Search results for "Regression analysis"
showing 10 items of 807 documents
The association among interpersonal problems, binge behaviors, and self-esteem, in the assessment of obese individuals
2011
Abstract Objectives Although disordered eating has been assumed to be associated with interpersonal problems, there is a lack of research regarding the relationship between interpersonal problems and obesity. This study explored associations among self-esteem, binge behaviors, and interpersonal problems in obese individuals, by contrasting obese persons with overweight persons, and to investigate whether body mass index (BMI), binge behaviors, and self-esteem predict interpersonal problems in obese individuals. Methods A group of nonobese overweight people (n = 65; BMI range, 25-29.9 kg/m 2 ) and a group of obese people (n = 78; BMI >35 kg/m 2 ) were selected from 224 people attending a men…
Early phonological skills as a predictor of reading acquisition: a follow-up study from kindergarten to the middle of grade 2.
2003
The purpose of this study was to investigate the power of early measures of phonological skills (phonemic awareness, rapid naming, short-term memory) in predicting later reading skills at various points of time. About 70 children were followed from the end of kindergarten to the middle of grade 2. Correlation analyses were performed as well as a linear growth curve analyses. In the traditional regression analysis, phonemic awareness in kindergarten explained about 27% of the variance in word reading six months later and about 9.5% of the variance at the end of grade 1. Even when prior level of reading skill was included in the predictive equation, a significant amount of variance was still …
Blood pressure and obesity exert independent influences on pulse wave velocity in youth.
2012
The objective was to analyze pulse wave velocity (PWV) in normotensive, high-normal, and hypertensive youths by using aortic-derived parameters from peripheral recordings. The impact of obesity on vascular phenotypes was also analyzed. A total of 501 whites from 8 to 18 years of age were included. The subjects were divided according to BP criteria: 424 (85%) were normotensive, 56 (11%) high-normal, and 21 (4%) hypertensive. Obesity was present in 284 (56%) and overweight in 138 (28%). Pulse wave analysis using a SphygmoCor device was performed to determine central blood pressure (BP), augmentation index, and measurement of PWV. Among the BP groups, differences appeared in age, sex, and hei…
Factors related to quality of ambulatory blood pressure monitoring in a pediatric population.
1999
To assess the factors related to the quality of ambulatory blood pressure monitoring in a pediatric population, we performed 24-h ambulatory blood pressure monitorings on 333 unselected children aged 3 to 18 years using a Spacelabs 90207 monitor. For each individual, the percentages of valid measurements (ratio between valid and total number of measurements, 76.4% +/-15.6%) and of successful measurements (percentage of valid preset measurements, 89.8% +/- 11.5%) were calculated. Two hundred eighty-one (84.1%) monitorings had a successful measurement rate of >80%. Two hundred thirteen (64%) were of excellent quality, as defined by the percentage of successful measurements being higher than o…
A framework for identifying the adaptations responsible for differences in pegboard times between middle-aged and older adults
2017
Time to complete two tests of manual dexterity, the 9-hole Peg Test and Grooved Pegboard Test, increases with advancing age. However, the adaptations responsible for the differences in pegboard times betweenmiddle-aged and older adults are largely unknown. Potential mechanisms include neuromuscular characteristics, cognitive function, and cutaneous sensation. To provide a tractable framework to address these gaps in knowledge, the purpose of the current study was to identify the latent variables underlying age-associated differences in time to complete the 9-hole and grooved pegboard tests. The approach involved an independent component analysis that identified associations between the two …
Bone density of the calcaneus and fractures in 75- and 80-year-old men and women
1994
Bone mineral density of the calcaneus in relation to fractures was studied both retrospectively and prospectively among the 75- and 80-year-old men and women resident in the city of Jyväskylä, Finland, in 1989 and 1990, respectively. The bone measurements were performed at the calcaneus by 125I-photon absorption. Retrospective fracture (RF) history after age 50 was collected by questionnaire and interview, and reported fractures were checked from medical records. In the retrospective study, in the 75-year-olds a fracture was found in 22% (n = 22) of men and in 45% (n = 84) of women. The corresponding figures for the 80-year-olds were 16% (n = 9) and 35% (n = 48). Over half of the fractures …
Estimation of Values below the Limit of Detection of a Contemporary Sensitive Troponin I Assay Improves Diagnosis of Acute Myocardial Infarction
2015
Abstract BACKGROUND The limit of detection (LoD) is the minimal amount of a substance that can be consistently detected. In the diagnosis of acute myocardial infarction (AMI) many patients present with troponin concentrations below the LoD of contemporary sensitive cardiac troponin I (cs-cTnI) assays. These censored values below the LoD influence the diagnostic performance of these assays compared to highly sensitive cTnI (hs-cTnI) assays. Therefore we assessed the impact of a new approach for interpolation of the left-censored data of a cs-cTnI assay in the evaluation of patients with suspected AMI. METHODS Our posthoc analysis used a real world cohort of 1818 patients with suspected MI. D…
New iPAD-based test for the detection of color vision deficiencies.
2018
Purpose: To develop and validate a new iPad-based color vision test (Optopad). Methods: A total of 341 student eyes were enrolled in a first comparative study between Optopad and the Isihara tests. In a second comparative study, Optopad vs. the Farnworth-Munsell test (FM 100H), a total of 66 adult eyes were included. Besides the agreement between tests, the correlation between FM 100H and Optopad outcomes were investigated. Multiple regression analysis was used to predict the total error score (TES) from contrast thresholds measured with the Optopad test. Results: The Ishihara and Optopad tests detected the same anomalous patients. Concerning FM 100H vs. Optopad, 10 subjects were diagnosed …
Cytomegalovirus infection with interleukin-6 response predicts cardiac mortality in patients with coronary artery disease.
2001
Background —Prospective data relating previous exposure to cytomegalovirus (CMV) to the risk of cardiac mortality are controversial. We investigated the effect of previous exposure to CMV infection on the risk of future cardiac disease–related death in relation to an underlying inflammatory response. Methods and Results —Coronary angiography was performed in 1134 subjects, and 989 patients with documented coronary artery disease were studied prospectively. CMV-IgG titers and interleukin (IL)-6 levels were measured before angiography. Increasing titers of CMV correlated with the elevation of IL-6 levels ( P <0.001) after adjustment for possible confounders. All patients were followed up …
Effectiveness and tolerability of amidotrizoate for the treatment of constipation resistant to laxatives in advanced cancer patients.
2011
Abstract Context Constipation is a common problem for advanced cancer patients, and is generally inadequately treated. Objectives The aim of this study was to prospectively evaluate the effectiveness and tolerability of amidotrizoate (AM) in patients unresponsive to current laxatives. Methods A consecutive sample of advanced cancer patients was surveyed. Inclusion criteria were no bowel movements for three days despite receiving regular doses of senna or lactulose. AM 50mL was administered orally; the dose could be repeated the day after, based on clinical judgment and/or patients' preference. Age, sex, primary tumor, previous abdominal surgery, chemotherapy and radiotherapy performed in th…