Multivariate Stepwise Linear Regression Analysis Research Articles

Diagnostic value of adenohypophyseal MRI features in female children with precocious puberty

To evaluate the diagnostic value of adenohypophyseal magnetic resonance imaging (MRI) features for precocious puberty (PP) in female children and also to establish a non-invasive diagnostic approach in clinics. A total of 126 female children (37, 57, and 32 female children clinically diagnosed with central PP [CPP], incomplete PP [IPP], and controls, respectively) were enrolled in this study. Data were collected and analysed using analysis of variance. Pearson correlation and stepwise multivariate linear regression analysis were used to examine the association and build prediction models. Receiver operating characteristic (ROC) analysis was used to evaluate the diagnostic efficacy. The values of adenohypophysis volume (aPV), adenohypophysis height (aPH), and signal-intensity ratio (SIR), height, weight, and seven laboratory testing characteristics were correlated closely with the activation status of the hypothalamic-pituitary-gonad axis in the different groups (all p<0.05). Model 1 including aPV, weight, and aPH and Model 2 including SIR, aPV, and height were built to obtain predicted luteinising hormone (LH; R2=0.271) and LH/follicle stimulating hormone (FSH; R2=0.311). ROC analysis showed the predicted LH, predicted LH/FSH, and aPV were the top 3 best predictors in distinguishing CPP from controls (AUC=0.969, 0.949, and 0.938) while predicted LH/FSH was the best predictor in distinguishing CPP from IPP and controls (AUC=0.829 and 0.828). The adenohypophysis volume itself and the prediction models including main adenohypophyseal MRI features increased diagnostic efficiency for PP and offered a non-invasive and credible diagnostic method.

Exploring food safety knowledge, attitudes, and practices of nursing and medical students: Insights from a cross‐sectional study in Bangladesh

AbstractThis study focuses on nursing and medical students, assessing their knowledge, attitudes, and practices (KAP) regarding food safety. This non‐random cross‐sectional study was conducted between October and December 2022, with 1100 students (721 nursing and 379 medical) completing self‐administered questionnaires. 949 (86.3%) of the respondents were female and 151 (13.7%) were male (mean age 20.90 ± 1.74). Nursing students outperformed medical students in food safety KAP scores (19.45 ± 3.19 vs. 19.13 ± 3.36), (10.61 ± 1.52 vs. 10.27 ± 1.80), and (46.96 ± 6.48 vs. 42.87 ± 6.49), with significant differences in food safety attitudes and practices (p &lt; 0.05), as well as knowledge regarding personal hygiene, food preparation, cooking, foodborne pathogens, and cross‐contamination (p &lt; 0.05). Multivariate stepwise linear regression analysis revealed predictors of food safety knowledge, including age, residence, academic year, personal food poisoning experience, and familiarity with food safety authority (p &lt; 0.05). Similarly, institutional context, gender, income, residential status, academic year, personal cooking habit, father's education level, and mother's education level had a substantial impact on the attitudes of students. Predictors of safe food handling practices encompassed institutional context, age, gender, family monthly income, residential status, academic year, father's education level, personal food poisoning experience, and familiarity with food safety authority (p &lt; 0.05). These findings highlighted the need for targeted educational interventions to improve food safety KAP among nursing and medical students considering their forthcoming responsibilities as carers.

Effects of different obesity evaluation indexes on long-term blood pressure variability in adults

Abstract Background In recent years, people have a new understanding of the treatment of hypertension. Even at the optimal blood pressure levels recommended by the guidelines, further attention to blood pressure variability is warranted. Obesity and overweight are associated with blood pressure variability, but existing studies mainly focus on the effect of traditional obesity indicators on blood pressure variability (BPV). Objectives To explore the correlation between the new obesity assessment indicators LAP, BRI, CVAI and blood pressure variability. Methods A total of 7092 subjects who had regular physical examination in a community health center, were included for analysis. We used new measures to assess obesity, including LAP, BRI, CVAI. Subjects were grouped according to the baseline CVAI quartile. We used variation independent of mean(VIM) to assess long-term variations in blood pressure. Variance analysis was used to analyze the differences among different blood pressure variables and their baseline characteristics. Stepwise multivariate linear regression and multiple logistic regression analyses were used to assess the impact of CVAI/LAP/BRI on VIM. Results The average age of the subjects was 60.7±6.8 years old. With the increase of CVAI and BRI, the mean blood pressure variability increased gradually. In contrast, the mean blood pressure variability decreases with increasing LAP. After adjusting for other confounding factors, multiple linear regression analysis showed that VIMSBP increased by 0.007 and 0.216 for each unit increase in CVAI and BRI, respectively. LAP found no correlation. Multiple logistic regression analysis showed that increased CVAI and BRI were risk factors for increased VIMSBP, and increased LAP was protective factor for increased VIMSBP. Conclusion Compared with traditional indicators, the novel obesity indicators were also associated with blood pressure variability. And it has a stronger correlation than traditional indicators.

The relationship between social support, psychological resilience, and positive coping among medical staff during emergency assistance for public health emergency

Abstract Aim To explore the factors associated with the coping styles in medical staff while providing emergency aid during public health emergencies. Subject and methods A cross-sectional study was conducted to investigate medical and nursing staff members from four hospitals in Zhejiang Province who participated in emergency assistance in Shanghai during the Omicron pandemic in April 2022. Results Sixty-nine out of 74 subjects completed the questionnaire. Stepwise multivariate linear regression analysis revealed that psychological resilience (β = 0.30, 95% CI: 0.30, 1.08, p = 0.001) and social support (β = 0.26, 95% CI: 0.06, 2.01, p = 0.039) were correlated with positive coping (β = 0.39, 95% CI: 0.21, 0.57, p &lt; 0.001), and friend support (β = 0.65, 95% CI: 0.28, 1.02, p = 0.001) significantly influenced positive coping. Conclusion Social support and psychological resilience are the main factors associated with the coping styles of medical staff. Tenacity and friend support are the main additional influencing factors for positive coping.

Serum Osteoprotegerin Levels and the Vascular Reactivity Index in Patients with Hypertension.

Background and Objectives: Osteoprotegerin (OPG), a soluble glycoprotein found in serum, has been associated with both the presence and severity of atherosclerosis. OPG is regarded as the mediator in the process of vascular endothelial dysfunction. Impaired endothelial function has an intimate link with hypertension (HTN) and is associated with significant morbidity and mortality. This study was to investigate the connection between OPG and endothelial dysfunction in patients having HTN. Materials and Methods: There are 102 patients with HTN included. For the purpose of determining the levels of OPG, a commercial enzyme-linked immunosorbent test kit was applied. The vascular reactivity index (VRI), which is assessed via the digital thermal monitoring, provides information on endothelial function. Results: Ten patients with HTN (9.8%) were classified as having poor vascular reactivity (VRI < 1.0), 46 HTN patients (45.1%) as having intermediate vascular reactivity (1.0 ≤ VRI < 2.0), and 46 HTN patients (45.1%) were classified as having high vascular reactivity (VRI ≥ 2.0). A greater serum OPG level (p < 0.001) and older age (p = 0.022) were linked to impaired vascular reactivity. The estimated glomerular filtration rate (r = 0.196, p = 0.048) was positively correlated with VRI values in hypertensive participants, while advanced age (r = -0.222, p = 0.025) and the log-transformed OPG level (log-OPG, r = -0.357, p < 0.001) were negatively correlated with VRI. Serum log-OPG level was shown to be strongly and independently correlated with VRI values in HTN individuals after multivariable forward stepwise linear regression analysis (β = -0.357, adjusted R2 change = 0.119, p < 0.001). Conclusions: In patients with HTN, serum OPG levels were adversely correlated with VRI and probably had a role in endothelial dysfunction.

Serum Trimethylamine N-Oxide Level Is Positively Associated with Aortic Stiffness Measured by Carotid-Femoral Pulse Wave Velocity in Patients Undergoing Maintenance Hemodialysis.

Trimethylamine N-oxide (TMAO) is a biomarker that is effective in predicting major adverse cardiovascular (CV) events. Age-related vascular problems are significantly affected by aortic stiffness (AS), which is independently linked to CV morbidity and mortality. This study aimed to determine the association between serum TMAO levels and carotid-femoral pulse wave velocity (cfPWV) in patients receiving hemodialysis (HD) therapy. In total, 115 patients with HD were enrolled in this study. The AS group included patients whose cfPWV was >10 m/s. Using high-performance liquid chromatography and mass spectrometry, the levels of serum TMAO were measured. The AS group included 42 (36.5%) patients, and compared with the non-AS group, the rates of diabetes, hypertension, older age, systolic blood pressure, serum glucose, and TMAO levels were high. In the multivariate logistic regression analysis, serum TMAO and age were independently linked with AS after correcting for the factors significantly associated with AS. Following multivariate stepwise linear regression analysis, serum TMAO in these individuals was found to be strongly correlated with cfPWV values (p < 0.001). In patients on chronic HD, serum TMAO level is an independent measure of AS and strongly correlated with cfPWV.

Study on Related Factors of the Treatment Zone After Wearing Paragon CRT and Euclid Orthokeratology Lenses.

To explore the influence factors of the treatment zone diameter (TZD) and its relationship with axial length growth (ALG) after wearing Paragon CRT and Euclid orthokeratology lenses. The right eye data of myopic patients wearing Paragon CRT and Euclid orthokeratology in the ophthalmology department of The First Affiliated Hospital of Soochow University were retrospectively reviewed from April 2019 to October 2022. The TZD and ALG were compared between the Paragon CRT and Euclid groups. The correlation factors of TZD after wearing lens for 1 month and the relationship between the overlapping treatment zone-to-pupil area ratio and the ALG after wearing lens for 1 year were analyzed between the two groups. There were 160 patients (160 eyes) in the Paragon CRT group and 155 patients (155 eyes) in the Euclid group. After wearing lens for 1 month, the TZD in the Paragon CRT group (3.72±0.37 mm) was larger than that in the Euclid group (3.26±0.37 mm) ( P <0.001). The stepwise multivariate linear regression analysis showed that the eccentricity at the flattest meridians (Em) and the central corneal thickness were correlated with the TZD in both groups ( P <0.05). After wearing lens for 1 year, the ALG in the Paragon CRT group (0.32±0.20 mm) was larger than that in the Euclid group (0.25±0.20 mm) ( P =0.001). The stepwise multivariate linear regression analysis showed that the initial wearing age and the overlapping treatment zone area-to-pupil area ratio were correlated with the ALG in both groups ( P <0.05). For both the Paragon CRT and Euclid orthokeratology, the wearers with thicker central corneal thickness and smaller Em usually had a smaller TZD. In both groups, the overlapping treatment zone area-to-pupil area ratio was correlated with the ALG.

Resistin: A Potential Indicator of Aortic Stiffness in Non-Dialysis Chronic Kidney Disease Patients.

Background and Objectives: In the progression and development of atherosclerosis, resistin plays a significant role. Chronic kidney disease (CKD), frequently associated with atherosclerosis, exhibits a marked increase in morbidity and mortality rates. This study set out to explore the association between aortic stiffness and serum levels of resistin in non-dialysis-dependent CKD patients ranging from stages 3 to 5. Materials and Methods: We collected fasting blood samples from 240 CKD patients across stages 3 to 5. The concentration of resistin in serum was determined using a commercially available enzyme immunoassay kit. Those patients who exhibited a carotid-femoral pulse wave velocity (cfPWV) greater than 10 m/s were identified as the aortic stiffness group. Results: Out of the 240 CKD patients, 88 (36.7%) were classified within the aortic stiffness group. This group demonstrated higher incidences of diabetes, advanced age, increased body weight, body mass index, body fat mass, systolic and diastolic blood pressure, fasting glucose, and serum resistin levels. Multivariate logistic regression analysis highlighted resistin, diabetes, and body weight as independent predictors of aortic stiffness. Additionally, body fat mass, logarithmically transformed cfPWV (log-cfPWV) values and log-triglyceride levels were independent predictors of log-resistin levels by multivariate stepwise linear regression analysis. Conclusions: In CKD patients from stages 3 to 5, a positive correlation exists between elevated serum resistin levels and cfPWV values, identifying resistin as a potential predictor of aortic stiffness.

Serum sclerostin level is positively associated with endothelial dysfunction measured by digital thermal monitoring in patients with type 2 diabetes: A prospective cross-sectional study.

Sclerostin and dickkopf-1 (DKK1), extracellular inhibitors of the canonical Wnt/β-catenin signaling pathway, have been associated with vascular aging and atherosclerosis. This study aimed to assess the correlation of sclerostin and DKK1 concentrations with endothelial function measured using vascular reactivity index (VRI) in patients with type 2 diabetes mellitus (T2DM). Fasting blood samples were collected from 100 patients with T2DM. Endothelial function and VRI were measured using digital thermal monitoring and circulating sclerostin and DKK1 levels by enzyme-linked immunosorbent assays. VRI values < 1.0, 1.0-1.9, and > 2.0 indicated poor, intermediate, and good vascular reactivity, respectively. Overall, 30, 38, and 32 patients had poor, intermediate, and good vascular reactivity, respectively. Older age, higher serum glycated hemoglobulin, urinary albumin-to-creatinine ratio, and sclerostin as well as lower hypertension prevalence, systolic blood pressure, and diastolic blood pressure (DBP) were associated with poor VRI. Multivariable forward stepwise linear regression analysis showed that DBP (β = 0.294, adjusted R2 change = 0.098, P < .001), log-glycated hemoglobin (β = -0.235, adjusted R2 change = 0.050, P = .002), log-urine albumin-to-creatinine ratio (β = -0.342, adjusted R2 change = 0.227, P < .001), and log-sclerostin level (β = -0.327, adjusted R2 change = 0.101, P < .001) were independently associated with VRI. Serum sclerostin, along with glycated hemoglobin and albumin-to-creatinine ratio, exhibited a negative correlation with VRI, while DBP showed a positive correlation with VRI. These factors can independently predict endothelial dysfunction in patients with T2DM.

Mimic toxicity of Beta-blocker drugs by structural base descriptors

QSAR study has been carried out on the set of 35 Beta-blocker drugs for the modelling of toxicity (Ld50), using topological indices. The stepwise multilinear regression analysis method is used for modelling and the obtained models are critically discussed and examined by various types of cross validation parameters

The Association between Serum Adiponectin Levels and Endothelial Function in Non-Dialysis-Dependent Chronic Kidney Disease Patients.

Adiponectin is the richest human circulating adipokine with anti-inflammatory, antioxidant, and insulin-sensitizing effects. We evaluated the association between serum adiponectin levels and endothelial function in chronic kidney disease (CKD) patients, obtaining fasting blood samples from 130 non-dialysis CKD subjects. We measured the endothelial function-represented by the vascular reactivity index (VRI)-via non-invasive digital thermal monitoring, and serum adiponectin concentrations by enzyme immunoassay kits. A total of 22 (16.9%), 39 (30.0%), and 69 (53.1%) patients had poor (VRI < 1.0), intermediate (1.0 ≤ VRI < 2.0), and good (VRI ≥ 2.0) vascular reactivity. Elevated serum blood urea nitrogen (BUN) level was negatively correlated with VRI values, but serum adiponectin and estimated glomerular filtration rate were positively associated with VRI values by univariate linear regression analysis. After applying multivariate stepwise linear regression analysis adjustment, the significantly positive association of adiponectin (p < 0.001), and the significantly negative association of log-BUN (p = 0.021) with VRI values in CKD subjects remained. In an animal study using in vitro blood-vessel myography, treatment with adiponectin enhancing acetylcholine-mediated vasorelaxation in 5/6 nephrectomy CKD mice. Our study results indicated that adiponectin concentration was positively associated with VRI values and modulated endothelial function in non-dialysis CKD patients.

Effects of olanzapine on anhedonia in schizophrenia: mediated by complement factor H.

Anhedonia is a trans-diagnostic symptom in schizophrenia and MDD. Our recent work indicated that increased plasma level of complement factor H (CFH) is associated with anhedonia in major depressive disorder. This study hypothesized that CFH is likely to be a biomarker of anhedonia in schizophrenia. A 12-week prospective study is performed to observe the effects of olanzapine on anhedonia and CFH. We used the Chinese version of Snaith-Hamilton Pleasure Scale (SHAPS) to evaluate anhedonic phenotype in patients with schizophrenia. Plasma levels of C-reactive protein (CRP), C3, C4 and CFH were measured. Of the recruited 152 samples, patients with anhedonia were found in 99/152 (65.13%). Patients with anhedonia had notably higher PANSS negative subscores, SHAPS total score and higher level of plasma CFH than those without anhedonia (Ps<0.05). Stepwise multivariate linear regression analysis showed that increasing level of plasma CFH was a risk factor for SHAPS total score (β = 0.18, p = 0.03). Of the 99 patients with anhedonia, 74 completed the 12-week follow-up. We observed significantly reduced scores of PANSS, SHAPS and decreased plasma CFH level, when the patients completed this study. The change of SHAPS total score is positively correlated with the level of CFH decrease (p = 0.02). Our results implied that plasma CFH levels may be a biomarker for anhedonia in schizophrenia, and the effect of olanzapine on treating anhedonia is through decreasing plasma CFH levels.

Aortic flow is associated with aging and exercise capacity.

Increased blood flow eccentricity in the aorta has been associated with aortic (AO) pathology, however, its association with exercise capacity has not been investigated. This study aimed to assess the relationships between flow eccentricity parameters derived from 2-dimensional (2D) phase-contrast (PC) cardiovascular magnetic resonance (CMR) imaging and aging and cardiopulmonary exercise test (CPET) in a cohort of healthy subjects. One hundred and sixty-nine healthy subjects (age 44 ± 13 years, M/F: 96/73) free of cardiovascular disease were recruited in a prospective study (NCT03217240) and underwent CMR, including 2D PC at an orthogonal plane just above the sinotubular junction, and CPET (cycle ergometer) within one week. The following AO flow parameters were derived: AO forward and backward flow indexed to body surface area (FFi, BFi), average flow displacement during systole (FDsavg), late systole (FDlsavg), diastole (FDdavg), systolic retrograde flow (SRF), systolic flow reversal ratio (sFRR), and pulse wave velocity (PWV). Exercise capacity was assessed by peak oxygen uptake (PVO2) from CPET. The mean values of FDsavg, FDlsavg, FDdavg, SRF, sFRR, and PWV were 17 ± 6%, 19 ± 8%, 29 ± 7%, 4.4 ± 4.2 mL, 5.9 ± 5.1%, and 4.3 ± 1.6 m/s, respectively. They all increased with age (r = 0.623, 0.628, 0.353, 0.590, 0.649, 0.598, all P < 0.0001), and decreased with PVO2 (r = -0.302, -0.270, -0.253, -0.149, -0.219, -0.161, all P < 0.05). A stepwise multivariable linear regression analysis using left ventricular ejection fraction (LVEF), FFi, and FDsavg showed an area under the curve of 0.769 in differentiating healthy subjects with high-risk exercise capacity (PVO2 ≤ 14 mL/kg/min). AO flow haemodynamics change with aging and predict exercise capacity. NCT03217240.

Clinical and Laboratory Correlates of QTc Duration in Adult and Pediatric Sickle Cell Disease

BackgroundSickle cell disease, a common genetic disorder in African Americans, manifests an increased risk of sudden death, the basis of which is incompletely understood. Prolongation of heart rate–corrected QT (QTc) interval on the electrocardiogram, a standard clinical measure of cardiac repolarization, may contribute to sudden death by predisposing to torsades de pointes ventricular tachycardia. MethodsWe established a cohort study of 293 adult and 121 pediatric sickle cell disease patients drawn from the same geographic region as the Jackson Heart Study (JHS) cohort, in which significant correlates of QT duration have been characterized and quantitatively modeled. Herein, we establish clinical and laboratory correlates of QTc duration in our cohort using stepwise multivariate linear regression analysis. We then compared our adult sickle cell disease data to effect-size predictions from the published JHS statistical model of QT interval duration. ResultsIn adult sickle cell disease, gender, diuretic use, QRS duration, serum ALT levels, anion gap, and diastolic blood pressure show positive correlation; hemoglobin levels show inverse correlation; in pediatric sickle cell disease, age, hemoglobin levels, and serum bicarbonate and creatinine levels show inverse correlation. The mean QTc in our adult sickle cell disease cohort is 7.8 milliseconds longer than in the JHS cohort, even though the JHS statistical model predicts that the mean QTc in our cohort should be >11 milliseconds shorter than in the much older JHS cohort, a differential of >18 milliseconds. ConclusionSickle cell disease patients have substantial QTc prolongation relative to their age, driven by factors, some overlapping, in adult and pediatric sickle cell disease, and distinct from those that have been defined in the general African American community.

HIGH SERUM TRIMETHYLAMINE N-OXIDE LEVEL IS ASSOCIATED WITH ENDOTHELIAL DYSFUNCTION IN PATIENTS WITH HYPERTENSION

Objective: Trimethylamine N-oxide (TMAO) is a metabolite derived from gut microbial metabolism and dietary intake and plays important roles in cardiovascular disease pathogenesis. Endothelial dysfunction is associated with risk factors of cardiovascular disease in patients with hypertension. The present study aimed to determine the correlation between serum TMAO and endothelial function, measured by vascular reactivity index (VRI) in patients with hypertension. Design and method: The present study collected fasting blood samples from 110 patients with hypertension. Serum TMAO levels were determination of by high-performance liquid chromatography–mass spectrometry. The endothelial function and VRI values were measured using digital thermal monitoring test, and VRI values of &gt;2.0, 1.0–1.9 and &lt;1.0 indicated good, intermediate and poor vascular reactivity, respectively. Results: Ten hypertensive patients (9.1%) were categorized as poor vascular reactivity (VRI &lt; 1.0), 57 hypertensive patients (51.8%) were categorized as intermediate vascular reactivity (1.0 &lt; VRI &lt; 2.0), and 43 hypertensive patients had good vascular reactivity. Older age (P = 0.010), higher levels of serum total cholesterol (TCH, P = 0.007), low-density lipoprotein cholesterol (LDL-C, P = 0.009), and TMAO levels (P &lt; 0.001) were associated with poor vascular reactivity. Furthermore, after multivariable forward stepwise linear regression analysis noted that logarithmically transformed serum level of TMAO (log-TMAO, adjusted R2 change = 0.274, P &lt; 0.001) was significantly and independently associated with VRI values in hypertensive patients. Compared with good vascular reactivity index, patients with vascular reactivity dysfunction (intermediate vascular reactivity and poor vascular reactivity; odds ratio (OR) = 1.100; 95% confidence interval (CI) = 1.047–1.155; P &lt; 0.001) or poor vascular reactivity (OR = 1.580, 95% CI = 1.002–2.492, P = 0.049) also noted TMAO was positively associated with poor vascular reactivity after multivariate logistic regression analysis. Conclusions: Serum TMAO levels were negatively associated with VRI and associated with endothelial dysfunction in patients with hypertension.

SERUM N-TERMINAL PRO-B-TYPE NATRIURETIC PEPTIDE LEVEL IS NEGATIVELY ASSOCIATED WITH VASCULAR REACTIVITY INDEX BY DIGITAL THERMAL MONITORING IN PATIENTS WITH HYPERTENSION

Objective: B-type natriuretic peptide (BNP) participates in the coordination of endothelial regeneration/hypertrophy and the accompanying angiogenesis. Endothelial dysfunction is associated with increased mortality in patients on hypertension. The present study aimed to determine the relationship between serum N-terminal pro-B-type natriuretic peptide (NT-pro-BNP) level and endothelial dysfunction in patients with hypertension Design and method: The present cross-sectional, single-center study included 90 hypertension patients. An electrochemiluminescence immunoassay was used to measure NT-pro-BNP levels. The endothelial function and vascular reactivity index (VRI) were measured using digital thermal monitoring (DTM) test (VENDYS). In this study, VRI &lt; 1.0 was used as the poor vascular reactivity, 1.0 &lt; VRI &lt; 2.0 was used as the intermediate vascular reactivity, and VRI &gt; 2.0 was used as the good vascular reactivity. Results: Eight hypertensive patients (8.9%) were categorized as poor vascular reactivity (VRI &lt; 1.0), 39 hypertensive patients (43.3%) were categorized as intermediate vascular reactivity (1.0 &lt; VRI &lt; 2.0), and 43 hypertensive patients had good vascular reactivity. Older age (p = 0.012) and higher serum NT-pro-BNP level (p &lt; 0.001) was associated with poor vascular reactivity. Advanced age (r = -0.221, p = 0.036) and logarithmically transformed serum level of NT-pro-BNP (log-NT-pro-BNP, r = -0.505, p &lt; 0.001) was negatively associated with VRI values in hypertensive patients. After multivariable forward stepwise linear regression analysis noted that serum log-NT-pro-BNP level (adjusted R2 change = 0.246, p &lt; 0.001) was significantly and independently associated with VRI values in hypertensive patients. Conclusions: Serum log-NT-pro-BNP levels were negative associated with VRI and associated with endothelial dysfunction in patients with hypertension.

PREVALENCE AND MORPHOLOGIC BIOMARKERS OF METAMORPHOPSIA IN EYES WITH "RESOLVED" CHRONIC CENTRAL SEROUS CHORIORETINOPATHY.

To assess relationships between demographics, clinical characteristics, and optical coherence tomography characteristics with persistence of metamorphopsia after resolution of subretinal fluid in eyes with chronic central serous chorioretinopathy. One-hundred participants with "resolved" (absence of subretinal fluid) chronic central serous chorioretinopathy were retrospectively analyzed. Patients underwent a complete ophthalmologic evaluation, including assessment of the presence of metamorphopsia. At the study visit, optical coherence tomography scans were reviewed for qualitative and quantitative features. Sixty-six of 100 patients (66.0%) complained of metamorphopsia. Both the foveal and parafoveal ganglion cell complex thicknesses were thinner in central serous chorioretinopathy eyes with metamorphopsia (35.1 ± 10.6 µ m and 82.0 ± 18.1 µ m vs. 40.7 ± 11.8 µ m and 93.1 ± 13.5 µ m, P = 0.030 and P < 0.0001). In the foveal region, the outer plexiform layer and outer nuclear layer thicknesses were thinner in patients with metamorphopsia (24.6 ± 8.5 µ m and 63.1 ± 20.9 µ m vs. 29.1 ± 8.7 and 76.2 ± 18.2 µ m, P = 0.016 and P = 0.005). The ellipsoid zone band was more frequently discontinued in eyes with metamorphopsia (56.1% vs. 35.3%, P = 0.039). Multivariate stepwise linear regression analysis demonstrated that the strongest associations with the presence of metamorphopsia were with parafoveal ganglion cell complex thickness ( P = 0.004), foveal outer nuclear layer thickness ( P = 0.010), and number of previous recurrences of subretinal fluid accumulation ( P = 0.017). The time interval from the last subretinal fluid resolution was not associated with the presence of metamorphopsia. In "resolved" central serous chorioretinopathy, clinical aspects (i.e., number of previous recurrences) and structural changes (i.e., ganglion cell complex and outer nuclear layer thinning) are associated with metamorphopsia after subretinal fluid resolution.

Psychiatric Nurses' Knowledge, Attitudes, and Practice Regarding Physical Restraint in China: A Multicentre Cross-Sectional Study.

Physical restraint is widely used in mental health services to address safety concerns. However, studies have shown that improper physical restraint can result in adverse effects. Nurses are the main practitioners of physical restraint and play a crucial role in physical restraint decisions and nursing. In China, there is a lack of large-scale investigations into the current status of psychiatric physical restraint use. This study aims to explore the situation and influencing factors of the psychiatric nurses' knowledge, attitudes and practices regarding physical restraint in China. A cross-sectional multicenter descriptive study was conducted from December 2022 to February 2023, consecutively. A convenience sampling method was used to recruit 345 staff from three psychiatric hospitals in Shanghai. A psychiatric nurses' physical restraint use status questionnaire was administered to examine their knowledge, attitude, and practice regarding physical restraint. The data were analyzed using the Mann-Whitney U-test and the Kruskal-Wallis test. Multivariate linear stepwise regression analysis was used for multi-factor analysis. Overall, nurses had a good level of knowledge with positive attitudes and adequate practices. However, they had some misunderstandings and undesirable practices. Multiple linear regression analysis revealed that educational background, position and training experience were the main factors influencing physical restraint knowledge, attitudes and practice among psychiatric nurses (p<0.05). This study highlights some important misconceptions and improper practices of psychiatric nurses about using physical restraint. It is necessary to strengthen education and training on physical restraint for nursing staff to reduce unnecessary physical restraint use.

Gender similarities and differences in the perception of caring among nurses during the COVID-19 pandemic: a mixed-methods study

BackgroundCaring is the essence and core of nursing. Current studies on the effect of gender on nurses’ perception of caring have been inconsistent. Most of these studies were quantitative and conducted before the COVID-19 pandemic. The study aimed to explore the gender similarities and differences in nurses’ perception of caring during the COVID-19 pandemic.MethodsIn 2020, a cross-sectional mixed-method study was conducted in 11 cities in China using structured online questionnaire (n = 8030) and face-to-face individual interview (n = 42). Data collection tools included the Caring Dimensions Inventory and semi-structured interview.ResultsIn stepwise multivariable linear regression analysis, female nurses scored 1.93 points higher on caring than male nurses, after completely controlling for the other factors. The interview results showed that both male and female nurses agreed that caring was to deal with three kinds of relationships, namely nurses and people, nurses and themselves, nurses and society. There were gender differences in the connotation of caring between nurses and themselves, but not in the connotations of caring between other relationships. The ranking of the importance of caring connotations among these relationships showed no gender difference except between nurses and themselves.ConclusionThe quantitative findings suggest that gender influences nurses’ perception of caring. The qualitative findings demonstrate that nurses regard themselves as both recipients and implementers of caring. The qualitative results indicate nurses of different genders have similarities and differences in their perception of caring, and the biggest difference lies in the relationship between nurses and themselves.

Morphological features of basivertebral foramen among different age groups: Recognition in spine.

Basivertebral foramen (BF) is a vessel and nerve passage in the posterior wall of vertebral body (VB). Our goal was to report BF's morphological characteristics in different age groups of mainland Chinese adults and to evaluate the relationship between BF's morphology and factors such as age, gender, heavy work, size and level of VB. We enrolled 300 adults among persons who came to our hospital for health examination. We measured BFs and VBs' parameters on T1 weighted sagittal lumbar spine MR images. We also assessed following potential predictors: gender, body height, body weight, body mass index, alcohol use, habits of smoking and drinking, type of work (physical work or non-physical work). A stepwise multivariate linear regression analysis was conducted to identify predictors of BF's height. People above 60 have significantly bigger BFHr than those in young adulthood and in the middle ages at all five levels, while they have shallowest BFs, especially at L3. Multiple linear regression resulted in a formula that accounted for 30.1% of the variability in the height of basivertebral foramen. Significant predictors included: gender, age, level, vertebral height and heavy work. Age is the highest weight in all factors on the height of BF. BF is closer to the upper endplate. The BF was relatively higher and deeper in the female lumbar spine. Heavywork results in lower BF. Last but not the least, as we supposed, BF gets shallower and higher compare to VB with age. Prognostic level III. See instructions for authors for a complete description of levels of evidence.