Biology subjects

Kuehni, C. E.

Publications and source records attributed to Kuehni, C. E..

3 recordsLinked to original sources

bioRxiv2019

Physical activity and screen time in children who survived cancer - A report from the Swiss Childhood Cancer Survivor Study

BackgroundPhysical activity (PA) can reduce the risk of chronic adverse health conditions in childhood cancer survivors. We examined physical activity and sedentary screen time behavior in a nationwide study in Switzerland.\n\nProceduresThe Swiss Childhood Cancer Survivor Study sent questionnaires to parents of all Swiss resident [≥]5 year-survivors diagnosed 1995-2010. We assessed physical activity including compulsory school sport, recreational sport, commuting to school, and time spent with screen media in those aged 5-15 years, and compared results to international recommendations.\n\nResultsWe included 766 survivors with a median age at diagnosis of 2.8 (interquartile range 1.4-5.0) years and a median age at study of 12.5 (10.0-14.3) years. Median PA time was 7.3 (4.8-10.0) hours/week and median screen time 1.4 (0.8-2.0) hours/day. Compulsory school sport hours and walking or cycling to school contributed significantly to total PA. 55% of survivors met PA and 68% screen time recommendations. PA was lower for children living in regions of Switzerland speaking French or Italian compared to German, and for those who had a relapse or musculoskeletal/neurological conditions. Screen time was higher in males, and children with lower parental education and a migration background.\n\nConclusionsPA and sedentary screen watching were associated with social factors and PA also with clinical risk factors. Structural preventions that afford active commuting to school and sufficient school sport are essential, as is counselling vulnerable survivor groups such as those with musculoskeletal and neurological problems, and those who have had a relapse.

epidemiology↗

bioRxiv2019

Temporal trends in incidence of childhood cancer in Switzerland, 1985-2014

STRUCTURED ABSTRACTO_ST_ABSBackgroundC_ST_ABSIncidence of childhood cancer increased in most countries worldwide, but the reasons are unclear. This study investigates trends in childhood cancer incidence in Switzerland from 1985 to 2014.\n\nMethodsWe extracted data on all childhood cancer cases diagnosed at ages 0-14 years in Switzerland from the Swiss Childhood Cancer Registry. We included ICCC-3 main groups I-XII and calculated age-standardised, cumulative, and age-specific incidence for different diagnostic groups. We analysed trends in annual age-standardised incidence using JoinPoint regression models.\n\nResultsOver the study period from 1985-2014, 5104 of 5486 cancer diagnoses (93%) were microscopically verified. The proportion of children treated in paediatric cancer centres increased from 84% during 1985-1994 to 93% in 1995-2004 and 98% in 2005-2014 (p<0.001). Using the 2010 European standard population, age-standardised incidence was 143 in 1985-1994, 154 in 1995-2004, and 162 per million in 2005-2014. Over the period 1985-2014, incidence for all cancers increased by 0.7% (95% confidence interval [CI] 0.5-1.0) per year, 0.8% (95% CI 0.2%-1.4%) for leukaemias, 3.8% (95% CI 1.7%-6.0%) for epithelial neoplasms and melanomas, and 3.0% (95% CI 1.3%-4.6%) for CNS tumours for the period 1985-2002.\n\nConclusionTrends in incidence were driven mostly by increases among leukaemias and CNS tumours. For CNS tumours, observed trends may be explained at least partially by diagnostic changes and improved registration. For leukaemias, rising incidence may be real and at least partly due to changes in risk factors.\n\nHighlightsO_LIIn Switzerland, incidence of childhood cancer increased by 18% from 1985-2014.\nC_LIO_LIIncrease in incidence was mainly caused by brain tumours and leukaemias.\nC_LIO_LIImproved registration and diagnostics may have increased brain tumour incidence.\nC_LIO_LIIncreasing trend for leukaemias may be real, but reasons remain elusive.\nC_LI

epidemiology↗

bioRxiv2019

Do clinical investigations predict long-term outcome? A follow-up of paediatric respiratory outpatients

IntroductionThe contribution of clinical investigations to prediction of long-term outcomes of children investigated for asthma is unclear. AimWe performed a broad range of clinical tests and investigated whether they helped to predict long-term wheeze among children referred for evaluation of possible asthma. MethodsWe studied children aged 6-16 years referred to two Swiss pulmonary outpatient clinics with a history of wheeze, dyspnoea, or cough in 2007. The initial assessment included spirometry, body plethysmography, fractional exhaled nitric oxide, skin prick tests, and bronchial provocation tests (BPT) by exercise, methacholine, and mannitol. Respiratory symptoms were assessed with questionnaires at baseline and at follow-up seven years later. Associations between baseline factors and wheeze at follow-up were investigated by logistic regression. ResultsAt baseline, 111 children were examined in 2007. Seven years after baseline, 85 (77%) completed the follow-up questionnaire, among whom 61 (72%) had wheeze at baseline, while at follow-up 39 (46%) reported wheeze. Adjusting for age and sex, the following characteristics predicted wheeze at adolescence: wheeze triggered by pets (odds ratio 4.2, 95% CI 1.2-14.8), pollen (2.8, 1.1-7.0), and exercise (3.1, 1.2-8.0). Of the clinical tests, only a positive exercise test (3.2, 1.1-9.7) predicted wheeze at adolescence. ConclusionReported exercise-induced wheeze and wheeze triggered by pets or pollen were important predictors of wheeze persistence into adolescence. None of the clinical tests predicted wheeze more strongly than reported symptoms. Clinical tests might be important for asthma diagnosis but medical history is more helpful in predicting prognosis in children referred for asthma.

epidemiology↗