Factor analysis

因子分析
  • 文章类型: Journal Article
    在COVID-19大流行导致的封锁时期,已发现一些学生无法投入足够的时间进行教育。他们对辍学表现出沮丧甚至冷漠的迹象。此外,恐惧的感觉,焦虑,绝望,和抑郁症现在存在,因为社会还不能适应新的生活方式。因此,本文分析了墨西哥COVID-19大流行期间,Misantla技术学院的大学生在使用远程教育工具时的感受。结果表明,隔离,由于大流行的情况,产生高度的焦虑和抑郁。此外,在使用电子学习平台时,封锁产生的感觉和学校表现之间存在联系。这项研究的发现反映了学生的感受,有用的信息,可以导致教学策略的发展和实施,从而提高学生的学业成绩。
    In times of lockdown due to the COVID-19 pandemic, it has been detected that some students are unable to dedicate enough time to their education. They present signs of frustration and even apathy towards dropping out of school. In addition, feelings of fear, anxiety, desperation, and depression are now present because society has not yet been able to adapt to the new way of living. Therefore, this article analyzes the feelings that university students of the Instituto Tecnológico Superior de Misantla present when using long distance education tools during COVID-19 pandemic in Mexico. The results suggest that isolation, because of the pandemic situation, generated high levels of anxiety and depression. Moreover, there are connections between feelings generated by lockdown and school performance while using e-learning platforms. The findings of this research reflect the students\' feelings, useful information that could lead to the development and implementation of pedagogical strategies that allow improving the students\' academic performance results.
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  • 文章类型: Journal Article
    疫苗犹豫是一个重要的公共卫生问题,涉及对疫苗接种安全性和有效性的担忧。在一个框架内,这项研究旨在评估文化适应,有效性,和希腊版本的成人疫苗犹豫量表(aVHS)的可靠性,以及在希腊中部的大量区域人口中确定疫苗犹豫的决定因素。进行了一项横断面研究,招募了2022年10月至12月在氧化镁地区的卫生中心和当地卫生单位接受过初级保健服务的300名成年人。使用aVHS和修订的生活取向测试(LOT-R)来确定疫苗的犹豫和乐观的倾向水平,分别。对于调查翻译,遵循向前和向后翻译的程序。此外,aVHS在一项包含18名应答者的样本的初步研究中进行了测试.通过探索性和验证性因子分析和Cronbachα系数调查了结构效度和内部一致性信度,分别。使用简单和多元线性回归分析来确定疫苗犹豫的预测因子。因素分析表明,aVHS包含两个结构(“缺乏信心”和“风险感知”),解释了总方差的68.9%。总量表的Cronbachα为0.884,表明其内部一致性很高。住在农村地区的参与者,年收入较低,和报告的乐观程度较低,表明对疫苗接种缺乏信心。另一方面,45岁以上高中毕业或小学毕业并失业的人对副作用的风险表现出更大的厌恶。最后,某些社会人口学特征与疫苗接种犹豫相关.我们的数据表明,aVHS是衡量希腊社会与疫苗相关的态度和看法的有效和可靠的工具,为在社区中设计与疫苗接种相关的预防性干预措施提供有意义的见解。
    Vaccine hesitancy is an important public health issue referring to concerns about the safety and efficacy of vaccination. Within a framework, this study aimed to assess the cultural adaptation, validity, and reliability of the Greek version of the adult Vaccine Hesitancy Scale (aVHS) as well as to identify the determinants of vaccine hesitancy among a large regional population in central Greece. A cross-sectional study was conducted enrolling 300 adults who had received primary healthcare services in the Health Centers and Local Health Units of the Magnesia Region from October to December 2022. The aVHS and the Life Orientation Test-Revised (LOT-R) were used to identify vaccine hesitancy and the dispositional level of optimism, respectively. For survey translation, the procedure of forward and backward translation was followed. Also, the aVHS was tested in a pilot study with a sample of 18 responders. Construct validity and internal consistency reliability were investigated via exploratory and confirmatory factor analysis and Cronbach\'s alpha coefficients, respectively. Simple and multiple linear regression analysis were used to determine predictors for vaccine hesitancy. Factor analyses indicated that the aVHS comprises two constructs (\"lack of confidence\" and \"risk perception\") explaining 68.9% of the total variance. The Cronbach\'s alpha of the total scale was 0.884, indicating its high internal consistency. Participants who lived in rural areas, had a lower annual income, and reported a lower level of optimism showed a higher lack of confidence in vaccination. On the other hand, people aged above 45 years old who had graduated from high school or elementary school and were unemployed showed greater aversion to the risks of side effects. Finally, certain socio-demographic characteristics were associated with vaccine hesitancy. Our data suggest that the aVHS is a valid and reliable instrument for measuring vaccine-related attitudes and perceptions in Greek society, providing meaningful insight into designing vaccination-related preventive interventions in the community.
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  • 文章类型: Journal Article
    目的:本研究旨在开发文化适应的中文版基于价值的污名量表(VASI),并评估其心理测量特性,包括信度和效度,在一般中国人口中。
    方法:本研究为横断面研究。采用便利抽样方式,从沈阳市招募普通市民708人,辽宁省,中国。VASI的内部一致性,半分割可靠性,测试重测信度,以评估翻译量表的信度。进行了几次有效性测试,包括专家咨询,探索性因素分析,和验证性因素分析。使用SPSS25.0(IBMCorp.,Armonk,NY,美国)和AMOS23.0(IBMCorp.,Armonk,NY,美国)。
    结果:中文版的VASI显示出良好的可靠性,Cronbach的α值为0.808,尺寸范围为0.812至0.850。重测信度表现出良好的时间稳定性,值为0.855,分半信度值为0.845,表明高度的一致性。该量表还显示出良好的内容效度,内容效度指数为0.952。在进行探索性因素分析后,确定了一个五因素结构,包括自我实现的因素,个人致富,声誉,精英价值观,和安全。在验证性因素分析中,所有推荐的配合指标均在可接受范围内,其中χ2/DF=1.338,GFI=0.960,AGFI=0.940,RMSEA=0.031,TLI=0.985,CFI=0.989,FI=0.989,PGFI=0.640,PNFI=0.729。
    结论:VASI的中文版在中国公众中有效可靠。五因素结构化量表有效评估了公众对精神疾病的污名,包括与个人污名相关的价值取向。鉴于公众对精神疾病的严重和广泛的污名,问卷的结果可能为未来公共卫生教育计划的发展提供信息。需要进行公共卫生教育以减少精神疾病的污名,提高公众对心理健康问题的认识,减轻对精神疾病的持续污名化。
    OBJECTIVE: This study aimed to develop a culturally adapted Chinese version of the Value-based Stigma Inventory (VASI) and to evaluate its psychometric properties, including reliability and validity, among the general Chinese population.
    METHODS: This study is a cross-sectional study. Convenience sampling was used to recruit 708 general citizens from Shenyang City, Liaoning Province, China. The VASI\'s internal consistency, split-half reliability, and test-retest reliability were tested to assess the translated scale\'s reliability. Several validity tests were performed, including expert consultation, exploratory factor analysis, and confirmatory factor analysis. Data were analyzed using SPSS 25.0 (IBM Corp., Armonk, NY, United States) and AMOS 23.0 (IBM Corp., Armonk, NY, United States).
    RESULTS: The Chinese version of the VASI showed good reliability, with a Cronbach\'s α value of 0.808, and the dimensions ranged from 0.812 to 0.850. Test-retest reliability showed good temporal stability with a value of 0.855, and the split-half reliability value was 0.845, indicating a high degree of consistency. The scale also demonstrated good content validity with a content validity index of 0.952. After conducting exploratory factor analysis, a five-factor structure was identified, including factors of self-realization, personal enrichment, reputation, meritocratic values, and security. In the confirmatory factor analysis, all recommended fit indicators were found to be within the acceptable range, including χ2/DF = 1.338, GFI = 0.960, AGFI = 0.940, RMSEA = 0.031, TLI = 0.985, CFI = 0.989, IFI = 0.989, PGFI = 0.640, and PNFI = 0.729.
    CONCLUSIONS: The Chinese version of the VASI is valid and reliable among the Chinese general public. The five-factor structured scale effectively assessed public stigma against mental illness, including the value orientations associated with personal stigma. Given the harsh and widespread public stigma against mental illness, the findings from the questionnaire may inform the development of future public health education programs. Public health education is needed to reduce the stigma of mental illness, increase public awareness of mental health issues, and mitigate the continued stigmatization of mental illness.
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  • 文章类型: Journal Article
    最近的COVID-19大流行导致了经济和生活方式的急剧变化,显著改变剩余电力需求行为。这一变化扩大了基于大流行前数据的实际用电量和预测用电量之间的需求差距,强调一个关键的全球问题。大流行的许多研究都探讨了这种差距不断扩大的特征,这受到重大社会事件的影响,如病毒快速传播和封锁。然而,经济转变和生活方式改变等因素对这一需求的影响在很大程度上仍未被探索,主要是由于大流行对这些地区的重大影响。了解影响需求差距的基本因素对于电力部门的利益相关者制定有效的战略至关重要。本研究考察了指定时间段内的小时用电量和相关因素。我们提出了一种结合时间序列预测和稀疏建模的方法。这有助于确定大流行期间影响电力需求缺口的关键因素,突出最关键的变量。利用这种方法,我们确定在大流行期间发生重大变化的变量,并评估其对电力需求缺口的影响。通过将其应用于以德语收集的数据集来证明有效性。
    The recent COVID-19 pandemic has precipitated drastic changes in economic and lifestyle conditions, significantly altering residual electricity demand behavior. This alteration has expanded the demand gap between actual and forecasted electricity usage based on pre-pandemic data, highlighting a critical global issue. Many studies in the pandemic have explored the features of this widening gap, which is impacted by major social events like fast virus spread and lockdowns. However, the influence of factors like economic shifts and lifestyle changes on this demand remains largely unexplored, primarily due to the pandemic\'s significant effects in these areas. Understanding the essential factors affecting the demand gap is crucial for stakeholders in the electricity sector to develop effective strategies. This study examines the hourly electricity consumption and related factors during the specified period. We present a method combining time-series forecasting and sparse modeling. This helps identify critical factors affecting the electricity demand gap during the pandemic, highlighting the most crucial variables. Utilizing this method, we identify the variables that have undergone significant changes during the pandemic and evaluate their effects on the electricity demand gap. The effectiveness is proven by applying it to the dataset collected in German.
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  • 文章类型: Journal Article
    文献中的患者满意度问卷是根据作者国家/地区的社区药房服务进行的,并非所有人都有心理测量报告来支持结果。我们设计了针对罗马尼亚社区药房服务的问卷,以评估患者满意度。
    我们对自愿患者进行了一项横断面研究。问卷由22个项目组成,分为三个领域,对应于患者对药房的满意度,制药人员和药物供应,以及与制药人员技能相关的四个子领域。使用5点Likert量表。统计分析采用SPSS27.0。
    克朗巴赫的阿尔法为0.861。评估者间协议为72.0%,项目内容有效性为97.6%,完整性指数为100%。因子分析显示6个因素(特征值>1.0)。809例患者的总体满意度评分中位数为3.77分;关于制药人员技能的满意度评分中位数为4.0分。受访者特征不同患者的满意度水平(p≤0.05)。
    已经证明了问卷的信度和效度。患者对社区药房服务的总体满意度处于中等水平,但是对药剂师的态度和信心有很高的满意度。
    UNASSIGNED: The patient satisfaction questionnaires in literature are according to the community pharmacies services in the authors\' countries and not all have psychometric reports to support the results. We designed a questionnaire specific to the services of community pharmacies in Romania to evaluate the level of patient satisfaction.
    UNASSIGNED: We carried out a cross-sectional study on voluntary patients. The questionnaire consisted of 22 items, grouped into three domains corresponding to patient satisfaction with pharmacies, pharmaceutical staff and medication availability, and four subdomains related to pharmaceutical staff skills. The 5-point Likert scale was used. Statistical analysis was done in SPSS 27.0.
    UNASSIGNED: The Cronbach\'s Alpha was 0.861. The Inter-rater Agreement was 72.0%, the Item Content Validity was 97.6% and the completeness index was 100%. The factor analysis indicated 6 factors (Eigen values >1.0). The 809 patients had a median of overall satisfaction score of 3.77; the median was 4.0 regarding satisfaction score with pharmaceutical staff skills. Respondents characteristics varied the patient\'s satisfaction level (p ≤ 0.05).
    UNASSIGNED: The reliability and validity of the questionnaire have been demonstrated. Overall patient satisfaction with community pharmacy services had a moderate level, but the attitude and confidence in the pharmacist had a high level of satisfaction.
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  • 文章类型: Journal Article
    背景:牙科学校的主要责任是设计课程,以增强学生对正畸病例分析的信心和知识。本研究旨在比较本科生在正畸病例筛查中的信心水平和表现,由教师以讲座为基础的形式主持,反对他们一年后对相同案例的自我分析,使用基于案例的翻转学习方法。
    方法:这项研究涉及100名五年级学生。同一组通过以讲师为中心的方式接受了博士前正畸训练,第五年的说教方法和基于案例的方法,以学生为中心,在他们的第六年翻转课堂方法。在每个学期结束时,学生完成了正畸病例分析和自我反思调查。
    结果:这项研究发现,两种研究方法对正畸发现的诊断能力没有显着差异。然而,自我评估调查数据显示,学生的信心水平有所提高。这特别是在进行独立的正畸病例诊断方面,与正畸专家有效沟通,以及他们在翻转教室方法后接近正畸病例时的舒适度。尽管对病例诊断的信心增加,结果显示,最后一年的学生不确定制定初步治疗计划和在早期转诊病例。
    结论:尽管在另一学期以学生为中心的学习后,学生的正畸诊断能力没有改善,他们诊断正畸病例的信心明显增强。
    BACKGROUND: Dental schools have a primary responsibility to devise a curriculum that enhances students\' confidence and knowledge in orthodontic case analysis. This study aims to compare the confidence levels and performance of undergraduate students in orthodontic case screening, moderated by faculty in a lecture-based format against their self-analysis of the same cases 1 year later, using a case-based and flipped learning approach.
    METHODS: This study involved 100 fifth-year students. The same group received predoctoral orthodontics training through an instructor-centered, didactic approach in their fifth year and a case-based, student-centered, flipped classroom approach in their sixth year. At the end of each semester, the students completed an orthodontic case analysis and a self-reflection survey.
    RESULTS: This study found no significant differences in diagnostic capabilities for orthodontic findings between the two methods studied. However, the self-evaluation survey data revealed an increase in students\' confidence levels. This was specifically in terms of carrying out independent orthodontic case diagnosis, effectively communicating with orthodontic specialists, and their comfort in approaching orthodontic cases following the flipped classroom approach. Despite increased confidence in case diagnosis, the results showed that final-year students are uncertain about creating initial treatment plans and referring cases at an early stage.
    CONCLUSIONS: Despite no observed improvement in students\' orthodontic diagnostic abilities after another semester of student-centered learning, their confidence in diagnosing orthodontic cases was notably enhanced.
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  • 文章类型: Journal Article
    对食物的奖励反应被认为在高度可口的食物过度消费中起着重要作用。在动物模型中,食物奖励响应可以解耦为独特的“喜欢”(在当下享受)和“想要”(动机/渴望)组件。然而,关于喜欢和想要的研究受到了关于喜欢和想要是否可以在人类中可靠分离的不确定性的阻碍。我们使用因子分析来测试是否可以在连续49天评估的女性中经验上区分喜欢和想要的等级。密歇根州立大学双胞胎登记处的女性参与者(N=688;年龄15-30岁)报告说,他们喜欢和想要当天食用的食物,想要当天没有食用的食物,分别用于甜食(例如,cookies),快餐(例如,薯条),碳水化合物(例如,面包),和整个食物(水果,普通鸡肉)连续49天每天晚上。我们检查了49天期间的平均水平和每日喜欢/想要的水平,这些水平捕捉到了随着时间的推移喜欢/想要的个体差异。在这两种类型的分析中,喜欢和想要吃的食物形成了一个单一的因素,而不是单独的,可分离的因素,而想要不吃的食物形成了一个独立的因素。在日常水平上,每个食物类别都出现了一个喜欢/想要的因素(例如,喜欢/想要甜食),而在平均分析中,出现了一个在所有食物类型中崩溃的单一因素(即,喜欢/想要所有食物)。结果表明,个体很难区分他们当天吃过的食物的喜好和渴望,但可能能够更可靠地区分他们没有食用的食物。
    Reward responses to food are thought to play an important role in highly palatable food overconsumption. In animal models, food reward responses can be decoupled into unique \"liking\" (in the moment enjoyment) and \"wanting\" (motivation/craving) components. However, research on liking and wanting has been hampered by uncertainty regarding whether liking and wanting can be reliably separated in humans. We used factor analysis to test whether ratings of liking and wanting could be empirically separated in women assessed across 49 consecutive days. Female participants (N = 688; ages 15-30) from the Michigan State University Twin Registry reported liking and wanting of foods consumed that day, and wanting of foods not consumed that day, separately for sweets (e.g., cookies), fast food (e.g., French fries), carbohydrates (e.g., bread), and whole foods (fruit, plain chicken) each evening for 49 consecutive days. We examined both average levels and daily levels of liking/wanting across the 49-day period that captured individual differences in liking/wanting over time. Across both types of analyses, liking and wanting for foods that were eaten formed a single factor rather than separate, dissociable factors, while wanting of foods not eaten formed an independent factor. At the daily level, a liking/wanting factor emerged for each individual food category (e.g., liking/wanting sweets), whereas in average analyses, a single factor emerged that collapsed across all food types (i.e., liking/wanting of all foods). Results suggest individuals have difficulty distinguishing between liking and wanting of foods they have eaten on that day but may be able to more reliably separate wanting of foods they have not consumed.
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  • 文章类型: Journal Article
    在全球许多地区,昆虫已经被消耗了远古时代。然而,在其他方面,传统上不会被吃掉。因为它们是更可持续的动物蛋白来源,并提供有价值的营养素以及对人体有益的生物活性化合物,他们的消费受到鼓励。知识可以作为更好地接受昆虫作为食物的工具。在这种情况下,本工作调查了有关不同国家食用昆虫的营养价值和健康影响的知识。数据是通过将问卷调查翻译成所有参与国的不同语言来收集的,并使用统计工具进行处理。总共获得7222个响应。结果表明,对于许多问题,参与者表现出中立的意见(既不同意也不反对),但是表现出同意/不同意的参与者通常情况良好。他们还能够识别不真实的事实,并通过不同意做出相应的回答。因子分析显示四组问题:营养价值,负面看法和风险,昆虫和污染和有害成分的安全性和益处。最后,根据社会人口统计学变量研究观察到显著差异(性别,年龄,教育,生活环境和国家),年龄和国家是对知识影响最大的社会人口因素。因此,增加知识被认为是增强对可食用昆虫作为营养食品的认识的重要因素,与牛肉或猪肉相比,除了成为更可持续的动物蛋白质来源外,还能带来健康益处。
    Insects have been consumed for time immemorial in many regions of the globe. However, in other parts, they are not traditionally eaten. Because they are a more sustainable source of animal protein and provide valuable nutrients as well as bioactive compounds with beneficial effects on the human body, their consumption is encouraged. Knowledge can serve as a tool for better acceptance of insects as food. In this context, the present work investigated the knowledge about the nutritional value and health effects of edible insects in different countries. Data were collected by employing a questionnaire survey translated into the different languages of all participating countries and were treated using statistical tools. A total of 7222 responses were obtained. The results indicated that for many issues, the participants manifested a neutral opinion (neither agree nor disagree), but the participants who manifested agreement/disagreement were generally well informed. They were also able to identify untrue facts and answer accordingly by disagreeing. Factor analysis showed four groups of questions: nutritive value, negative perception and risks, safety and benefits of insects and contamination and harmful components. Finally, significant differences were observed according to the sociodemographic variables studies (sex, age, education, living environment and country), with age and country being the most influential of the sociodemographic factors on knowledge. Therefore, increasing knowledge is envisaged as an essential factor in augmenting the recognition of edible insects as a nutritional food, presenting health benefits apart from being a more sustainable source of animal protein when compared with beef or pork meats.
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  • 文章类型: Journal Article
    背景:发热是儿童呼吸系统疾病最常见的临床症状之一。一旦孩子发烧,父母和照顾者主要担心孩子可能有高热惊厥。认知能力的缺乏不仅会导致患儿焦虑,而且会加重或延误患儿的就医时间,严重影响患儿的预后。因此,有必要澄清对高热惊厥相关知识的掌握程度,实施有针对性的指导和健康教育,并确保父母和照顾者得到正确和合理的急救治疗。本研究的目的是将父母/照顾者的高热惊厥知识量表翻译成中文,并验证其对中国父母和儿童照顾者的信度和效度。
    方法:使用Brislin传统翻译模型将父母/照顾者的高热惊厥知识量表从英文翻译成中文,以下授权的原始作者的规模。这涉及到直译,回译,文化适应。方法采用方便抽样的方法,在辽宁省某三级医院儿科病房和儿科输液门诊抽取402名患儿家长和看护人。采用项目分析方法评估项目差异,采用德尔菲法进行内容效度分析。通过内部一致性和重测信度的计算来评估量表的信度。进行探索性和验证性因素分析,以探索和验证潜在因素结构和量表效度。
    结果:父母/照顾者高热惊厥知识量表中文版由3个维度和8个项目组成。Cronbach的α系数为0.828,每个维度的系数为0.806、0.720和0.702。分半信度和重测信度分别为0.716和0.790。中文版具有良好的可靠性。探索性因子分析显示,Bartlett球形度检验为394.52(p<0.001),KMO值为0.802>0.600,表明适合进行因子分析。对数据进行主成分分析和最大方差正交旋转,并选择单因素内负荷大于0.40的项目纳入。得到的三因素结构解释了总方差的70.78%。所有模型拟合指数均在可接受范围内,说明中文版具有良好的结构效度。探索性和验证性因素分析的结果都支持这一结论。
    结论:中文版父母/照顾者惊厥知识量表具有良好的信度和效度。可作为临床儿科护士评估高热惊厥患儿家长和照顾者知识水平的工具,为根据中文量表得出的结果设计和实施有针对性的培训计划提供依据。
    BACKGROUND: Fever is one of the most common clinical symptoms of respiratory diseases in children. Once the child has a fever, parents and caregivers are mainly concerned that the child may have a febrile convulsion. A lack of cognitive ability not only leads to anxiety but also aggravates or delays the time of children\'s medical treatment and even seriously affects the prognosis because of improper management of fever patients.Therefore, it is necessary to clarify the degree of mastery of knowledge related to febrile convulsions, implement targeted guidance and health education, and ensure that parents and caregivers receive correct and reasonable first aid treatment. The purpose of this study was to translate the Febrile Convulsion Knowledge Scale for Parents/Caregivers into Chinese and to verify its reliability and validity for Chinese parents and caregivers of children.
    METHODS: The Brislin traditional translation model was used to translate the Febrile Convulsion Knowledge Scale for Parents/Caregivers from English to Chinese, following authorization from the original author of the scale. This involved literal translation, back translation, and cultural adaptation. A convenience sampling method was used to select 402 parents and caregivers of children in the pediatric ward and pediatric infusion clinic of a Grade III hospital in Liaoning Province. The item analysis method was employed to assess item differentiation, while the Delphi method was used to analyze content validity. Scale reliability was evaluated through the calculation of internal consistency and test-retest reliability. Exploratory and confirmatory factor analyses were conducted to explore and verify the underlying factor structure and scale validity.
    RESULTS: The Chinese version of the Febrile Convulsion Knowledge Scale for Parents/Caregivers consists of 3 dimensions and 8 items. The Cronbach\'s alpha coefficient was 0.828, with each dimension having coefficients of 0.806, 0.720, and 0.702. The split-half reliability and test-retest reliability were 0.716 and 0.790, respectively. The Chinese version has good reliability. Exploratory factor analysis revealed that the Bartlett sphericity test was 394.52 (p < 0.001) and that the KMO value was 0.802 > 0.600, indicating suitability for factor analysis. Principal component analysis and orthogonal rotation of maximum variance were performed on the data, and items with a load greater than 0.40 within a single factor were selected for inclusion. The resulting three-factor structure explained 70.78% of the total variance. All model fitting indices were within the acceptable range, indicating the good structural validity of the Chinese version. The results of both exploratory and confirmatory factor analyses support this conclusion.
    CONCLUSIONS: The Chinese version of the Febrile Convulsion Knowledge Scale for Parents/Caregivers has good reliability and validity. It can be used as a tool for clinical pediatric nurses to evaluate the knowledge of parents and caregivers of children with febrile convulsion and provide the basis for the design and implementation of targeted training plans according to the results obtained from the Chinese scale.
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  • 文章类型: Journal Article
    目的:这项研究的目的是检验经验得出的膳食模式评分与认知之间的关联,以及认知能力下降的风险,老年男性平均4.6(±0.3)年以上。
    方法:本分析是男性骨质疏松性骨折(MrOS)前瞻性队列研究的一部分。饮食在第1次访视(3/2000-4/2002)通过食物频率问卷进行评估,并通过因子分析得出膳食模式(西方和审慎)。分析队列包括4231名65岁或以上的社区居住的美国男性。在第1次访视和第2次访视(3/2005-5/2006)时,使用改良迷你精神状态检查(3MS)和跟踪B测试评估认知功能。使用混合效应回归模型估计膳食模式评分与认知和认知下降风险之间的关联。模型1根据年龄进行了调整,临床地点和总能量摄入(TEI)。模型2进一步调整钙和维生素D补充剂的使用,体重指数(BMI),身体活动,吸烟,糖尿病和高血压(西方饮食组)和教育,钙和维生素D补充剂的使用,抑郁症,BMI,身体活动,吸烟和中风(谨慎饮食组)。
    结果:在模型2中,遵循西方饮食模式与更高的3MS评分和更短的TrailsB测试时间相关。在模型1中,坚持审慎饮食模式与较高的3MS评分相关,而不是模型2。在第2次访问4.6(±0.3)年后,饮食模式评分与认知下降风险之间没有独立关联。
    结论:结果并不支持谨慎饮食模式对MrOS队列认知的强大保护作用。应谨慎解释西方饮食模式与更好的认知得分之间的关联。需要进一步的研究来了解老年男性的饮食模式和认知之间的复杂相互作用。
    OBJECTIVE: The aim of this study was to examine associations between empirically derived dietary pattern scores and cognition, as well as risk of cognitive decline, over an average of 4.6 (± 0.3) years in older men.
    METHODS: This analysis was conducted as part of the Osteoporotic Fractures in Men (MrOS) prospective cohort study. Diet was assessed at Visit 1 (3/2000-4/2002) by food frequency questionnaire, and dietary patterns (Western and Prudent) were derived by factor analysis. The analytic cohort comprised 4231 community-dwelling American men who were aged 65 years or more. Cognitive function was assessed with the Modified Mini-Mental State exam (3MS) and the Trails B test at Visit 1 and at Visit 2 (3/2005-5/2006). Associations between dietary pattern score and cognition and risk of cognitive decline were estimated using mixed effects regression models. Model 1 was adjusted for age, clinic site and total energy intake (TEI). Model 2 was further adjusted for calcium and vitamin D supplement use, body mass index (BMI), physical activity, smoking, diabetes and hypertension (Western diet group) and education, calcium and vitamin D supplement use, depression, BMI, physical activity, smoking and stroke (Prudent diet group).
    RESULTS: Adherence to the Western dietary pattern was associated with higher 3MS scores and shorter Trails B test time at Visit 1 in Model 2. Adherence to the Prudent dietary pattern was associated with higher 3MS scores in Model 1 but not Model 2. There were no independent associations between dietary pattern scores and risk of cognitive decline 4.6 (± 0.3) years later at Visit 2.
    CONCLUSIONS: The results do not support a robust protective effect of the Prudent dietary pattern on cognition in the MrOS cohort. Associations between the Western dietary pattern and better cognitive scores should be interpreted with caution. Further research is needed to understand the complex interactions between dietary patterns and cognition in older men.
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