Leicester Diabetes Centre, University of Leicester, Leicester General Hospital, Leicester, UK
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Centre for Physical Activity in Health and Disease, Brunel University London, Uxbridge, UK
Division of Sport, Health and Exercise Sciences, Department of Life Sciences, Brunel University London, Uxbridge, UK
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any allergies to the food and drink being provided in the study. Sample size Sample size estimations were based on previous data ( 18 ). Based on a 10% within-group error variance, a within-person correlation of 0.6, 80% power, and α = 0.05, it
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Institute of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
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Department of Internal Medicine, Herlev Gentofte Hospital, Copenhagen, Denmark
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Department of Palliative Medicine, Bispebjerg Hospital, Copenhagen, Denmark
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National Research Centre for the Working Environment, Copenhagen, Denmark
QualityMetric Incorporated, LLC, Johnston, Rhode Island, USA
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values may be used in classical power and sample size calculation for future clinical trials, comparing mean levels of groups. In some instances (e.g. important outcomes for non-toxic goiter interventions), smaller differences may be argued for ( 35
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. Free androgen index was calculated as (testosterone/SHBG) ×100. Statistics The power analysis was based on data from Graham and colleagues who used a five-point scale for assessment of sexual desire ( 7 ). Assuming that the SD was twice the size
Department of Clinical Research, University of Basel Hospital, Basel, Switzerland
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Department of Clinical Research, University of Basel Hospital, Basel, Switzerland
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Division of Endocrinology, Diabetes and Metabolism, University Department of Medicine, Kantonsspital Aarau, Aarau, Switzerland
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Division of Endocrinology, Diabetes and Metabolism, University Department of Medicine, Kantonsspital Aarau, Aarau, Switzerland
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Department of Clinical Research, University of Basel Hospital, Basel, Switzerland
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Department of Clinical Research, University of Basel Hospital, Basel, Switzerland
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and metabolic syndrome. However, the current trial was not designed and not powered to investigate the effects on glucose metabolism, since most of the included patients did not have impaired glucose tolerance (only 16 (24%) patients were diabetic
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Department of Microbiology, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
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more subtle than FVPTC and mainly localized to the periphery of the neoplasm), no psammoma bodies, no necrosis, and no more than three mitoses per 10 high-power fields (400×) are the most recent criteria used for this diagnostic category ( 14 ). Based
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Department of Internal Medicine, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
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Cardiovascular Research Laboratory, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, Brazil
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and no previous study has investigated the association of the rs767649 polymorphism with this complication, sample size and study power were not determined a priori . In relation to the plasma levels of miR-155, we used the results obtained in a
Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Department of Internal Medicine, Endocrine Unit, Herlev Gentofte Hospital, Herlev, Denmark
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Department of Internal Medicine, Endocrine Unit, Herlev Gentofte Hospital, Herlev, Denmark
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Department of Internal Medicine, Endocrine Unit, Herlev Gentofte Hospital, Herlev, Denmark
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Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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at Rigshospitalet, Copenhagen, Denmark. Statistics A sample size calculation based on an estimated standard deviation of 130 units obtained from in-house data, declared 63 subjects, randomized 2:1, needed for 80% power to find a difference in
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with an un-paired t -test). Data from a previous study were used to estimate sample size, and PS Power and Sample Size, version 3.0.0.43. was used to calculate the sample size for the primary outcomes ( 21 , 22 ). Statistical analysis was performed
Wolfson Diabetes and Endocrine Centre, Addenbrooke’s Hospital, Cambridge, UK
IMED Biotech Unit, Clinical Discovery Unit, AstraZeneca, UK
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Wolfson Diabetes and Endocrine Centre, Addenbrooke’s Hospital, Cambridge, UK
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Department of Nuclear Medicine, Addenbrooke’s Hospital, Cambridge, UK
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Wolfson Diabetes and Endocrine Centre, Addenbrooke’s Hospital, Cambridge, UK
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Department of Nuclear Medicine, Addenbrooke’s Hospital, Cambridge, UK
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powered, controlled clinical trials. Thus, reporting outcomes from patient series remains a vital conduit for disseminating evidence that additional therapies may be used safely and effectively to manage refractory hypoglycaemia in this rare and clinically
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North Lakes Clinical, Department of Nuclear Medicine, Medical Department I, Ruhr Center for Rare Diseases (CeSER), 20 Wheatley Avenue, Ilkley LS29 8PT, UK
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considerable inter-individual variation, these measures apparently lack statistical power in a trial setting and have not been clearly linked to prognosis. For example, even a change in thyroid function as profound as the transition from the hypothyroid to the