Search results for " CLUSTER"
showing 10 items of 2162 documents
Effects of a workplace physical exercise intervention on the intensity of low back symptoms in office workers: A cluster randomized controlled cross-…
2006
Objectives. The purpose of the study was to examine the effects of a workplace physical exercise intervention on the intensity of low back symptoms. Methods. The study was a cluster randomized controlled trial with department (n = 4) as the unit of randomization. The subjects were office workers [(n = 36), mean age 47.1 (SD 8.4) years] who self-reported low back symptoms, which restricted their daily activities during the last 12 months. Low back symptoms were measured using the Borg CR10 scale. The cross-over design consisted of one intervention period of light resistance training and guidance and no training and no guidance of 15 weeks duration. Statistical analyses were based on linear m…
Neuromuscular Training Warm-up Prevents Acute Noncontact Lower Extremity Injuries in Children’s Soccer : A Cluster Randomized Controlled Trial
2021
Background: Prevention of sports injuries is essential in youth, as injuries are associated with less future physical activity and thus greater all-cause morbidity. Purpose: To investigate whether a neuromuscular training warm-up operated by team coaches is effective in preventing acute lower extremity (LE) injuries in competitive U11-U14 soccer players. Study Design: Randomized controlled trial; Level of evidence, 1. Methods: Twenty top-level U11 to U14 soccer clubs in Finland were randomized into intervention and control groups and assessed for 20 weeks. Participants included 1403 players (280 female, 1123 male; age range, 9-14 years): 673 players (44 teams) in the intervention group and …
Integrative transnational analysis to dissect tuberculosis transmission events along the migratory route from Africa to Europe
2021
páginas, 4 figuras, 3 tablas
302 Hearing Abnormalities in Children with Fabry Disease: Data from FOS - the Fabry Outcome Survey
2005
Background: Fabry disease is an X-linked glycosphingolipid storage disorder due to a deficiency of the enzyme alpha-galactosidase A. Accumulation of substrate results in a progressive and life-threatening multisystemic disease. Early clinical manifestations include pain and gastrointestinal symptoms. Sensorineural hearing loss and vertigo are well-recognized features of the disorder, occurring in approximately 50% of adults with Fabry disease. We have investigated the audiological symptoms of Fabry disease in children using pure-tone and impedance audiometry. Methods: Symptom history was obtained using a standardized questionnaire from FOS − the Fabry Outcome Survey. Hearing was measured us…
Treatment of patients with essential hypertension and microalbuminuria.
1998
There has been increasing interest in the question of whether microalbuminuria can be used in the risk stratification of patients with essential hypertension. A cluster of cardiovascular and/or renal risk factors may be associated with microalbuminuria in hypertension. Despite this, prospective data about the potential role of microalbuminuria as a prognostic marker of cardiovascular and/or renal risk have been sparse and inconclusive until now. Blood pressure values have been considered the most important determinant of microalbuminuria in essential hypertension; however, hyperinsulinaemia--a metabolic component-was noted to be present in conjunction with high blood pressure. Furthermore, …
The Relationship Between Demographic Variables and Substance Use in Undergraduates
2018
The aim of this study was to explore the relationships between demographic variables and substance use during the last month among undergraduates. A self-administered questionnaire “Students 2004” was distributed among a convenience sample of undergraduates (n = 983; between the ages of 21 and 36) at a large, public university in the south of Poland. The data were analyzed statistically, using chi-squared test, logistic regression, and cluster analysis. The results indicated that excessive alcohol drinking and substance use among students are related to being male, studying social sciences, living in a dorm or apartment, and living in an urban area. Binge drinking is related to gender and l…
Using Two-Step Cluster Analysis and Latent Class Cluster Analysis to Classify the Cognitive Heterogeneity of Cross-Diagnostic Psychiatric Inpatients
2020
The heterogeneity of cognitive profiles among psychiatric patients has been reported to carry significant clinical information. However, how to best characterize such cognitive heterogeneity is still a matter of debate. Despite being well suited for clinical data, cluster analysis techniques, like the Two-Step and the Latent Class, received little to no attention in the literature. The present study aimed to test the validity of the cluster solutions obtained with Two-Step and Latent Class cluster analysis on the cognitive profile of a cross-diagnostic sample of 387 psychiatric inpatients. Two-Step and Latent Class cluster analysis produced similar and reliable solutions. The overall result…
Mild cognitive impairment: classification method and procedure
2012
Title: Mild cognitive impairment: classification method and procedure. Abstract: Mild cognitive impairment (MCI) is one of the most important clinical entities in the field of cognitive neuroscience, the size of their numbers and the possible evolution of some of the subtypes of dementia. The aim of this study is to test a method and procedure for classification of MCI in terms of neuropsychological test scores and its convergence with established clinical criteria, and analyze the differences between the resulting groups. After applying the inclusion-exclusion criteria, was as- sessed using a battery of neuropsychological tests to 39 people aged be- tween 60 and 89 years. Diagnostic groups…
One-Year Evolution of Symptoms and Health Status of the COPD Multi-Dimensional Phenotypes: Results from the Follow-Up of the STORICO Observational St…
2021
Raffaele Antonelli Incalzi,1 Francesco Blasi,2,3 Nicola Scichilone,4 Alessandro Zullo,5 Lucia Simoni,5 Giorgio Walter Canonica6 On Behalf of STORICO study group1Internal Medicine and Geriatrics Department Biomedical Campus University of Rome, Rome, Italy; 2Internal Medicine Department, Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy; 3Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy; 4DIBIMIS, University of Palermo, Palermo, Italy; 5Medineos Observational Research, Modena, Italy; 6Personalized Medicine Asthma & Allergy Clinic, Humanitas University, Humanitas &…
Principal component analysis and cluster analysis for measuring the local organisation of human atrial fibrillation
2001
The distribution of atrial electrogram types has been proposed to characterise human atrial fibrillation. The aim of this study was to provide computer procedures for evaluating the local organisation of intracardiac recordings during AF as an alternative to off-line manual classification. Principal components analysis (PCA) reduced the data set to a few representative activations, and cluster analysis (CA) measured the average dissimilarity between consecutive activations of an intracardiac signal. The data set consisted of 106 bipolar signals recorded on 11 patients during electrophysiological studies for catheter ablation. Performances of PCA and CA in distinguishing between organised (t…