10 research outputs found

    PM10 and children's respiratory symptoms and lung function in the PATY study

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    Studies of the impact of long-term exposure to outdoor air pollution on prevalence of respiratory symptoms and lung function in children have yielded mixed results, partly related to differences in study design, exposure assessment, confounder selection and data analysis.We assembled respiratory health and exposure data for more than 45,000 children from comparable cross-sectional studies in 12 countries. Eleven respiratory symptoms were selected for which comparable questions were asked. Spirometry was performed in about half of the children. Exposure to air pollution was mainly characterized by annual average concentrations of particulate matter smaller than 10 mum (PM10) measured at fixed sites within the study areas.Positive associations were found between the average PM10 concentration and the prevalence of phlegm (Odds Ratio per 10 mug.m(-3) 1.15, 95% Confidence Interval 1.02-1.30), hay fever (1.20 (0.99-1.46)), bronchitis (1.08 (0.98-1.19)), morning cough (1.15 (1.02-1.29)) and nocturnal cough (1.13 (0.98-1.29)). There were no associations with diagnosed asthma and asthma symptoms. PM10 was not associated with lung function across all studies combined.Our study adds to the evidence that long-term exposure to outdoor air pollution, characterized by the concentration of PM10, is associated with increased respiratory symptom

    Parental education and lung function of children in the PATY study

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    Studies of the relationships between low socio-economic status and impaired lung function were conducted mainly in Western European countries and North America. East–West differences remain unexplored. Associations between parental education and lung function were explored using data on 24,010 school-children from eight cross-sectional studies conducted in North America, Western and Eastern Europe. Parental education was defined as low and high using country-specific classifications. Country-specific estimates of effects of low parental education on volume and flow parameters were obtained using linear and logistic regression, controlling for early life and other individual risk factors. Meta-regressions were used for assessment of heterogeneity between country-specific estimates. The association between low parental education and lung function was not consistent across the countries, but showed a more pronounced inverse gradient in the Western countries. The most consistent decrease associated with low parental education was found for peak expiratory flow (PEF), ranging from −2.80 to −1.14%, with statistically significant associations in five out of eight countries. The mean odds ratio for low PEF (<75% of predicted) was 1.34 (95% CI 1.06–1.70) after all adjustments. Although social gradients were attenuated after adjusting for known risk factors, these risk factors could not completely explain the social gradient in lung function

    A noninterventional study to monitor patients with diabetic macular oedema starting treatment with ranibizumab (POLARIS)

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    Purpose: Antivascular endothelial growth factor agents are increasingly used in diabetic macular oedema (DME); however, there are few studies exploring their use in DME in real-world settings. Methods: POLARIS was a noninterventional, multicentre study to monitor 12-month outcomes in patients starting ranibizumab treatment in routine practices. The primary outcome was mean change in visual acuity (VA) from baseline to month 12 (last observation carried forward approach). Other outcomes included mean change in central retinal thickness (CRT) and resource utilization. Visual acuity (VA) outcomes were also stratified by country, baseline visual acuity score (VAS), sex, age and injection frequency. Results: Outcomes were analysed from all treated patients (n = 804) and from first-year completers (patients who had a visual acuity assessment at 12 months; n = 568). The mean (SD) baseline VAS was 59.4 (15.9) letters, and the mean change in visual acuity was 4.4 letters (95% confidence interval: 3.3–5.4) at month 12 (study eye; first-year completers). The mean number of injections (study eye) was 4.9, and the mean number of all visits (any eye) was 10 (58% were injection visits) over 12 months (first-year completers). The mean (SD) baseline CRT was 410.6 (128.8) μm, and the mean change in CRT was −115.2 μm at month 12 (study eye; first-year completers). Visual acuity (VA) outcomes were generally comparable across most countries and subgroups and were greatest in patients with the lowest baseline VAS (≤60 letters). Conclusion: POLARIS showed that real-world outcomes in DME patients starting treatment with ranibizumab were lower than those observed in clinical studies, in spite of extensive monitoring. © 2018 The Authors. Acta Ophthalmologica published by John Wiley &amp; Sons Ltd on behalf of Acta Ophthalmologica Scandinavica Foundation

    The antifibrillatory effects of vagus nerve stimulation on the ventricle is independent of muscarinic receptor activation

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