Single Factor Correlation Analysis Research Articles

Analysis of serum undercarboxylated osteocalcin level in rats with type 2 diabetes mellitus and the correlation with cognitive impairment.

The aim of the study was to investigate the correlation between the serum undercarboxylated osteocalcin (ucOC) level and the blood biochemistry and cognitive impairment in rats with type 2 diabetes mellitus (T2DM). Sprague-Dawley (SD) rats were randomly divided into the normal control group (NC) and type 2 DM group. DM group received the high-fat and high-sugar diet combined with the intraperitoneal injection of low-dose STZ to establish the type 2 DM rat model. After 12 weeks of feeding, a Morris water maze was used to observe the rats' cognitive ability, and the levels of blood lipid, ucOC, insulin and adiponectin in the two groups were measured. The results showed that blood glucose of rats in DM group was increased significantly at 2–12 weeks (p<0.01) and the body weight was significantly increased at 4–12 weeks (p<0.01). The levels of serum triglyceride (TG), total cholesterol, low-density lipoprotein and insulin in rats in DM group were significantly increased compared with those in NC group (p<0.01) and the levels of high-density lipoprotein, adiponectin and ucOC were significantly decreased compared with those in the NC group (p<0.01). The place navigation and spatial exploration capacities of rats in DM group were significantly decreased compared with those in NC group (p<0.01). In the DM group, the place navigation and spatial exploration capacities of rats in the low ucOC group were significantly decreased compared with those in the high ucOC group (p<0.01). Additionally, single-factor correlation analysis revealed that ucOC was negatively correlated with blood glucose, TG and escape latency (p<0.01), but was positively correlated with adiponectin, residence time in target quadrant and traversing times (p<0.05 or p<0.01). In conclusion, the decreased serum ucOC level in rats with type 2 diabetes mellitus has a certain correlation with cognitive impairment.

Establishment of a model to evaluate the nutritional quality of Bombyx mori Linnaeus (Lepidoptera, Bombycidae) pupae lipid based on principal components

Silkworm pupae are a source of edible lipid with a high content of unsaturated fatty acids (UFAs) (70% of total lipid content) and are becoming a focus of pharmaceutical and dietary research in the functional oil field. To study the nutritional value of different silkworm strains, principal component analysis (PCA) was used to establish a mathematical model and cluster analysis on silkworm pupae lipid (SPL) in 90 strains based on Z-score. Single-factor correlation analysis indicated that the PUFAs content was significantly positively correlated with the α-linolenic acid (ALA) (ρ=0.98) and negatively correlated with the oleic acid (OA) (ρ=−0.73) contents, and comprehensive of principal components mathematical model (PC=0.148ZX1+0.002ZX2−0.197ZX3−0.338ZX4+0.220ZX5+0.304ZX6+0.314ZX7, ZXi is the standard score (Z-score) of X1, which was calculated as follow: ZXi=(Xi−X−)/S, where X1: palmitic acid, X2: palmitoleic acid, X3: stearic acid, X4: OA, X5: linoleic acid, X6: ALA, X7: PUFAs. X− is the arithmetic mean content of variable i, and S is the standard deviation of variable i for all samples included in the analysis.) showed the amount of ALA and PUFAs were the key factors determining the nutritional value of the pupae lipid. Cluster analysis on the composite scores calculated by the model of the principal component divided the 90 strains into three groups. A cluster of 6 strains (XHR, XIFF, ZX, YT, YO and BTN) with the best nutritional value was characterized by high contents of ALA and PUFAs and a low content of oleic acid.

Using the Job Burden-Capital Model of Occupational Stress to Predict Depression and Well-Being among Electronic Manufacturing Service Employees in China.

Background: This study aimed to identify the association between occupational stress and depression-well-being by proposing a comprehensive and flexible job burden-capital model with its corresponding hypotheses. Methods: For this research, 1618 valid samples were gathered from the electronic manufacturing service industry in Hunan Province, China; self-rated questionnaires were administered to participants for data collection after obtaining their written consent. The proposed model was fitted and tested through structural equation model analysis. Results: Single-factor correlation analysis results indicated that coefficients between all items and dimensions had statistical significance. The final model demonstrated satisfactory global goodness of fit (CMIN/DF = 5.37, AGFI = 0.915, NNFI = 0.945, IFI = 0.952, RMSEA = 0.052). Both the measurement and structural models showed acceptable path loadings. Job burden and capital were directly associated with depression and well-being or indirectly related to them through personality. Multi-group structural equation model analyses indicated general applicability of the proposed model to basic features of such a population. Gender, marriage and education led to differences in the relation between occupational stress and health outcomes. Conclusions: The job burden-capital model of occupational stress-depression and well-being was found to be more systematic and comprehensive than previous models.

Clinical significances of associated injuries of radial head fracture

Objective To explore the relationship between a radial head fracture and its associated injuries and the effect of associated injuries on the treatment. Methods We retrospectively analyzed the patients with radial head fracture who had been treated from December 2013 to December 2015. The data of their gender, age, laterality, traumatic mechanisms, Mason classification of the fracture, associated injuries, and therapeutic methods were documented. Single factor correlation analysis was conducted to identify the relationship between Mason classification and number of associated injuries, and the effects of age, Mason classification and number of associated injuries on the therapeutic methods. Results The study cohort was comprised of 61 patients, including 32 men and 29 women with a male to female ratio of 1. 1∶1. They were 20 to 78 years of age(average, 40 years). Thirty-one cases had the left elbow affected, 29 the right elbow, and one bilateral elbows. There were 17 cases of Mason Type I, 30 ones of Mason Type Ⅱ, 9 ones of Mason Type Ⅲ, and 5 ones of Mason Type Ⅳ. Ligamentous injury was associated in 47 patients, coronoid fracture in 5, distal humeral fracture in 5, capitellum osteochondral defect in 17, olecranon fracture in 2, and proximal radioulnar fracture in 2. Thirty-three patients had nonoperative treatment; 26 patients received open reduction and internal fixation; one patient underwent resection; radial head replacement was used in one. Single factor correlation analysis revealed no significant associations between number of associated injuries and gender, age, or laterality(P> 0. 05), a positive correlation between severity of radial head fracture(Mason classification)and incidence of associated injuries(P< 0. 05), and significant relationships between choice of therapy and age, Mason classification and number of associated injuries(P< 0. 05). Conclusions There may be a significant relationship between the Mason type and number of the associated injuries. The more severe a radial head fracture, the more associated injuries. Age, Mason classification, and number of associated injuries may affect the choice of therapeutic methods. In the treatment of radial head fractures, associated injuries must be considered carefully to minimize their impact. The therapy should depend on the associated injuries. Key words: Elbow joint; Radial fractures; Associated injuries; Traumatic mechanisms

Effectiveness of farmland transfer in alleviating farmland abandonment in mountain regions

Farmland abandonment is a type of land use change in the mountain region, and this change is under rapid development. Whether farmland transfer can prevent this process and promote the effective allocation of land resources or not is a question worth studying and discussion. With the help of the previous research findings, the objective of this paper was to find out the role of farmland transfer on preventing farmland abandonment, by using the methods of multiple view with two factors, and single factor correlation analysis. The results showed that: (1) At village level, a significant negative correlation between farmland transfer and farmland abandonment existed in the study site, with R 2 = 0.7584. This correlation of farmland with high grade farming conditions presented more outstandingly. The fitted curve for the farmland at Level I had the largest R 2 at 0.288, while that for the farmland at Level IV had the smallest R 2 at 0.103. Which indicated that farmland transfer could prevent the abandonment of farmland with high grade farming conditions? (2) At plot level, the abandonment rate of farmland with high grade farming conditions was significantly lower than that of farmland with poor grade farming conditions. It was the lowest at 10.49% for the farmland with Level I farming conditions, whereas the farmland with Level I farming conditions was 26.21%. Abandoned farmland was mainly contributed by farmland with Level IV farming conditions in the study site. (3) At village level, the role of farming conditions on farmland abandonment was insignificant. The univariate correlation analysis revealed that the abandonment ratio was negatively correlated with the proportions of farmland at Levels I and II and their accumulated proportion; however, their R 2 were small at 0.194, 0.258, and 0.275, respectively. The abandonment of farmland with high farming conditions still existed. The abandonment ratios of farmland at Levels I and II were high at 9.96% and 10.60%, respectively. This presented that farmland transfer on behalf of the land rental market was still not developed. (4) However, the village possessed the high rate of farmland transfer, and its rate of farmland abandonment with high grade farming conditions was all lower. When the transfer ratios of farmland were over 20%, the abandonment ratios of farmland at Levels I and II were 6.47% and 6.92%, respectively. Farmland abandonment was still controlled by the improvement of land rental market. And the functions of land rental market optimizing the utilization of farmland resources have been presented to a certain degree. (5) To further improve the marketing degree of land rental, the probability of farmland abandonment could be reduced. Especially, their function to farmland with high grade farming conditions was very obvious, and could avoid the waste of farmland resources with high grade farming conditions.

Influencing factors and nursing strategy research on self-efficacy among patient with laryngeal cancer and neck stoma

Objective To evaluate the status of self-efficacy and explore its influencing factors in patients with Laryngeal cancers and neck stoma, so as to improve their self-efficacy and their quality of life. Methods Eighty-four patients with neck stoma, who visited or followed up laryngocarcinoma in outpatient in one first-class hospital, were sampled by convenient sampling method during July 2013 to February 2014. General social-demographic questionnaire, colostomy self-efficacy scale, Social support scale and Self-Rating Depression Scale were used to investigate these patients′ general information and self-efficacy. Results The total score of self-efficacy in eighty-four Laryngeal cancers with neck stoma was (76.56±24.47) points, the main influencing factors of self-efficacy in Laryngeal cancers with neck stoma were social support, depression, the time after operation. Relevant factors of self-efficacy had been utilized by single factor correlation analysis and multiple stepwise regressions to analyze. Conclusions The self-efficacy in patients with laryngeal cancer and neck stoma is affected by many factors at different levels, and nurses should focus on main influencing factors to adopt corresponding nursing measures in order to improve self-efficacy and quality of life of these patients. Key words: Laryngeal cancer; Nursing care; Neck stoma; Self-efficacy; Influencing factors

Serum Hepcidin Level Correlates With Hyperlipidemia Status in Patients Following Allograft Renal Transplantation

Hepcidin is synthesized and secreted by liver cells and has been reported as one of the hormone molecules that regulates iron homeostasis. To determine whether serum level of hepcidin can be used as a biomarker for the evaluation of chronic inflammatory status, iron level and renal function in patients following allograft renal transplantation, serum levels of hepcidin, interleukin (IL)-6, ferritin, serum iron, and renal functions were measured. Sixty patients were included in the current study and were further separated into groups with or without hyperlipidemia. We found that allogeneic kidney transplant recipients with hyperlipidemia have significantly increased serum levels of hepcidin, IL-6, and ferritin. The increased serum hepcidin is positively correlated with serum IL-6 and ferritin as analyzed by single-factor correlation analysis. Multivariant correlation analysis in all specimens further demonstrated that serum hepcidin negatively correlated with glomerular filtration rate, and positively correlated with serum total cholesterol, triglycerides, serum ferritin, and IL-6. Our study demonstrated that serum level of hepcidin after allogeneic kidney transplantation not only reflects the status of chronic inflammation but can also indicate changes in renal function. Thus, hepcidin has the potential to be used as a promising marker for the detection and monitoring of the status of chronic inflammation, hyperlipidemia, and renal function in patients following allograft renal transplantation.

Investigation of the level of self-esteem in the hospitalized patients with schizophrenia

Objective To understand the level of self-esteem of the hospitalized patients with schizophrenia and analysis relevant factors,in order to provide a reference for more targeted and effective nursing measures.Methods Totally 105 hospitalized patients with schizophrenia were investigated with self-made questionnaire and Self-Esteem Scale (SES) on their self-esteem level and a total of 15 different factors,and to evaluate these data by using single factor correlation analysis and multiple stepwise regression analysis.Results The SES average score of inpatients with schizophrenia was (19.11 ± 3.92),which was significantly lower than the national norm of (28.75 ± 4.86),and the difference was statistically significant (t =-25.137,P ＜0.01).The correlation analysis of the self-esteem level and influence factors showed that the eight factors which including age,education level,marital status,first onset age,duration,frequency of hospitalization,treatment/remission and social support,were correlated with the level of self-esteem (P ＜ 0.05) ; The stepwise multiple regression results indicated that the main factors affecting self-esteem were duration,frequency of hospitalization,social support,marital status and age.Conclusions The self-esteem level of the hospitalized patients with schizophrenia is in the low level; we should pay more attention to these relevant factors in the clinical nursing work,in order to make and conduct targeted nursing measures. Key words: Schizophrenia; The level of self-esteem; Influence factors

Statistical Analysis of Ionization Energy Correlations and of Integral Quantum Characteristics in the Series of Anthraquinone Derivatives

The classes of anthraquinone derivatives, containing OC6H4?(??3)3 and NC5H10 groups have been investigated. Quantum-chemical calculations with the help of semiempirical method PM3 and absorption spectra in the visible and UV-areas have been carried out. With the use of single factor regression and correlation analysis, the linear correlations between the vertical ionization potentials and the integral strength of the oscillator have been ascertained. This fact indicates strong electron correlation between the highest and the low electron levels of molecules. The errors for the ionization potentials have been calculated.

Integrated Bed and Breakfast into Eco-Tourism in Guan Ziling areas in Taiwan

This research was to explore integrated the Bed and Breakfast (B & B) into eco-tourism through the visitors in the Guan Ziling area in Taiwan. This research used the convenience sampling method to carry on the questionnaire survey. The methods of investigation on this research obtained material analysis method, descriptive statistics, factor analysis, letter analysis, independent sample t examination analysis, single factor variance analysis and correlation analysis. The findings on this research are shown: (1) there is no remarkable difference in gender between “Bed and Breakfast” and “eco-tourism”; (2) there is no significant difference in age various between “Bed and Breakfast” and “eco-tourism”; it is makeable significant in the ecology landscape; (3) there are no remarkable difference between “Bed and Breakfast” and “eco-tourism” in the salary level, education level, the attraction in the different type of “Bed and Breakfast”, and the view of lodging attraction; (4) there is remarkable significant between “Bed and Breakfast” and “the eco-tourism” in the union variable relativities.

A statistical method for determining the hydrocarbon accumulation coefficient and its application to assessment of hydrocarbon resources in Huanghekou Sag, Bohai Bay Basin, Eastern China

Abstract Hydrocarbon Accumulation Coefficient (HAC) is an important parameter in the genetic method of hydrocarbon resource assessment. This parameter is usually derived from a simple geological analogy or from expert judgment based on experience, which can lead to large uncertainties in hydrocarbon resource assessment results. In this article, we introduce a new method for determining the HAC, based on Single Factor Correlation Analysis and Multivariate Regression Analysis, using data collected from basins with a high degree of exploration maturity and large amounts of proven reserves. Firstly, the principal factors that control the hydrocarbon accumulation coefficient, such as the time ratio of peak expulsion and caprock formation, the ratio of maximum fault throw and caprock thickness, and the rate of fault displacement, are determined by Single Factor Correlation Analyses. A quantitative model can then be established between HAC and the principal controlling factors using the Multivariate Regression Analysis. The proposed method was applied to the Huanghekou Sag in Bohai Bay Basin, eastern China. The results show that the HAC is 29% in the Huanghekou Sag, with a total resource of 1435 × 106 m3 oil equivalent, which is consistent with geological observations of this basin and suggests that the proposed method improves the applicability of the generic method in resource assessment.

Correlation analysis for the attack of bacillary dysentery and meteorological factors based on the Chinese medicine theory of Yunqi and the medical-meteorological forecast model

To explore the impact of meteorological factors on the outbreak of bacillary dysentery, so as to provide suggestions for disease prevention. Based on the Chinese medicine theory of Yunqi, the descriptive statistics, single-factor correlation analysis and back-propagation artificial neural net-work were conducted using data on five basic meteorological factors and data on incidence of bacillary dysentery in Beijing, China, for the period 1970-2004. The incidence of bacillary dysentery showed significant positive correlation relationship with the precipitation, relative humidity, vapor pressure, and temperature, respectively. The incidence of bacillary dysentery showed a negatively correlated relationship with the wind speed and the change trend of average wind speed. The results of medical-meteorological forecast model showed a relatively high accuracy rate. There is a close relationship between the meteorological factors and the incidence of bacillary dysentery, but the contributions of which to the onset of bacillary dysentery are different to each other.

Quality of life in patients with primary congenital glaucoma following antiglaucoma surgical management

To evaluate the 23-item scale of Quality of Life (QOL) for patients with primary congenital glaucoma (PCG). It was a cross-sectional study. The QOL scale specific for patients with PCG was firstly evaluated on 51 patients with PCG following antiglaucoma surgery at last followup visit (7.80 years +/- 2.93 years with a median at 7 years) and 50 participants with normal visual acuity (VA) as control. All participants were aged 5-20 years old. The QOL of PCG was evaluated with type of disease, severity, surgical outcome, postoperative VA, age, gender and personality by using single-factor correlation analysis and multiple-factor stepwise regression analysis. The PCG-QOL scale achieved good reliability, validity and responsibility for PCG and 23-item were all qualified for QOL evaluation of PCG. The total scores of QOL in patients with PCG were significantly lower than those of normal individuals (PCG 60.22 +/- 10.02,normal individuals 71.41 +/- 10.11; t = 5.682, P = 0.000). Single-factor correlation analysis showed that the total scores of QOL were associated significantly with the severity of glaucoma (F = 24.026, P = 0.000), surgical outcome (t = 2.638, P = 0.009) and postoperative VA (F = 11.248, P = 0.000); The visual function scores were associated significantly with the severity (F = 12.677, P = 0.000) and postoperative VA (F = 10.369, P = 0.000). The self-care ability scores were associated significantly with the severity (F = 11.064, P = 0.000) and surgical outcome (t = 2.297, P = 0.042). The social and mental scores were all correlated significantly with the severity (F = 6.869, P = 0.020; F = 5.721, P = 0.019) and personality (t = 4.352, P = 0.009; t = 2.297, P = 0.042). Multiple-factor stepwise regression analysis showed that there were significant correlations between total scores and the severity (P3 = -6.985, P = 0.001), postoperative VA (beta = -4.978, P = 0.003) and personality (13 = -5.201, P = 0.020). The PCG-QOL scale could be used for evaluating the QOL of PCG patients aged 5-20 years. The main factors that influence on the QOL of patients with PCG are severity of the disease, postoperative VA and personality. Preventing progression of glaucoma, improving VA and giving right psychological guidance may improve the QOL of patients with PCG.