Joint regression analysis of marginal quantile and quantile association: application to longitudinal body mass index in adolescents

2017 ◽  
Vol 66 (5) ◽  
pp. 1075-1090
Author(s):  
Chi-Chuan Yang ◽  
Yi-Hau Chen ◽  
Hsing-Yi Chang
Keyword(s):  
Body Mass Index ◽  
Regression Analysis ◽  
Body Mass ◽  
Joint Regression Analysis

scholarly journals Body mass index and weight status misperception among a sample of college students in Yogyakarta, Indonesia

2017 ◽  
Vol 16 (2) ◽  
pp. 225-232
Author(s):  
Janatin Hastuti ◽  
Neni Trilusiana Rahmawati ◽  
Rusyad Adi Suriyanto
Keyword(s):  
College Students ◽  
Body Mass Index ◽  
Regression Analysis ◽  
Body Mass ◽  
Weight Control ◽  
Weight Status ◽  
Medical Science ◽  
Normal Weight ◽  
Ordinal Regression ◽  
Ordinal Regression Analysis

Background: Weight status perception associates with objective weight status and is important in the management of weight control. To date, perception of weight status among Indonesian youths has not been reported.Objectives: This study aimed to examine the association between body mass index and weight status perception in a sample of college students in Yogyakarta Province.Materials and Methods: A sample of 209 boys and 269 girls of college students in Yogyakarta Province were measured for their stature and body weight. Body mass index was calculated (BMI). Data of demographic, exercise, and diet were collected. Weight status perception was based on participant responses to a question regarding how they classified their own body size as underweight, normal, overweight, or obese. Ordinal regression analysis was performed to evaluate factors associated with weight status misperception among boys and girls.Results: Overall, 43.5% of boys and 37.5% of girls misclassified their own weight status by actual BMI. Of particular note, 75.9% of obese boys and 78.6% of obese girls underestimated their weight status as overweight or normal weight. Whereas, 9.1% and 23.4% of normal weight boys and girls respectively, overestimated their weight status. Ordinal regression analysis revealed that, weight status misperception from others was significantly contributed (p<0.01) to misperception of weight status among boys and girls with OR of 10.31 and 8.13 respectively. Diet practicing was significantly correlated with weight status misperception in boys (p<0.05) with an OR of 19.57.Conclusions: Weight status misperception was prevalent among normal weight and obese students. Obese students of both gender and normal weight boys tended to underestimate their weight status, whereas normal weight girls were likely to overestimate their weight status.Bangladesh Journal of Medical Science Vol.16(2) 2017 p.225-232

scholarly journals Left Atrial Deformation And Risk of Transient Ischemic Attack And Stroke In Paroxysmal Atrial Fibrillation

2021 ◽  
Author(s):  
Jian Chen ◽  
Ying Zhao ◽  
Changsheng Ma ◽  
Xin Du ◽  
Yihua He
Keyword(s):  
Atrial Fibrillation ◽  
Body Mass Index ◽  
Regression Analysis ◽  
Linear Regression ◽  
Body Mass ◽  
Left Atrial ◽  
Speckle Tracking ◽  
Linear Regression Analysis ◽  
Volume Index ◽  
Chamber View

Abstract Left atrial (LA) remodeling is closely related to cerebral stroke, but the relationship between impaired deformability of LA in early stages and stroke/TIA is not clear. The aim of this study was to evaluate the changes of LA deformability and its relationship with stroke/TIA events by using Speckle Tracking echocardiography. In 365 patients with paroxysmal atrial fibrillation (AF) (318, Non stroke/TIA; 47, stroke/TIA), comprehensive echocardiography was performed by using speckle tracking imaging to calculate mean LA longitudinal strain and strain rate values from apical four chamber view, apical two chamber view and apical three cavity view. The patients in stroke/TIA group had greater ages, a greater proportion of men and lower LA strain rate during left ventricular (LV) early diastole (SRE), and the difference was statistically significant(p<0.05). In the univariate linear regression analysis, the following clinical and conventional echocardiographic parameters each had a significant linear correlation with SRE(p<0.001), they were E/A ratio, LA volume index, body mass index, mean E/e′, LV ejection fraction, age, proportion of hypertension. Through a multiple linear regression analysis, the results show that there is a linear dependence between SRE and E/A ratio, LA volume index and Body mass index. The regression equation is y=-1.430-0.394X1+0.012X2+0.019X3(p<0.001) (y,SRE; X1,E/A ratio; X2,LA volume index; X3,Body mass index).In the multivariate logistic regression analyses, SRE and Sex ratio were independently risk factors stroke/TIA. (SRE, OR 2.945, 95% CI 1.092-7.943, p= 0.033; Sex, OR 0.462, 95% CI 0.230-0.930, p = 0.031)In patients with paroxysmal AF, SRE could reflect the impaired deformability of LA in early stages, and it was associated with the risk of stroke/TIA.

Aerobic Capacity, Obesity, and Atherosclerotic Risk Factors in Male Adolescents

PEDIATRICS ◽  
1985 ◽  
Vol 75 (5) ◽  
pp. 813-818
Author(s):  
Raymond R. Fripp ◽  
James L. Hodgson ◽  
Peter O. Kwiterovich ◽  
John C. Werner ◽  
H. Gregg Schuler ◽  
...  
Keyword(s):  
Risk Factors ◽  
Blood Pressure ◽  
Body Mass Index ◽  
Regression Analysis ◽  
Body Mass ◽  
Linear Regression Analysis ◽  
Density Lipoprotein ◽  
Plasma Triglyceride ◽  
Lipoprotein Cholesterol ◽  
Atherosclerotic Risk Factors

Correlations between aerobic capacity, obesity, and atherosclerotic risk factors were evaluated in adolescents with low-to-moderate levels of physical fitness. Subjects with higher levels of fitness had a more favorable risk profile with decreased body mass index, lower systolic and diastolic blood pressure and plasma triglyceride levels, and higher plasma high-density lipoprotein-cholesterol levels. Simple linear regression analysis revealed an association between body mass index and blood pressure, plasma triglyceride and plasma highdensity lipoprotein-cholesterol. The level of aerobic fitness as determined by exercise duration was also associated with the same atherosclerotic risk factors. However, multiple linear regression analysis demonstrated that body mass index provided the largest explanation, by those variables examined, of the interindividual variance in blood pressure, plasma triglyceride, and high-density lipoprotein-cholesterol. Aerobic fitness contributed only minimally to the variation in these risk factors. These findings suggest that if aerobic conditioning is used to modify atherosclerotic risk factors, it should be accompanied by a reduction in weight in adolescents with low-to-moderate levels of physical fitness.

scholarly journals The relevance of body mass index in forensic age assessment of living individuals: an age-adjusted linear regression analysis using multivariable fractional polynomials

2020 ◽  
Vol 134 (5) ◽  
pp. 1861-1868 ◽  
Author(s):  
Maximilian Timme ◽  
André Karch ◽  
Denys Shay ◽  
Christian Ottow ◽  
Andreas Schmeling
Keyword(s):  
Body Mass Index ◽  
Regression Analysis ◽  
Linear Regression ◽  
Body Mass ◽  
Linear Regression Analysis ◽  
Age Assessment ◽  
Fractional Polynomials

Serum myonectin is increased after laparoscopic sleeve gastrectomy

2020 ◽  
Vol 57 (5) ◽  
pp. 360-364
Author(s):  
Lei Li ◽  
Qianqian Wang ◽  
Chengkun Qin
Keyword(s):  
Body Mass Index ◽  
Regression Analysis ◽  
Sleeve Gastrectomy ◽  
Linear Regression ◽  
Laparoscopic Sleeve Gastrectomy ◽  
Body Mass ◽  
Linear Regression Analysis ◽  
Acid Uptake ◽  
Model Assessment ◽  
Obese Patients

Objective Myonectin, a newly discovered myokine, enhances fatty acid uptake in cultured adipocytes and hepatocytes and suppresses circulating levels of free fatty acids in mice. Recent studies showed that serum myonectin concentration is negatively correlated with obesity. This study was undertaken to evaluate the change of serum myonectin in obese patients after laparoscopic sleeve gastrectomy. Methods This study was performed in a population of 42 obese and 58 control subjects from April of 2018 to December of 2019. All obese subjects underwent laparoscopic sleeve gastrectomy. Anthropometric measurements, lipid profiles, HbA1c and serum myonectin were assessed at baseline and six months after laparoscopic sleeve gastrectomy. Results Serum myonectin concentrations were significantly lower in the obese patients than in the controls. Serum myonectin concentrations were increased at six months after laparoscopic sleeve gastrectomy. Simple linear regression analysis indicated that serum myonectin was negatively correlated with weight, waist circumference, hip circumference, body mass index, fasting plasma glucose, homeostasis model assessment of insulin resistance and HbA1c. Only body mass index was still inversely correlated with serum myonectin after multiple linear regression analysis. Conclusion Serum myonectin is correlated with obesity and increased after laparoscopic sleeve gastrectomy.

Influence of Obesity on Plasma Fructosamine Concentration

1992 ◽  
Vol 38 (11) ◽  
pp. 2190-2192 ◽  
Author(s):  
J Woo ◽  
C Cockram ◽  
E Lau ◽  
A Chan ◽  
R Swaminathan
Keyword(s):  
Body Mass Index ◽  
Regression Analysis ◽  
Glycemic Control ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Body Mass ◽  
Total Protein ◽  
Stepwise Multiple Regression ◽  
Stepwise Multiple Regression Analysis ◽  
Chinese Community

Abstract The influence of obesity on plasma fructosamine concentration was studied in 68 diabetic and 1335 nondiabetic subjects from a Chinese community. Obese nondiabetic men (body mass index &gt; 25 kg/m2) had lower fructosamine concentrations than nonobese nondiabetic men (body mass index &lt; or = 25 kg/m2); the pattern was similar for diabetic women. Stepwise multiple-regression analysis showed that, apart from known factors (total protein, albumin, and indices of glycemic control), fructosamine was also associated with body mass index and plasma fasting triglycerides. However, the contribution of these were small except in diabetic women. We conclude that the effect of obesity on fructosamine is small.

scholarly journals Decomposing body mass index gaps between Mediterranean countries: A counterfactual quantile regression analysis

2009 ◽  
Vol 7 (3) ◽  
pp. 351-365 ◽  
Author(s):  
Joan Costa-Font ◽  
Daniele Fabbri ◽  
Joan Gil
Keyword(s):  
Body Mass Index ◽  
Regression Analysis ◽  
Quantile Regression ◽  
Body Mass ◽  
Mediterranean Countries ◽  
Quantile Regression Analysis
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