A register and questionnaire study of long-term general health symptoms following SARS-CoV-2 vaccination in Denmark.

Many individuals who refuse COVID-19 vaccination have concerns about long-term side effects. Here, we report findings on self-reported symptoms from a Danish survey- and register study. The study included 34,868 vaccinated primary course recipients, 95.8% of whom received mRNA vaccines, and 1,568 unvaccinated individuals. Participants had no known history of SARS-CoV-2 infection. Using g-computation on logistic regression, risk differences (RDs) for symptoms between vaccinated and unvaccinated persons were estimated with adjustments for possible confounders. Within six weeks after vaccination, higher risks were observed for physical exhaustion (RD 4.9%, 95% CI 1.1% to 8.4%), fever or chills (RD 4.4%, 95% CI 2.1% to 6.7%), and muscle/joint pain (RD 7.0%, 95% CI 3.1% to 10.7%), compared to unvaccinated individuals. Beyond twenty-six weeks, risks were higher among the vaccinated for sleeping problems (RD 3.0, 95% 0.2 to 5.8), fever or chills (RD 2.0, 95% CI 0.4 to 3.6), reduced/altered taste (RD 1.2, 95% CI 0.2 to 2.3) and shortness of breath (RD 2.6, 95% CI 0.9 to 4.0). However, when examining pre-omicron responses only, the difference for reduced/altered taste was significant. As expected, the risk of experiencing physical exhaustion, fever or chills, and muscle/joint pain was higher among persons who responded within six weeks of completing the primary course. No significant differences were observed for the 7-25-week period after vaccination. Associations for the period beyond 26 weeks must be interpreted with caution and in the context of undetected SARS-CoV-2 infection, wide confidence intervals, and multiple testing. Overall, we observe no concerning signs of long-term self-reported physical, cognitive, or fatigue symptoms after vaccination.

Machine learning identifies risk factors associated with long-term sick leave following COVID-19 in Danish population.

BACKGROUND: Post COVID-19 condition (PCC) can lead to considerable morbidity, including prolonged sick-leave. Identifying risk groups is important for informing interventions. We investigated heterogeneity in the effect of SARS-CoV-2 infection on long-term sick-leave and identified subgroups at higher risk. METHODS: We conducted a hybrid survey and register-based retrospective cohort study of Danish residents who tested positive for SARS-CoV-2 between November 2020 and February 2021 and a control group who tested negative, with no known history of SARS-CoV-2. We estimated the causal risk difference (RD) of long-term sick-leave due to PCC and used the causal forest method to identify individual-level heterogeneity in the effect of infection on sick-leave. Sick-leave was defined as >4 weeks of full-time sick-leave from 4 weeks to 9 months after the test. RESULTS: Here, in a cohort of 88,818 individuals, including 37,482 with a confirmed SARS-CoV-2 infection, the RD of long-term sick-leave is 3.3% (95% CI 3.1% to 3.6%). We observe a high degree of effect heterogeneity, with conditional RDs ranging from -3.4% to 13.7%. Age, high BMI, depression, and sex are the most important variables explaining heterogeneity. Among three-way interactions considered, females with high BMI and depression and persons aged 36-45 years with high BMI and depression have an absolute increase in risk of long-term sick-leave above 10%. CONCLUSIONS: Our study supports significant individual-level heterogeneity in the effect of SARS-CoV-2 infection on long-term sick-leave, with age, sex, high BMI, and depression identified as key factors. Efforts to curb the PCC burden should consider multimorbidity and individual-level risk.

The burden of post COVID-19 condition varies from one person to another due to individual characteristics such as age, sex, and having single- or multiple pre-existing conditions. Sick leave following initial SARS-CoV-2 infection is one way to quantify this burden. However, to what extent the combinations of these characteristics impact the risk of post-acute sick leave is not well understood. Here, using a machine learning method, we observe that persons infected with SARS-CoV-2 have an increased risk of taking long-term sick leave compared to persons with no history of infection. Age, high BMI, sex, and depression explained substantial effect variation on the risk of long-term sick leave after infection. This knowledge may be used to help inform patient-targeted interventions.

A hybrid register and questionnaire study of Covid-19 and post-acute sick leave in Denmark.

Post-acute sick leave is an underexplored indicator of the societal burden of SARS-CoV-2. Here,  we report findings about self-reported sick leave and risk factors thereof from a hybrid survey and register study, which include 37,482 RT-PCR confirmed SARS-CoV-2 cases and 51,336 test-negative controls who were tested during the index- and alpha-dominant waves. We observe that an additional 33 individuals per 1000 took substantial sick leave following acute infection compared to persons with no known history of infection, where substantial sick leave is defined as >1 month of sick leave within the period 1-9 months after the RT-PCR test date. Being female, 50-65 years, or having certain pre-existing health conditions such as obesity, chronic lung diseases, and fibromyalgia each increase risk for taking substantial sick leave. Altogether, these results may help motivate improved diagnostic and treatment options for persons living with post-Covid conditions.

The implementation of systematic monitoring of cognition in children with cerebral palsy in Sweden and Norway.

PURPOSE: Children with cerebral palsy (CP) are at risk of cognitive impairments and need to be cognitively assessed to allow for individualized interventions, if applicable. Therefore, a systematic protocol for the follow-up of cognition in children with CP, CPCog, with assessments offered at five/six and 12/13 years of age, was developed. This report presents and discusses assessment practices in Sweden and Norway following the introduction of CPCog and a quality improvement project in Norway aimed at increasing the number of children offered cognitive assessments. MATERIALS AND METHODS: A questionnaire investigating assessment practices was sent to pediatric habilitation centers in Sweden and Norway. In Norway, the habilitation centers also participated in a quality improvement project aimed at increasing adherence to the CPCog protocol. RESULTS: Of the respondents, 64-70% report that they assess cognition in children with all degrees of motor impairment, and 70-80% assess at the ages recommended in CPCog. Following the quality improvement project in Norway, the percentage of children assessed increased from 34 to 62%. CONCLUSIONS: The findings illustrate that the provision of information is not sufficient to change practice. Implementation of new re/habilitation procedures is aided by targeting health care practices individually.Implications for rehabilitationChildren with cerebral palsy (CP) have increased risk of cognitive impairments that require intervention.Assessments of cognition should be offered to all children with CP because the nature of cognitive impairments may vary.Introducing a follow-up protocol of how and when to perform cognitive assessments is a step towards ensuring equal access to the services for all children with CP.A quality improvement project might be a viable method for implementing a protocol into everyday clinical practice.

Cognitive assessments among children with cerebral palsy in Sweden and the use of augmentative and alternative communication and interpreters: a cross-sectional registry study.

PURPOSE: Children with cerebral palsy (CP) have an increased risk of cognitive difficulties and should be offered cognitive assessments. In Sweden, the CPCog protocol recommends children with CP undergo cognitive assessments at the start of primary and secondary school. To assess children with CP can be challenging, in particular when children are non-vocal or do not speak the local language. In such instances, augmentative and alternative communication (AAC) and qualified medical interpreters should be considered. The purpose of this study was to monitor the implementation and equitable delivery of the CPCog protocol in Sweden between the years 2017-2020. MATERIALS AND METHODS: In this cross-sectional study, registry data were extracted from the combined follow-up program and national registry for individuals with CP (CPUP), and a convenience sample of psychologists responded to an online survey. RESULTS AND CONCLUSIONS: Each year, less than 5% of eligible children had registered cognitive assessments in CPUP. There was underuse of AAC during assessments and a discrepancy between the registered versus reported use of interpreters. Psychologists perceived AAC as more reliable for cognitive assessments than interpreters. Greater availability of and capacity to offer cognitive assessments in other formats and languages could help increase test accessibility for all children with CP.Implications for RehabilitationThe cognitive assessment of children with cerebral palsy (CP) is a complex but important issue within disability and re/habilitation.Individualized cognitive assessments should be offered and carried out by psychologists.Rehabilitation centers should strive to be inclusive through reliable test adaptations for functional abilities, means of communication, and language.Greater availability of- and capacity to offer cognitive assessments in more formats and languages could help increase test accessibility for children with disabilities.

The role of mentalizing capacity and ecological language diversity on irony comprehension in bilingual adults.

Diverse bilingual experiences have implications for language comprehension, including pragmatic elements such as verbal irony. Irony comprehension is shaped by an interplay of linguistic, cognitive, and social factors, including individual differences in bilingual experience. We examined the relationship between individual differences related to bilingualism, specifically, the capacity to understand others' mental states and ambient exposure to language diversity, on irony comprehension. We tested 54 healthy bilingual adults, living in a linguistically diverse region-Montréal, Canada-on an irony comprehension task. This task involved reading positive and negative short stories that concluded with an ironic or literal statement, which were rated on appropriateness and perceived irony. While both irony forms were rated as less appropriate and more ironic than literal statements, ironic criticisms (following a negative context) were rated as more appropriate and higher in perceived irony than ironic compliments (following a positive context). As expected, these ratings varied as a function of individual differences in mentalizing and neighborhood language diversity. Greater mentalizing patterned with more appropriate ratings to ironic statements in high language diversity neighborhoods and with less appropriate ratings to ironic statements in low language diversity neighborhoods. Perceived irony ratings to ironic compliments increased with mentalizing as neighborhood language diversity increased. These results indicate that pragmatic language comprehension and its social cognitive underpinnings may be environmentally contextualized processes.

Bridging people and perspectives: General and language-specific social network structure predict mentalizing across diverse sociolinguistic contexts.

Mentalizing, or reasoning about others' mental states, is a dynamic social cognitive process that aids in communication and navigating complex social interactions. We examined whether exposure to diverse perspectives, afforded by occupying influential social network positions, predicted bilingual adults' performances on a behavioral mentalizing rating task in regions of high and low linguistic diversity. We calculated the degree to which respondents' social network position generally bridged unconnected others (i.e., general betweenness) and specifically bridged language communities (i.e., language betweenness). General betweenness predicted mentalizing performance regardless of region, whereas language betweenness only predicted mentalizing in a high linguistic diversity region, where bilingualism is ubiquitous and mentalizing to resolve perspective differences on the basis of language may be an adaptive cognitive strategy. These results indicate that human cognition is sensitive to social context and adaptive to the sociolinguistic demands of the broader environment. (PsycInfo Database Record (c) 2022 APA, all rights reserved).