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6 to 88.9 kJ mol-1 for Fe3+-reactions and from 81.0 to 52.2 kJ mol-1 for Fe2+-reactions. Therefore, it was found that cysteine decreases the energy barrier so as to improve Fenton-based decolorization reactions.Aims To investigate potential differences between participants and dropouts in the 2005 follow-up of the Scania Public Health Cohort Study regarding the prevalence of commonly studied health determinants and whether these factors had differential associations with three health outcomes all-cause mortality and purchase of prescribed cardiovascular or psychotropic drugs during a 10-year follow-up period. Methods The Scania Public Health Cohort was initiated in 1999/2000, with randomly invited participants aged 18-80 years from the general population (58% participation). Questionnaire data from 10,462 participants and 2576 dropouts in the 2005 follow-up (80% participation) were linked to public registers on mortality and purchase of prescribed drugs. Results Age, male gender, being born abroad, low educational level, low self-rated mental and general health and daily smoking were all related to dropping out. The 10-year mortality was higher among dropouts (13.4% versus 11.9%; age-adjusted hazard ratio 1.6, 95% confidence interval 1.4-1.8). In 13 out of 18 analyses, similar associations between health determinants and outcomes were found across participants and dropouts. However, being born outside of Sweden was associated with higher risks for all three poor health outcomes among participants, but not so among dropouts. Conclusions Despite selective participation at follow-up, there was little evidence of selection bias, insofar as estimated associations were generally similar across participants, dropouts and the whole cohort. This finding is important for the assessment of the validity of prospective findings from this cohort and similar ones, where the loss of individuals at consecutive follow-ups of exposure is non-negligible.The present study investigated the concomitants of menopause-specific quality of life among premenopausal and postmenopausal women. Based on the Wilson and Cleary model of quality of life, this cross-sectional study recruited 329 women of age 40-65 years following operational convenience. The study was conducted in the office of the Korea Population, Health and Welfare Association (KPHWA) in Incheon, South Korea. Data collected on sociodemographic characteristics, social support, biological/physiological characteristics, the Pittsburgh Sleep Quality Index (PSQI-K), and self-rated health. Menopause-specific quality of life questionnaire (MENQOL) was used in this study. Hierarchical multiple linear regression analysis was performed. The study found that social support and self-rated health were negatively correlated with MENQOL in premenopausal women, while the income level and self-rated health were negatively associated with MENQOL in postmenopausal women. Sleep quality was positively correlated with MENQOL in both premenopausal and postmenopausal women. The study results indicate the need for tailored approaches based on menopausal status. Especially, social support may help improve the MENQOL of premenopausal women, while in postmenopausal women, improved sleep quality may enhance their menopause-specific quality of life.Aim The aim of the study is to encourage further research initiatives and collaborations based on Norwegian Armed Forces Health Registry (NAFHR) data by presenting basic information on the data contained therein. Methods We describe how conscription board health examinations (CBHEs) are carried out, how results are recorded in the NAFHR, and the completeness of NAFHR data that are electronically available for research purposes. Results In December 2018, the NAFHR contained data on nearly 1.5 million Norwegian citizens (95% men) who attended CBHE in 1968-2018 at the age of 17-19 years. The percentage of persons included from each birth cohort has varied as the Armed Forces' personnel requirements and filing procedures have changed, increasing from 73% of eligible men born in 1950 to 95% of eligible men born in 1960-1991. In 2010 a preselection of candidates was implemented wherefore less than half of men born in 1992-2000 are registered in the NAFHR. Information on aerobic fitness, cognitive general ability, height and weight is registered for approximately 95% of individuals included in the NAFHR. The NAFHR contains more detailed health information for CBHEs that took place as from 1980, and information included from 2011 onwards is the most detailed. Unique, national personal identification numbers may be used to link the NAFHR to other health registries or data sources for public health research. Conclusions The NAFHR contains CBHE data on the majority of Norwegian men and a substantial number of women born since 1950. NAFHR data represent a valuable resource for research collaborations.Pre-procedural evaluation of central veins prior to cannulation with ultrasound is essential to reduce the complication rates as well as to increase the success rates. The left brachiocephalic vein has been suggested to be considered as first choice in infants including the neonates due to its larger diameter and ease of access with supraclavicular, ultrasound-guided, in-plane technique. There are few studies on neonates and infants comparing the diameter of brachiocephalic vein with internal jugular vein being its most common alternative. The aim of the present report is to share our observations pertaining to the pre-procedural measurements of the diameters of left internal jugular vein and brachiocephalic vein in infants less then 1 year. The measurements were analysed in accordance with the weights of the infants ( less then 2500 g and ⩾2500 g). [https://www.selleckchem.com/products/LY2228820.html see more] In infants less then 2500 g, the brachiocephalic vein was larger than the internal jugular vein (4.0 ± 0.7 (3.2-5.2) mm vs 3.2 ± 0.7 (1.9- 4.3) mm, p = 0.032), whereas the diameters of two major veins were similar in infants ⩾2500 g (4.8 ± 1.2 (2.3-6.4) mm vs 5.1 ± 0.9 (2.8-6.7) mm, p = 0.363). Our observations support the suggestion of the brachiocephalic vein to be considered as the first choice for large-bore cannulation due to its larger diameter as well as its other advantages, especially in neonates less then 2500 g.