalence from 1995 to 2020, assuming a diagnostic delay of up to six months.ResultsWe identified a validated cohort of 75 IP patients, including 71 (94.7%) females and 4 (5.3%) males. We estimated a birth prevalence of 2.37 (95% CI: 1.74–3.25) per 100,000 or 1 in 42,194. A total of 54 (72%) patients had a genetic diagnosis, including 39 (72.2%) with the recurrent exon 4–10 deletion and 10 (18.5%) with point mutations in IKBKG. A positive family history was reported in 53.3%. Besides the recognizable blaschkolinear skin lesions reported in 70 (93.3%) of the patients, commonly reported manifestations included the involvement of the teeth (58.7%), the central nervous system (30.7%), hair (26.7%), and eyes (22.6%), as well as nail dystrophy (16.0%).ConclusionsWe identified and characterized a nationwide population-based cohort of IP patients and report a birth prevalence of 2.37 per 100,000 live births, which is twice as high as previous estimates.

Post-Marketing Safety of Ustekinumab Based on 14-Year Follow-Up in Danish National Patient Data.

Psoriasis (PsO), a chronic inflammatory skin disorder affecting a substantial proportion of populations globally, often necessitates systemic treatment including biologics. This 14-year cohort study, based on Danish national register data, aimed to investigate the enduring safety profile of ustekinumab compared to other systemic psoriasis treatments. Using comprehensive Danish national register data, this study scrutinized patients diagnosed with psoriasis or psoriatic arthritis (PsA) who received ustekinumab. The treatment group comparators were non-biological systemic treatment (non-biologic), tumor necrosis factor α inhibitor medicine groups (TNF-α), interleukin (IL)-17 inhibitors (IL-17), and IL-23 inhibitors (IL-23). The study periods for comparisons were 2009-2022 for non-biologic and TNF-α, 2015-2022 for IL-17, and 2018-2022 for IL-23. Outcomes were malignancies, cardiovascular events, serious infections, and serious hypersensitivity reactions. Cox proportional hazards regression models were employed to analyze two estimands: a standard intention-to-treat (ITT) estimand and a continuous-index-treatment (CIT) estimand, which considered switch and re-initiation of treatments within individuals. Users of ustekinumab were found to be younger on average, with an average age of 45.1 years compared to 51.6, 47.2, 49.0, and 48.4 years in the non-biologic, TNF-α, IL-17, and IL-23 groups, respectively. Also, 57.3% of the ustekinumab users were male, compared to 46.7%, 48.9%, 50.9%, and 58.3% for the non-biologic, TNF-α, IL-17, and IL-23 groups, respectively. Although the hazard ratio estimates varied across comparators, ustekinumab was found to be safe: regardless of PsA status, no discernible safety signals in terms of malignancy, MACE, severe infections, or severe hypersensitivity reactions were observed for ustekinumab when compared to the treatment comparators. The present study corroborated the enduring safety of ustekinumab in the context of PsO treatment.

Aggressive end-of-life care in patients with gastrointestinal cancers - a nationwide study from Denmark.

Knowledge of determinants of aggressive end-of-life care is crucial to organizing effective palliative care for patients with gastrointestinal (GI) cancer. This study aims to investigate the determinants of aggressive end-of-life care in patients with GI cancer. A national register-based cohort study using data from the Danish Register on Causes of Death, the Danish National Patient Register, and the Danish Palliative Database was the method of study employed. All Danish patients who died from GI cancers from 2010 to 2020 comprised the study setting. There were 43,969 patients with GI cancers in the cohort, of whom 62% were hospitalized in the last 30 days of life, 41% of patients died in the hospital, 10% had surgery, 39% were subjected to a radiological examination during the last 30 days of life and 3% had antineoplastic treatment during the last 14 days of life. Among all types of GI cancers, pancreatic cancer was significantly associated with all outcomes of aggressive end-of-life care except surgery. Patients in specialized palliative care (SPC) had lower odds of receiving aggressive end-of-life care and dying in the hospital. We found that patients with comorbidity and those who were divorced had higher odds of being hospitalized at the end of life and dying in the hospital. Aggressive end-of-life care is associated with disease factors and socio-demographics. The potential to reduce aggressive end-of-life care is considerable in patients with GI cancer, as demonstrated by the impact of SPC. However, we need to address the needs of patients with GI cancer who do not receive SPC.

Pediatric Neuroendocrine Tumors in Denmark: Incidence, Management, and Outcome from 1995 to 2020.

Neuroendocrine tumors (NETs), although rare, are considered one of the most common gastrointestinal and bronchopulmonary pediatric neoplasms. We aimed to determine the incidence, tumor characteristics, management, and outcome of NETs and explore the role of genetic predisposition, focusing on low and intermediate grade tumors. Using the Danish National Pathology Registry, we conducted a nationwide retrospective study including all Danish children aged ≤18 years diagnosed with a pathology-proven NET between 1995 and 2020. We identified 220 patients, with a 1.89:1 female to male ratio. The yearly incidence was 6.84 per 1 million children, with no significant change in incidence throughout the observation period. NETs were located in the appendix (93.2%), the pulmonary system (4.5%), and pancreas (2.3%). One recurrence was noted in the pancreas in a genetically predisposed patient with multiple neuroendocrine neoplasia type 1 (MEN1), resulting in an overall recurrence rate of 0.5% (0% in appendiceal NETs; 0% in bronchopulmonary NETs; 20.0% in pancreatic NETs). No NET-related mortality was registered. Four patients had a known predisposing genetic condition, one appendiceal NET associated with neurofibromatosis type 1, and three pancreatic NETs associated with MEN1. Postsurgical surveillance regimes, choice of tumor markers, and imaging modality varied throughout the study period. We confirmed a stable incidence of pediatric NETs during the study period. The overall recurrence rate was 0.5% and no NET-related mortality was observed. Known genetic predisposition was present in 1.8% of patients. Future guidelines should consider the apparent indolent nature and excellent prognosis of these tumors.

Omphalocele prevalence and co-occurring malformations: a nationwide register-based study of Danish live births in 1997–2021

PurposeOmphalocele is a congenital abdominal wall defect associated with a high risk of morbidity and mortality, with co-occurring congenital malformations often being the most important prognostic factor. High rates of spontaneous and medical terminations have been reported among pregnancies with omphalocele and co-occurring malformations. Few studies have focused on co-occurring malformations, particularly non-gastrointestinal malformations among live births. This study examined birth prevalence of omphalocele and co-occurring major malformations among a 25-year Danish liveborn cohort.MethodsThis nationwide retrospective prevalence study used data from the Danish National Patient Register and Danish Civil Registration System for infants who were delivered in Denmark during 1997–2021 and included in the Danish neonatal screening biobank. Diagnoses of omphalocele and co-occurring malformations were ascertained and prevalence estimated using Poisson regression.ResultsAmong 1,498,685 live births, 147 infants with omphalocele were identified, yielding a combined and stable prevalence (per 10,000 infants) of 0.98 (95% CI 0.83–1.15). Over one-half (53.7%) presented with one or more major malformations, and an additional 17.0% were diagnosed with a syndrome.ConclusionsOmphalocele birth prevalence in Denmark was stable over a recent 25-year period. The proportion of infants with co-occurring major malformations or diagnosed syndrome has important implications for long-term healthcare demands.

Patients with Osteoporotic Vertebral Fractures in Denmark 2010-2018: A National Registry Analysis.

Register-based cohort study based on linked data from multiple national registries. To describe the sociodemographic and health characteristics of individuals in Denmark with osteoporotic vertebral fractures (OVF) and analyze time trends. The study compares labor market participation and comorbidities between OVF patients and a matched control group without these fractures. The incidence and characteristics of OVF patients in Denmark are not well-documented. Multiple national health and economic registries enable linking of individual patient data, providing new insights. We identified individuals with hospital-diagnosed vertebral compression fractures from 2010 to 2018 using the Danish National Patient Register. A control group was matched by sex, age, and municipality. Work status prior to OVF was categorized as employed, on paid sickness benefit, in early retirement, or on old-age pension. Comorbidities were analyzed based on hospital diagnoses within 10 years prior to the fracture. During 2010 to 2018, 20.262 individuals had a hospital contact with an OVF. Sixty-four percent were women and the mean age was 73.6 (SD 12.4) years. OVF incidence increased from 86 in 2010 to 142 per 100,000 persons in 2018. In 2018, the regional incidence ranged from 120 to 154 per 100,000. More than a fifth of the patients were working prior to the fracture, while 77% were in early retirement or old-age pension. The population with OVF had more comorbidities than the matched comparison group. The incidence of hospital-diagnosed OVFs has risen over the last decade, with regional differences. Notably, over 20% of OVF patients were still employed, highlighting the socioeconomic impact of this condition.

Opioids and Dementia in the Danish Population.

Opioids have been studied as a potential risk factor for dementia, but evidence concerning long-term noncancer opioid use and exclusive use of weak opioids and associated dementia risk is sparse. To assess the association between cumulative noncancer use of opioids and risk of age-related all-cause dementia. This nested case-control study within a population-based cohort included 1 872 854 individuals without previous dementia, cancer, opioid addiction, or opioid use in terminal illness. Data were obtained from national Danish registers. Each individual who developed dementia during follow-up was incidence-density matched to 5 dementia-free controls. Statistical analysis was performed from August 2023 to March 2024. Cumulative opioid exposure was based on filled prescriptions available from 1995 through 2020. Conditional logistic regression provided adjusted incidence rate ratios (IRRs) for associations between opioids and dementia. Among 1 872 854 individuals without previous dementia, cancer, opioid addiction, or opioid use in terminal illness included in the study, 93 638 (5.0%) developed all-cause dementia during follow-up (51 469 [55.0%] female; median [IQR] age, 78.1 [73.0-82.8] years) and were matched to 468 190 control individuals (257 345 [55.0%] female; median [IQR] age, 78.0 [73.0-82.8] years). Opioid use up to 90 total standardized doses (TSDs) was not consistently associated with dementia risk. Opioid exposure above 90 TSDs yielded increased IRRs of dementia occurring before age 90 years ranging from 1.29 (95% CI, 1.17-1.42) for 91 to 200 TSDs to 1.59 (95% CI, 1.44-1.76) for greater than 500 TSDs for age-band 60 to 69 years at dementia diagnosis. Corresponding IRRs were 1.16 (95% CI, 1.11-1.22) to 1.49 (95% CI, 1.42-1.57) for age-band 70 to 79 years and 1.08 (95% CI, 1.03-1.14) to 1.21 (95% CI, 1.16-1.27) for 80 to 89 years. Sensitivity analyses corroborated associations in individuals with chronic noncancer pain and with use of weak opioids. This study found that opioid use of less than 90 TSDs was not significantly associated with increased dementia risk. Above 90 TSDs of opioid use was associated with an elevated dementia risk before age 90 years, which persisted in individuals with chronic noncancer pain and in individuals solely exposed to weak opioids. Further research should ascertain whether the findings denote causality between opioids and dementia risk.

Population based audit of heart radiation doses in 6925 high-risk breast cancer patients from the Danish breast cancer group RT Nation study

Background and purposeIn this study, we conducted a population-based retrospective audit of heart doses for high-risk breast cancer (BC) over a nine-year period in patients treated with adjuvant CT-based radiotherapy in a comprehensive and homogenized national BC cohort. Additionally, this serves as a demonstration of performing large scale audits with consistent delineations created by an auto-segmentation tool. Materials and methodsHigh-risk BC patients treated with adjuvant radiotherapy in the period 2008–2016 from all seven radiotherapy centres in Denmark were included. A homogenized cohort was created using an inhouse developed auto-segmentation tool. The homogenized cohort volume and planned doses (mean heart dose (MHD), V20Gy and V40Gy) were evaluated. Volumes and dose metrics were compared for clinical and homogenized heart volumes. ResultsAmong 6925 patients, 5589(81 %) had a clinical heart delineation. The median delineated heart volume increased from 531.9 ml (2008) to 638.5 ml (2016) (p < 0.01). The median MHD for the homogenized cohort was 1.58 Gy (2008–2016) with an overall decreasing trend, 2.14 Gy in left- and 1.08 Gy in right-sided patients. The median MHD in the clinically delineated hearts was 0.01 Gy lower than the planned median MHD in the homogenized cohort. ConclusionDuring 2008–2016 the planned heart dose has been low across the population. A volume increase was observed in the clinically delineated hearts, however the median MHD in the homogenized cohort was low, with 1.58 Gy. The study demonstrated the possibilities for full population-based and consistent dose audit by using auto-segmentation tools.

Mental health, risk behaviors, and social life factors in relation to adolescents' suicide ideation, plans and attempt.

This study investigated differences in mental health and well-being, risk behaviors, and social life factors among adolescents who experienced different forms of suicidality. We examined 18-years-olds in the Danish National Birth Cohort (N = 47,852). Suicidality was defined with mutually exclusive categories ranging from no suicidality, self-reported suicide ideation, plans, and attempt as well as hospital-recorded suicide attempt. The proportion of adolescents with self-reported poor mental health and well-being, risk behaviors, and social life factors were compared across forms of suicidality. Sample weights were applied. Depressive symptoms were reported by 14% (95% CI 13%;14%) of girls with no suicidality, 44% (95% CI 43%;45%) of girls with suicide ideation, and 68% (95% CI 65%;72%) 66% (95% CI 60%;72%) of girls with self-reported suicide attempt or hospital-recorded suicide attempt respectively. Among boys, depressive symptoms were reported by 5% (95% CI 4%;5%) of those with no suicidality, 27% (95% CI 26%;28%) of those with suicide ideation, and 51% (95% CI 45%;57%) and 40% (95% CI 22%;58%) of those with self-reported suicide attempt or hospital-recorded suicide attempt respectively. Likewise, other aspects of poor mental health and well-being gradually increased relative with more severe forms of suicidality, while no notable differences were identified between adolescents with self-reported and hospital-recorded suicide attempt. Similar tendencies were observed for risk behaviors and social life factors. These findings suggest that adolescents with suicidality, including the large proportion with suicide ideation only, faces challenges across several parameters of mental health and well-being, risk behavior, and social life factors. This emphasizes the need for community-based interventions to identify and support the large group of adolescents experiencing both more and less severe forms of suicidality. Clinicians should prioritize comprehensive psychiatric intervention to address the complex needs of suicidal adolescents effectively.

Educational inequalities in mental health expectancy. Analysis based on registry data and survey data from the Danish National Health Survey.

Social inequality in life expectancy (LE) and various indicators of health expectancy have received much attention. Mental health expectancy (MHE) has received less attention, although research has shown an increasing prevalence of poor mental health. We aimed to investigate educational differentials in LE in relation to good, moderate, and poor mental health. Nationwide registry data on education and mortality were linked and combined with data from the Danish National Health Survey for 2017 and 2021 on mental health and education. The sample group consisted of data on Danes aged 30 and over. MHE was estimated by Sullivan's method. From 2017 to 2021, a general decline in the MHE of Danes was observed. Furthermore, the educational inequality in MHE remained substantial between genders, and was larger than the inequality in LE. Changes in MHE differed across educational groups. For Danes with short education, good MHE tended to increase for men, while the increase was statistically significant among women. MHE is associated with educational attainment. Despite the observed changes in educational differential, substantial inequality persists, raising important questions about the underlying causes of social disparity in MHE.

Familial risk of sinus node dysfunction indicating pacemaker implantation: A nation-wide cohort study.

We aimed to investigate the risk of sinus node dysfunction (SND) indicating cardiac pacing and mortality in first-degree relatives to patients with a pacemaker implanted on this indication and assess the effect of onset-age on disease risk. In this nationwide register-based study we used the Danish civil registration registry to establish family structures and merged data with the Danish National Patient Registry and the Danish Pacemaker and ICD registry containing information on all pacemakers implanted due to SND in Denmark. We followed 6,027,090 individuals born after 1954 for 180,775,041 personyears between 1982-2022 among whom 2.477 pacemakers were implanted due to SND. The adjusted rate ratio (RR) of pacemaker-treated SND was 2.9 (2.4-3.6) for individuals having any father, mother or sibling with a pacemaker implanted on this indication compared with the general population (derived cumulative incidence at the age of 68 years: 0.79% and 0.27%, respectively). This risk was inversely proportional to implantation-age in the index person (≤60 years: RR=5.5 (3.4-9.0)). Overall, mortality was similar between individuals having a father, mother or sibling with SND and the general population, but higher for relatives to index-persons with an early onset (≤60 years: RR=1.22 (1.05-1.41)). First-degree relatives to SND patients are at increased risk of SND with risk being inversely associated with implantation-age in the index person. Mortality in first-degree relatives was comparable to the general population, although subgroup findings suggest an increased mortality among individuals with a family history of earlyonset SND.

The impact of reminders on representativeness and survey estimates among web-mode invited in the Danish National Health Survey.

Declining response proportions in health surveys may lead to increased non-response bias. Multiple reminders are often used to increase response proportions, and, thus, we aimed to determine if the use of reminders decreased the magnitude of non-response bias among web-mode invited in the Danish National Health Survey 2023. In the Danish National Health Survey 2023, a national random sample of 23467 individuals (aged ≥16 years) with residence in Denmark were invited by a secure electronic mail service. Invited individuals received up to five inquiries: (i) web invitation, (ii) web reminder, (iii) paper invitation including a questionnaire and a prepaid return envelope, (iv) paper reminder, and (v) paper reminder including a questionnaire and a prepaid return envelope. The cumulative response proportions after first-, second-, third-, fourth-, and fifth inquiries were 19.1%, 28.9%, 37.2%, 39.3%, and 42.0%, respectively. In general, third, fourth, and fifth mailing respondents were more often men, at younger ages, with non-Western backgrounds, and unmarried compared to first mailing respondents. Furthermore, third, fourth, and fifth mailing respondents were in general found to have less favorable health behavior than first mailing respondents, but also a lower prevalence of fair or poor self-rated health and long-standing health problems. In conlusion, reminders are an effective way to increase the response proportion. Furthermore, the use of reminders was found to decrease the magnitude of non-response bias; however, the decrease was small due to the low number of individuals responding after fourth and fifth inquiries.

Long-term effectiveness of SBIRT by outreach visits on subsequent alcohol treatment utilization among inpatients from general hospital: a 36-months follow-up

Aim To investigate the long-term effect of Screening, Brief Intervention, and Referral to Treatment (SBIRT) on alcohol treatment utilization among general hospital inpatients. Methods This 36-month follow-up of a randomized controlled trial included general hospital inpatients who were screened using the Alcohol Use Disorder Identification Test (AUDIT). Patients with an AUDIT score of 8+ were included. Patients were randomized to either SBIRT (Relay) or treatment as-usual (TAU). Outcome was attendance at a specialized outpatient treatment institution or prescription of pharmacological alcohol treatment in general practice. Using the Danish Civil Registration System, patients were followed in the Danish National Patient Registry, Danish National Alcohol Treatment Register, and the Danish National Prescription Registry. Data was collected up to 36 months after discharge. Results The study population consisted of 258 patients in the Relay group and 303 patients in the TAU group. In the Relay group, 36 (14.0%) patients received treatment versus 23 (7.6%) in the TAU group. Patients in the Relay group had higher odds for receiving treatment compared to the TAU group (OR: 1.97, 95% CI: 1.1–3.4, p = 0.01). Significantly more patients in the Relay group scored 16+ on the AUDIT and had already tried to change their alcohol consumption (both p < 0.01). Adjusted for potential confounders, the effect of the Relay intervention was reduced (OR: 1.37, 95%CI: 0.7–2.5, p = 0.31). Conclusions This study did not find evidence that SBIRT is better than TAU at sustaining significant long-term alcohol treatment utilization after discharge among inpatients from general hospital.

Evaluating the Impact of Moderate and Severe Varicella Infections on Danish Children Under 18 Years Old: A Comprehensive Analysis From 2015 to 2023.

Varicella (chickenpox) caused by varicella-zoster virus (VZV) is a highly contagious pediatric disease. While it typically manifests as a mild disease, complications leading to hospitalization are not uncommon. Knowing the current disease burden, seasonality and risk groups is pivotal for evidence-based decisions on the introduction of a varicella vaccine. Using the Danish National Patient Register and medical helpline records from the Capital Region, we estimated the burden of VZV infections among children younger than 18 years in Denmark from 2015 to June 2023. We identified 14,443 cases with annual incidence rates of 325/100,000 children for mild-to-moderate varicella cases (helpline calls), 35/100,000 for moderate-to-severe cases (outpatients) and 10/100,000 for severe cases (hospitalized). Mild cases were most prevalent in children aged 1-4 years, while moderate-to-severe cases were most prevalent among infants <1 year old. Among hospitalized cases, 23.2% had underlying diseases and 47.3% experienced complications. In April 2022, rapid surge in all types of VZV cases occurred, where admissions surpassed the prepandemic level. This study documents that varicella is highly prevalent among Danish young children. Mild-to-moderately severe cases strain healthcare, causing increased helpline calls and posing a persistent hospitalization risk, especially for infants and children with underlying conditions.

The Danish National Hospital Medication Register: A Resource for Pharmacoepidemiology.

The Danish National Hospital Medication Register (DHMR), one of the first nationwide in-hospital medication registries in the world, contains detailed information on medication administration and dispensing. To provide an overview of the information recorded in the DHMR and to highlight its strengths and limitations as a pharmacoepidemiological research tool. We reviewed the registry´s geographic and clinical specialty coverage and medications recorded according to the main groups of the Anatomical Therapeutic Chemical classification system. From May 2018 through December 2023, the DHMR recorded data on more than 1.9 million unique patients from all approximately 50 public hospitals and associated hospital outpatient clinics, totaling 105.3 million recordings of hospital medication use. The registry records detailed data on the indication for medication, medication type, pharmaceutical form, dosage, and administration time, collected through electronic medical record systems. Although the data quality has not yet been evaluated in a scientific context, some potential limitations are known. These include regional differences in the data collection and a lack of data from certain clinical specialties. Due to its recent establishment in 2018, the registered number of patients treated may still be limited for some rarely used medications. The DHMR is an important new resource for research in Denmark. Combined with the Danish National Prescription Registry, which covers all community pharmacies, it offers access to accurate data on medication exposure in the Danish population. Users should be aware of potential issues with lack of information before 2018.

Association of Psychotropic Prescriptions With Non-Registered Indications and the Risk of Mortality in Older Adults: A Danish Nationwide Cohort Study.

Psychotropic drug use is common in older adults, with off-label use reported despite limited understanding of the safety outcomes compared to on-label use. Incomplete recordings of treatment indications in the Danish National Prescription Register (DNPR) raise concerns about potential off-label medication use, particularly among older adults. We, therefore, investigated the association between psychotropic prescriptions with non-registered indications in DNPR and the 1-year all-cause mortality in older adults, including subgroups with any psychiatric disorders, depression, or dementia. Register-based cohort study following all older adults (≥ 65) who redeemed a first-time (since 1995) prescription of either antidepressants, antipsychotics, or benzodiazepine during 2006-2017. Redemption of a prescription with non-registered indications in the DNPR was the exposure. The outcome, 1-year all-cause mortality was analyzed using Poisson regression, estimating incidence rate ratios with 95% confidence intervals, adjusting for socio-demographics and clinical factors. 32% of prescriptions filled by 202,067 individuals for antidepressants, 37% of 97,387 for antipsychotics, and 22% of 130,471 for benzodiazepines had non-registered indications. No significant differences in mortality rates were found for antidepressants and antipsychotics with non-registered indications, while higher mortality rates were associated with benzodiazepines, mitigated when excluding individuals receiving intravenous administrations representing end-of-life treatment. The results remained consistent in subgroup analyses in patients with any psychiatric disorders, depression, or dementia and further stratified analyses by sex and age. We found that while psychotropic prescriptions with non-registered indications in DNPR were prevalent in older adults, they were not associated with excess mortality.

Influence of Comorbidities on Health-Related Quality of Life in Alcohol-Related Liver Disease: A Population-Based Survey

Extrahepatic comorbidities are common in alcohol-related liver disease (ALD). We examined associations between burden of comorbidities, alcohol, and smoking with low health-related quality of life (HRQoL) among patients with ALD. Patients with ALD and matched comparators were identified among respondents of the Danish National Health Survey waves in 2010-2017. Survey data included generic measures of physical and mental HRQoL (12-Item Short Form Health Survey), comorbidities, alcohol and smoking. Low HRQoL in ALD was defined as ≥1.5 SD worse than the average HRQoL in the comparators. Odds ratios (ORs) of low HRQoL were estimated with multivariable logistic regression, adjusting for potential confounders. We included 772 ALD patients, 53% of whom had cirrhosis; 37% had low physical HRQoL and 22% had low mental HRQoL. Disc herniation (found in 21%), osteoarthritis (36%), chronic obstructive pulmonary disease (11%), cancer (6%), stroke (1%), and psychiatric disease (9%) were associated with low physical and/or mental HRQoL, whereas alcohol use disorder (24%), diabetes (19%), acute myocardial infarction (1%), hypertension (34%), and osteoporosis (12%) were not. For example, osteoarthritis was associated with low physical (OR, 2.17; 95% confidence interval, 1.54-3.05) and low mental (OR, 1.91; 95% confidence interval, 1.27-2.88) HRQoL. For lifestyle factors, drinking ≥20 units/week was associated with low physical and smoking ≥20 cigarettes/day with low mental HRQoL when compared with abstainers and nonsmokers, respectively. Common comorbidities including chronic obstructive pulmonary disease, musculoskeletal disease, and psychiatric disease are associated with low HRQoL in ALD, independent of liver disease severity, and so are alcohol consumption and smoking. These findings highlight the importance of multidisciplinary management of patients with ALD.

Atopic dermatitis in childhood and pubertal development: A nationwide cohort study

BackgroundAtopic dermatitis (AD) might delay puberty, but research is lacking. ObjectiveTo investigate the association between AD and puberty. MethodsA sub-cohort within the Danish National Birth Cohort includes children born between 2000-2003, with mothers reporting doctor-diagnosed AD at 6 months, 18 months, and 7 years old. The National Patient Registry identified hospital-diagnosed AD. From 11 years, the children give half-yearly information on pubertal development. We estimated the mean age difference in months at attaining Tanner stages 1–5 and the development of axillary hair, acne, first ejaculation, voice break, and age at menarche, using an interval-censored regression model. ResultsIn total, 15,534 children participated, 21.5% had self-reported doctor-diagnosed AD and 0.7% had hospital-diagnosed AD. For girls with self-reported doctor-diagnosed AD, the average age difference at reaching all pubertal milestones was 0.0 months (95% CI: -0.8; 0.8), and for hospital-diagnosed AD, it was -0.3 months (95% CI: -5.4; 4.8). For boys, the average age difference was 0.1 months (95% CI: -0.6; 0.9), and -0.3 months (95% CI: -3.6; 3.0), respectively. LimitationsNo information on treatment was available. Missing data on covariates (<5%) was not addressed. ConclusionNo association was found between AD and puberty in either girls or boys.

Data Resource Profile: The Danish National Hospital Medicine Register.

The Danish National Hospital Medicine Register (SMR) was established in 2018 to centralize and standardize medication use data across Danish hospitals. This task was previously managed by individual hospital registration systems across the five regions. This initiative addresses the need for a unified, detailed understanding of hospital medication use to monitor healthcare delivery, improve patient outcomes, and support research. The SMR has comprehensive coverage of medication use in hospitals in Denmark, offering a national overview that was previously missing. It features high-quality data, with efforts to ensure completeness and accuracy. The data collected encompasses key categories such as types of medications, doses, administration times and practices, and specific treatment indications. The SMR facilitates collaboration among Danish regional health authorities and national health agencies, enhancing decision-making and planning across the regions. The establishment of the SMR has provided a centralized and standardized database for medication use across Danish hospitals. This unification replaces the previously fragmented systems, allowing for better monitoring of healthcare delivery and supporting improvements in patient outcomes and research. The upcoming version of the SMR will include data on dispensed outpatient medications, covering most medication use across all hospitals. This expansion will further enhance the register's utility for health authorities, clinicians, and researchers by providing a more comprehensive understanding of medication use in Denmark.

Economic, cultural, and social inequalities in potentially inappropriate medication: A nationwide survey- and register-based study in Denmark.

Potentially inappropriate medication (PIM) is associated with negative health outcomes and can serve as an indicator of treatment quality. Previous studies have identified social inequality in treatment but often relied on narrow understandings of social position or failed to account for mediation by differential disease risk among social groups. Understanding how social position influences PIM exposure is crucial for improving the targeting of treatment quality and addressing health disparities. This study investigates the association between social position and PIM, considering the mediation effect of long-term conditions. This cross-sectional study utilized data from the 2017 Danish National Health Survey, including 177,495 individuals aged 18 or older. Data were linked to national registers on individual-level. PIM was defined from the STOPP/START criteria and social position was assessed through indicators of economic, cultural, and social capital (from Bourdieu's Capital Theory). We analyzed odds ratios (ORs) and prevalence proportion differences (PPDs) for PIM using logistic regression, negative binomial regression, and generalized structural equation modeling. The models were adjusted for age and sex and analyzed separately for indicators of under- (START) and overtreatment (STOPP). The mediation analysis was conducted to separate direct and indirect effects via long-term conditions. Overall, 14.7% of participants were exposed to one or more PIMs, with START PIMs being more prevalent (12.5%) than STOPP PIMs (3.1%). All variables for social position except health education were associated with PIM in a dose-response pattern. Individuals with lower wealth (OR: 1.85 [95% CI 1.77, 1.94]), lower income (OR: 1.78 [95% CI 1.69, 1.87]), and lower education level (OR: 1.66 [95% CI 1.56, 1.76]) exhibited the strongest associations with PIM. Similar associations were observed for immigrants, people with low social support, and people with limited social networks. The association with PIM remained significant for most variables after accounting for mediation by long-term conditions. The disparities were predominantly related to overtreatment and did not relate to the number of PIMs. The study's main limitation is the risk of reverse causation due to the complex nature of social position and medical treatment. The findings highlight significant social inequalities in PIM exposure, driven by both economic, cultural, and social capital despite a universal healthcare system. Understanding the social determinants of PIM can inform policies to reduce inappropriate medication use and improve healthcare quality and equity.