multivariable regression model
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2022 ◽  
Vol 8 ◽  
Author(s):  
Carolina Averta ◽  
Elettra Mancuso ◽  
Rosangela Spiga ◽  
Sofia Miceli ◽  
Elena Succurro ◽  
...  

Background: The association of circulating asymmetric dimethylarginine (ADMA) levels with cardiovascular risk and arterial stiffness has been reportedly demonstrated, although the causal involvement of ADMA in the pathogenesis of these conditions is still debated. Dimethylaminohydrolase 2 (DDAH2) is the enzyme responsible for ADMA hydrolysis in the vasculature, and carriers of the polymorphism rs9267551 C in the 5′-UTR of DDAH2 have been reported to have higher DDAH2 expression and reduced levels of serum ADMA.Approach and Results: We genotyped rs9267551 in 633 adults of European ancestry and measured their carotid–femoral pulse wave velocity (cfPWV), the gold-standard method to estimate arterial stiffness. cfPWV resulted significantly lower in rs9267551 C allele carriers (Δ = −1.12 m/s, P < 0.01) after correction for age, sex and BMI, and a univariate regression showed that the presence of rs9267551 C variant was negatively associated with cfPWV (β = −0.110, P < 0.01). In a multivariable regression model, subjects carrying the rs9267551 C allele manifested significantly lower cfPWV than GG carriers (β = −0.098, P = 0.01) independently from several potential confounders. We measured circulating ADMA levels in a subset of 344 subjects. A mediation analysis revealed that the effect of DDAH2 rs9267551 genotype on cfPWV was mediated by the variation in ADMA levels.Conclusions: These evidences hint that the presence of rs9267551 C allele may explain, at least in part, a reduction in vessel rigidity as measured by cfPWV, and support the attribution of a causative role to ADMA in the pathogenesis of arterial stiffness.


2021 ◽  
Vol 11 (1) ◽  
pp. 155
Author(s):  
Atsushi Takayama ◽  
Hemant Poudyal

Background: Since the association between disparity in physician distribution and specific healthcare outcomes is poorly documented, we aimed to clarify the association between physician maldistribution and cerebrovascular disease (CeVD), a high-priority health outcome in Japan. Methods: In this cross-sectional study, we conducted multivariable regression analysis with the Physician Uneven Distribution Index (PUDI), a recently developed and adopted policy index in Japan that uniquely incorporates the gap between medical supply and demand, as the independent variable and CeVD death rate as the dependent variable. Population density, mean annual income, and prevalence of hypertension were used as covariates. Results: The coefficient of the PUDI for the CeVD death rate was −0.34 (95%CI: −0.49–−0.19) before adjusting for covariates and was −0.19 (95%CI: −0.30–−0.07) after adjusting. The adjusted R squared of the analysis for the PUDI was 0.71 in the final model. However, the same multivariable regression model showed that the number of physicians per 100,000 people (NPPP) was not associated with the CeVD death rates before or after adjusting for the covariates. Conclusion: Incorporating the gap between the medical supply and demand in physician maldistribution indices could improve the responsiveness of the index for assessing the disparity in healthcare outcomes.


2021 ◽  
Vol 33 (4) ◽  
pp. 276-280
Author(s):  
Cihan Aydin ◽  
Birsen Pınar Yıldız ◽  
Didem Görgün Hattatoğlu

BackgroundAccording to the World Health Organisation reports (WHO), COPD is the third leading cause of overall in the World by 2020. AimWe aimed to determine the prognostic predictors of 90-day mortality after an initial exacerbation in patients with acute exacerbation of COPD (AECOPD). Results Increased Charlson Comorbidity Score(CCS) (HR:1.47; p<0.05), readmission after initial exacerbation (HR:1.47; p<0.05) were predictive risk factors for 30-day mortality in multivariable regression model. The 90-day mortality rate was %11.8. Hypertension, increased median age, nutrition risk score (NRS), CCS, CAT score, and mMRC 4th level were possible risk factors for 90-day mortality. There was a significant difference in the mortality of patients with D-dimer/Fibrinogen ratios>0.11 and ≤0.11 (HR:2.47; p<0.05). Recurrent exacerbations after discharge were predictive risk factors for 90-day mortality in the multivariable regression model (HR:2.25; p<0.001) with the increased mortality risk 4.73 times (HR:4.73; p=0.002). Furthermore, a 1-unit increment of acute exacerbation increased the mortality risk 3.39 times (HR:3.39; p<0.001). ConclusionOur study showed that D-dimer/Fibrinogen ratio but not D-dimer and recurrent exacerbations after discharge might have a critical impact on 90-day mortality


2021 ◽  
Author(s):  
Arnold Käffer ◽  
Jörg Mahlich

Abstract The aim of this paper is to investigate the influence of culture on COVID-19 related mortality relying on Hofstede’s six dimensional concept of culture. Retrieving data from 53 countries a multivariable regression model was fitted that controls for health related, economic and policy related variables that have been found to be associated with mortality. In particular we included the percentage of population above 65 years of age, the prevalence of relevant co-morbidities (i.e. diabetes, hypertension, cancer. obesity), and tobacco usage as health related variables. Economic variables were GDP per capita and the connectedness of a country as measured by the number of international arrivals. As policy variables we included the Oxford stringency index as well as stringency speed, and the Global Health Security index. The results suggests that individualistic societies can navigate well through the pandemic when they are also characterized by low power distance which reflects a low acceptance of inequality within a society. This finding contradicts with previous studies that supported the popular narrative that autocratic societies with an obedient population are better positioned to manage the pandemic.


Endoscopy ◽  
2021 ◽  
Author(s):  
Wladyslaw Januszewicz ◽  
Klaudiusz Witczak ◽  
Paulina Wieszczy ◽  
Magda Socha ◽  
Maryla Helena Turkot ◽  
...  

Background and aims A significant proportion of upper gastrointestinal cancers (UGICs) remain undetected during esophagogastroduodenoscopy (EGD). We investigated the characteristics and risk factors of UGICs missed during endoscopy. Methods In this nationwide registry-based study, we analyzed two large Polish datasets: the National Health Fund and the National Cancer Registry, to identify individuals who underwent EGD and were subsequently diagnosed with UGICs. Cancers diagnosed <6 months after EGD were defined as “prevalent” and those within ≥6 and <36 months as “missed.” We compared the characteristics of missed and prevalent cancers and analyzed the risk factors for missed UGICs in a multivariable regression model. Results We included 4,105,399 patients (mean age 56.0 [±17.4] years; 57.5% female) who underwent 5,877,674 EGDs between 2012-2018. Within this cohort, 33,241 UGICs were diagnosed, of which 1,993 (6.0%) were missed. Within esophageal neoplasms, adenocarcinomas were more commonly missed than squamous-cell cancers (6.1% vs. 4.2%) with a relative risk of 1.4 (95% confidence interval [CI]:1.2–1.5, P=0.011). In the stomach, missed adenocarcinomas constituted 5.7%. Overall, missed UGICs presented more often at an advanced stage than prevalent cancers (42.2% vs. 36.2%, P<.001). Risk factors for missed UGICs included: initial EGD performed within primary (vs. secondary) care (odds ratio[OR] 1.3, 95%CI:1.2–1.5), female gender (OR 1.3; 95%CI:1.2–1.4), and higher comorbidity (Charlson comorbidity index ≥5 vs. 0; OR 6.0; 95%CI:4.7–7.5). Conclusions Esophageal adenocarcinomas are most commonly missed among UGICs. Overlooked cancers occur more frequently within the primary care sector and are found more often in women and individuals with multiple comorbidities.


Author(s):  
Nancy Coutris ◽  
Justin Peter Gawaziuk ◽  
Saul Magnusson ◽  
Sarvesh Logsetty

Abstract The hypermetabolic response from burn injury is the highest of the critically ill patient population. When coupled with the hypermetabolic response, preexisting malnutrition may increase the hospital resources used. The goal of this study was to evaluate the rate of malnutrition in burn patients and the associated hospital resource utilization.We collected prospective data on burn patients ≥ 18 years with a burn ≥ 10% TBSA admitted to a regional burn center. Demographics, %TBSA, co-morbidities, length of stay (LOS) and standardized LOS (LOS/%TBSA) were evaluated on 49 patients. A multivariable regression model was constructed. Nutrition assessment was completed within 24-48 hours of admission including an SGA (Subjective Global Assessment) classification. SGA A (well-nourished) was compared to SGA B and C (malnourished). Fourteen patients (28.6%) in this study were malnourished. Malnourished patients were not statistically different with respect to median age (50 versus 39; p = 0.08] and BMI (22.9 versus 26.5; p = 0.08) compared to the well-nourished group. However, malnourished patients had significantly longer median LOS (21.0 versus 11.0 days, p = 0.01) and LOS/%TBSA (1.69 versus 0.83, p = 0.001) than the well-nourished group. Being malnourished was a significant independent predictor of above median LOS/%TBSA (p=0.027) with an odds ratio (OR) of 5.61 (95% C.I. 1.215-25.890).The rate of malnutrition is important given the high metabolic demands of these patients. Malnutrition increased the resource requirements via higher standardized LOS. This underscores the importance of completing SGA on admission to identify malnutrition early on to optimize nutrition intervention during the patients’ hospital stay.


2021 ◽  
Vol 63 (1) ◽  
Author(s):  
Almut Immekeppel ◽  
Stefan Rupp ◽  
Stanislas Demierre ◽  
Kai Rentmeister ◽  
Andrea Meyer-Lindenberg ◽  
...  

Abstract Background Intervertebral disc extrusions in the thoracolumbar region are a common spinal neurologic disorder in dogs and usually considered a neurological emergency. Several factors, like timing of surgery, have previously been analysed in order to determine the effect on outcome and time of recovery. Most studies have investigated one defined population of dogs and the influence of a single factor on the overall outcome. In this retrospective study, a large cohort of dogs and the influence of one or combinations of several factors on outcome and time of recovery were analysed. Results The bivariate analysis demonstrated a significant association between the following variables and the time of recovery: the time span between the onset of clinical signs and surgery (Cramers Phi $$\varphi^{\prime}$$ φ ′  = 0.14; P = 0.003), the grade of severity ($$\varphi^{\prime}$$ φ ′  = 0.23; P < 0.001) and the implementation of physical rehabilitation ($$\varphi^{\prime}$$ φ ′  = 0.2; P < 0.001). However, the analysis of a multivariable regression model demonstrated that a significant correlation only exists between the time span between the onset of clinical signs and surgery and the overall outcome (P = 0.007), as well as between the grade of severity and the time of recovery (P < 0.001). The percentage of dogs with lacking deep pain perception (DPP) that had to be euthanised due to their neurological condition, decreased from 20.0 to 2.9% when physical rehabilitation was implemented. Additionally, the proportion of dogs (same group) that improved to reach an ambulatory status increased from 80.0 to 91.4%. Conclusion The results of the bivariate analysis demonstrated several correlations between some variables and overall outcome or time of recovery, whereas the multivariable regression model demonstrated only two associations. The time span between the onset of clinical signs and surgery was significantly associated with the overall outcome. We therefore suggest that a surgical intervention should be performed without unreasonable delay. Due to the correlation between the grade of severity and time of recovery, owners of dogs with more severe neurological deficits prior to surgery should be informed about the presumably prolonged time of recovery.


2021 ◽  
Vol 15 (7) ◽  
pp. e0009584
Author(s):  
Zehra Jamil ◽  
Najeeha Talat Iqbal ◽  
Romana Idress ◽  
Zubair Ahmed ◽  
Kamran Sadiq ◽  
...  

Environmental enteric dysfunction (EED) is a subclinical condition of intestinal inflammation, barrier dysfunction and malabsorption associated with growth faltering in children living in poverty. This study explores association of altered duodenal permeability (lactulose, rhamnose and their ratio) with higher burden of enteropathogen in the duodenal aspirate, altered histopathological findings and higher morbidity (diarrhea) that is collectively associated with linear growth faltering in children living in EED endemic setting. In a longitudinal birth cohort, 51 controls (WHZ > 0, HAZ > −1.0) and 63 cases (WHZ< -2.0, refractory to nutritional intervention) were recruited. Anthropometry and morbidity were recorded on monthly bases up to 24 months of age. Dual sugar assay of urine collected after oral administration of lactulose and rhamnose was assessed in 96 children from both the groups. Duodenal histopathology (n = 63) and enteropathogen analysis of aspirate via Taqman array card (n = 60) was assessed in only cases. Giardia was the most frequent pathogen and was associated with raised L:R ratio (p = 0.068). Gastric microscopy was more sensitive than duodenal aspirate in H. pylori detection. Microscopically confirmed H. pylori negatively correlated with HAZ at 24 months (r = −0.313, p = 0.013). Regarding histopathological parameters, goblet cell reduction significantly correlated with decline in dual sugar excretion (p< 0.05). Between cases and controls, there were no significant differences in the median (25th, 75th percentile) of urinary concentrations (μg/ml) of lactulose [27.0 (11.50, 59.50) for cases vs. 38.0 (12.0, 61.0) for controls], rhamnose [66.0 (28.0, 178.0) vs. 86.5 (29.5, 190.5)] and L:R ratio [0.47 (0.24, 0.90) vs. 0.51 (0.31, 0.71)] respectively. In multivariable regression model, 31% of variability in HAZ at 24 months of age among cases and controls was explained by final model including dual sugars. In conclusion, enteropathogen burden is associated with altered histopathological features and intestinal permeability. In cases and controls living in settings of endemic enteropathy, intestinal permeability test may predict linear growth. However, for adoption as a screening tool for EED, further validation is required due to its complex intestinal pathophysiology.


2021 ◽  
Vol 141 (5) ◽  
pp. 75-80
Author(s):  
Nguyen Ngoc Tam ◽  
Nguyen Phuong Linh ◽  
Nguyen Trung Anh

This cross-sectional study aimed to investigate the factors associated with constipation among elderly patients with Parkinson’s disease (PD). The participants were recruited from the National Geriatric Hospital between July to September 2020. Constipation was diagnosed by using Bristol stool classification and Rome IV criteria. A total of 133 Parkinson older patients were enrolled in the study. In multivariable regression model, increased odds of constipation were significantly associated with low water consumption (adjusted OR 4.55), low vegetable consumption (adjusted OR 6.16) and dependent activities of daily living (ADL) (adjusted OR 3.98). ADL needs to be regularly assessed and water and vegetable consumption should be closely monitored in older PD patients in order to improve health and reduce risk of constipation.


2021 ◽  
Vol 10 (7) ◽  
pp. 1402
Author(s):  
Hyo-In Choi ◽  
Mi Yeon Lee ◽  
Byeong Kil Oh ◽  
Seung Jae Lee ◽  
Jeong Gyu Kang ◽  
...  

Fatty liver (FL), insulin resistance (IR) and obesity often coexist, but data on the independent impacts of these factors on N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels are scarce. We examined the impact of FL, IR and obesity on NT-proBNP levels using a large set of cross-sectional data. The associations of FL, IR and obesity with NT-proBNP were analyzed in 39,923 healthy adult participants. IR was estimated using a homeostasis model assessment-estimated insulin resistance (HOMA-IR) index. A multivariable regression model was conducted to identify associations between NT-proBNP and FL on abdominal ultrasound. FL, IR and obesity showed independent inverse associations with NT-proBNP after multiple adjustments for baseline characteristics. In a multivariable regression model adjusting for IR and obesity, FL was independently associated with lower levels of NT-proBNP (estimates, Exp(β) 0.864, 0.849–0.880). The combination of FL and IR was a powerful dual indicator, lowering NT-proBNP levels approximately 25% in the generally healthy study population. In conclusion, FL was independently associated with lower NT-proBNP levels. FL and a high HOMA-IR index are a powerful indicator combination for lower NT-proBNP levels. Further research is needed to elucidate the mechanism underlying the association between FL and NT-proBNP.


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