نتایج جستجو برای: hypertrophy cohort studies
تعداد نتایج: 1636669 فیلتر نتایج به سال:
Background. Attrition is a major cause of potential bias in longitudinal studies and clinical trials. Attrition rate above 20% raises concern of the reliability of the results. Few studies have looked at the factors behind attrition in follow-ups spanning decades. Methods. We analyzed attrition and associated factors of a 30-year follow-up cohort of subjects who were born with perinatal risks f...
Progress has recently been made in understanding the genetic basis of schizophrenia and other psychiatric disorders. Longitudinal studies are complicated by participant dropout, which could be related to the presence of psychiatric problems and associated genetic risk. We tested whether common genetic variants implicated in schizophrenia were associated with study nonparticipation among 7,867 c...
OBJECTIVE Non-compliance with food record submission can induce bias in nutritional epidemiological analysis and make it difficult to draw inference from study findings. We examined the impact of demographic, lifestyle and psychosocial factors on such non-compliance during the first 3 years of participation in a multidisciplinary prospective paediatric study. DESIGN The Environmental Determin...
BACKGROUND In 2012, we set out to recruit a cohort of at least 10,000 women aged 18-23 from across Australia. With recent research demonstrating the inadequacy of traditional approaches to recruiting women in this age group, we elected to conduct open recruiting. OBJECTIVE Our aim was to report on the overall success of open recruiting and to evaluate the relative success of a variety of recr...
OBJECTIVES To compare the effects of four different amounts of exercise for preventing depressive symptoms in community-dwelling older adults. DESIGN Prospective cohort study. SETTING A nationally representative sample in Taiwan. PARTICIPANTS Four waves of the survey 'Taiwan Longitudinal Study on Aging (TLSA)' from 1996 to 2007 were analysed. A total of 2673 older adults aged 65 years and...
BACKGROUND In Switzerland, assisted suicide is legal but there is concern that vulnerable or disadvantaged groups are more likely to die in this way than other people. We examined socio-economic factors associated with assisted suicide. METHODS We linked the suicides assisted by right-to-die associations during 2003-08 to a census-based longitudinal study of the Swiss population. We used Cox ...
BACKGROUND IUD is one of the safest and most widely used reversible methods of contraception. The purpose of this study was to determine IUD survival and reasons for early discontinuation in Bandar Abbas, south of Iran. METHODS Probability of IUD continuation rate and factors associated with discontinuation were assessed in a historical cohort study of 400 women records from March 2002 to Feb...
BACKGROUND Cleft lip and/or palate (CL/P) is one of the most common birth conditions in the world, but little is known about its causes. Professional opinion remains divided as to which treatments may be the most beneficial for patients with CL/P, and the factors that contribute to psychological adjustment are poorly understood. The use of different methodological approaches and tools plays a k...
Background and purpose: Cohort studies are one of the best types of observational studies in investigating the causal relationship, diseases etiology, and determining the incidence and natural history of diseases. In recent decades cohort studies played a major role in identification of environmental, cardiovascular and cancers risk factors. Considering the important role of cohort studies in p...
Pathophysiology Physical examination reveals adenotonsillar hypertrophy in most children with OSA. There is some evidence that adenotonsillectomy improves clinical symptoms.6-8 [Strengthof-recommendation (SOR) Evidence level B, clinical cohort studies] However, many children with documented adenotonsillar hypertrophy never have symptoms of OSA. This finding suggests that the etiology of OSA in ...
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