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- Anckarsäter, Henrik, 1966, et al.
(author)
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The Child and Adolescent Twin Study in Sweden (CATSS).
- 2011
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In: Twin Research and Human Genetics. - : Cambridge University Press (CUP). - 1832-4274 .- 1839-2628. ; 14:6, s. 495-508
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Journal article (peer-reviewed)abstract
- The Child and Adolescent Twin Study in Sweden (CATSS) is an ongoing longitudinal twin study targeting all twins born in Sweden since July 1, 1992. Since 2004, parents of twins are interviewed regarding the children's somatic and mental health and social environment in connection with their 9th or 12th birthdays (CATSS-9/12). By January 2010, 8,610 parental interviews concerning 17,220 twins had been completed, with an overall response rate of 80%. At age 15 (CATSS-15) and 18 (CATSS-18), twins and parents complete questionnaires that, in addition to assessments of somatic and mental health, include measures of personality development and psychosocial adaptation. Twin pairs in CATSS-9/12 with one or both twins screening positive for autism spectrum disorders, attention deficit/hyperactivity disorder, tic disorders, developmental coordination disorder, learning disorders, oppositional defiant disorder, conduct disorder, obsessive-compulsive disorder, and/or eating problems have been followed with in-depth questionnaires on family, social environment and personality, and subsequently by clinical assessments at age 15 together with randomly selected population controls, including 195 clinically assessed twin pairs from the first 2 year cohorts (CATSS-15/DOGSS). This article describes the cohorts and study groups, data collection, and measures used. Prevalences, distributions, heritability estimates, ages at onset, and sex differences of mental health problems in the CATSS-9/12, that were analyzed and found to be overall comparable to those of other clinical and epidemiological studies. The CATSS study has the potential of answering important questions on the etiology of childhood mental health problems and their role in the development of later adjustment problems.
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| 2. |
- Dapi Nzefa, Léonie, 1971-, et al.
(author)
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After giving birth to a baby, breastfeeding becomes your responsibility : Infant feeding perceptions and practices among women in Yaoundé, Bamenda and Bandja, Cameroon, Africa
- 2018
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In: International Research Journal of Public and Environmental Health. - : Journal Issues Limited. - 2360-8803 .- 2360-8803. ; 5:3, s. 38-45
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Journal article (peer-reviewed)abstract
- The Ministry of Public Health of Cameroon advises mothers to follow the World Health Organization’s recommendation of exclusive breastfeeding during the first six months of life and to continue breastfeeding along with appropriate complementary foods up to two years or beyond. Despite these recommendations, malnutrition due to inadequate feeding practices is still prevalent in Cameroon. Therefore, this study aims to explore infant feeding perceptions and identify factors influencing infant feeding practices in Cameroon. Forty-nine women aged 19 to 38 who had infants aged 6 days to 15 months were purposively selected from hospitals during the vaccination days and interviewed until saturation. The research tools included six qualitative group interviews, with each group comprising 6 to 10 women. The study was conducted in the rural area of Bandja and the urban areas of Yaoundé and Bamenda. Data were analysed using content analysis. In the study, breastfeeding was agreed upon as the best way to feed infants and was commonly practised for 1 to 2 years. Nevertheless, few infants were breastfed exclusively. Complementary foods were often nutritionally inadequate; many children were not given fruit, vegetables or foods of animal origin on a daily basis. Cultural beliefs, tradition, community norms and low educational and economic levels negatively influenced the implementation of appropriate infant feeding recommendations. The short duration of exclusive breastfeeding and the poor food diversity are the main problems. In response, it is necessary to strengthen the position of women, increase the period of maternal leave, introduce sustainable and practical education for both parents about breastfeeding, and provide good, local complementary foods.
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| 3. |
- Holmstrom, Jesper, et al.
(author)
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Do we Read what we Share? Analyzing the Click Dynamic of News Articles Shared on Twitter
- 2019
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In: PROCEEDINGS OF THE 2019 IEEE/ACM INTERNATIONAL CONFERENCE ON ADVANCES IN SOCIAL NETWORKS ANALYSIS AND MINING (ASONAM 2019). - New York, NY, USA : Institute of Electrical and Electronics Engineers (IEEE). - 9781450368681 ; , s. 420-425
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Conference paper (peer-reviewed)abstract
- News and information spread over social media can have big impact on thoughts, beliefs, and opinions. It is therefore important to understand the sharing dynamics on these forums. However, most studies trying to capture these dynamics rely only on Twitters open APIs to measure how frequently articles are shared/retweeted, and therefore do not capture how many users actually read the articles linked in these tweets. To address this problem, in this paper, we first develop a novel measurement methodology, which combines the Twitter steaming API, the Bitly API, and careful sample rate selection to simultaneously collect and analyze the timeline of both the number of retweets and clicks generated by news article links. Second, we present a temporal analysis of the news cycle based on five-day-long traces (containing both clicks and retweet over time) for the news article links discovered during a seven-day period. Among other things, our analysis highlights differences in the relative timelines observed for clicks and retweets (e.g., retweet data often lags and underestimates the bias towards reading popular links/articles), and helps answer important questions regarding differences in how age-based biases and churn affect how frequently news articles shared on Twitter are accessed over time.
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| 4. |
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| 5. |
- Johansson Buvarp, Dongni, et al.
(author)
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Physical Activity Trajectories and Functional Recovery After Acute Stroke Among Adults in Sweden.
- 2023
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In: JAMA network open. - : American Medical Association (AMA). - 2574-3805. ; 6:5
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Journal article (peer-reviewed)abstract
- The optimum level and timing of poststroke physical activity interventions to enhance functional recovery remain unclear.To assess the level of physical activity in the first 6 months after stroke among individuals with similar physical activity patterns over time and to investigate the association between physical activity trajectories and functional recovery at 6 months after stroke.This cohort study obtained data from the Efficacy of Fluoxetine-a Randomized Controlled Trial in Stroke, which was conducted in 35 stroke and rehabilitation centers across Sweden from October 2014 to June 2019. Adult participants (aged >18 years) were recruited between 2 and 15 days after stroke onset and followed up for 6 months. Participants who withdrew or were lost to follow-up were excluded from the longitudinal analysis. Data analyses were performed between August 15 and October 28, 2022.Physical activity was assessed at 1 week, 1 month, 3 months, and 6 months. Multiple factors associated with physical activity trajectories were investigated. Association of the distinct trajectories with functional recovery was assessed in multivariable logistic regression.The primary outcomes were the distinct physical activity trajectories over time, which were identified using group-based trajectory modeling. The secondary outcome was the functional recovery at 6 months after stroke, which was assessed using the modified Rankin Scale.Of the 1367 included participants (median [IQR] age, 72 years [65-79] years; 844 males [62%]), 2 distinct trajectory groups were identified: increaser (n=720 [53%]) and decreaser (647 [47%]). The increaser group demonstrated a significant increase in physical activity level (mean difference, 0.27; linear slope β1=0.46; P<.001) and sustained it at light intensity from 1 week to 6 months, whereas the decreaser group showed a decline in physical activity and eventually became inactive (mean difference, -0.26; linear slope β1=1.81; P<.001). Male participants and those with normal cognition had higher odds of being in the increaser group, regardless of stroke severity. Increasing physical activity and sustaining it at light intensity were associated with a good functional outcome at 6 months (adjusted odds ratio, 2.54; 99% CI, 1.72-3.75; P<.001).Results of this study suggest that increased physical activity was associated with functional recovery 6 months after stroke. Interventions targeting individuals with decreasing physical activity in the subacute phase of stroke may play a role in improved functional outcomes.
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| 6. |
- Törn, Peggy, et al.
(author)
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Childhood neurodevelopmental problems and adolescent bully victimization : population-based, prospective twin study in Sweden
- 2015
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In: European Child and Adolescent Psychiatry. - New York, USA : Springer. - 1018-8827 .- 1435-165X. ; 24:9, s. 1049-1059
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Journal article (peer-reviewed)abstract
- Bully victimization is a common problem among children with neurodevelopmental disorders, including attention deficit/hyperactivity disorder and autism spectrum disorder. Previous research was mostly cross-sectional and seldom accounted for co-morbid psychopathology, which makes it difficult to draw conclusions about causality and specificity of any association. Using a genetically informative prospective design, we investigated the association between various neurodevelopmental problems (NDPs) in childhood and bully victimization in adolescence, and the relative contributions of genetic and environmental factors to this association. We obtained parent-reports of NDPs at age 9/12 years and self-reported bully victimization at age 15 for 3,921 children participating in the The Child and Adolescent Twin Study in Sweden (CATSS). Structural equation modelling was used to control for NDP co-morbidity and bully victimization at baseline. Cholesky decomposition was used to analyse genetic and environmental contributions to observed associations. Because most of the NDPs were associated to later bully victimization, a common effect of all NDPs was summarized into a general NDP factor. Controlling for this general factor, only problems with social interaction and motor control uniquely predicted subsequent bully victimization in girls. General and unique associations were influenced by both genetic and unique environmental factors. NDPs in general and social interaction and motor problems in particular predicted later bully victimization. The longitudinal design and twin analyses indicated that these associations might be causal. Knowledge of these vulnerabilities may be important when designing risk assessment and prevention strategies.
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| 7. |
- Virtanen, Marianna, et al.
(author)
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Work disability before and after a major cardiovascular event : a ten-year study using nationwide medical and insurance registers
- 2017
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In: Scientific Reports. - : Nature Publishing Group. - 2045-2322. ; 7
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Journal article (peer-reviewed)abstract
- We examined the trajectories of work disability before and after IHD and stroke events. New IHD (n = 13521) and stroke (n = 7162) cases in 2006-2008 were retrieved from nationwide Swedish hospital records and their annual work disability days five years before and after the date of diagnosis were retrieved from a nationwide disability register. There was no pre-event differences in disability days between the IHD and stroke cases and five years prior to the event, they were close to those observed in the general population. In the first post-event year, the adjusted mean days increased to 83.9 (95% CI 80.6-86.5) in IHD; to 179.5 (95% CI 172.4-186.8) in stroke, a six-fold increase in IHD and 14-fold in stroke. Work disability leveled off among the IHD cases but not among those who had stroke. The highest disability levels for the fifth post-event year after a stroke event was associated with pre-existing diabetes (146.9), mental disorder (141.2), non-employment (137.0), and immigrant status (117.9). In a working-age population, the increase in work disability after a cardiovascular event decreases close to the pre-event level in IHD but remains particularly high after stroke; among patients with comorbid depression or diabetes, immigrants, and those not in employment.
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