Confounding factor

混杂因子
  • 文章类型: Journal Article
    背景:护士做出有效临床决策的能力是可以影响治疗质量的最重要因素。然而,几个因素会影响护理和助产专业学生做出有效临床决策的能力。
    目的:本研究旨在确定约旦COVID-19大流行后可能影响护士临床决策以及患者预后的混杂因素。
    方法:本研究采用描述性横断面设计。通过目的性抽样,向269名护理和助产专业学生分发了在线自我管理问卷,其中224人完成了调查问卷。有效可靠的护理决策工具,由24个项目组成,被用来收集数据,并采用描述性统计和简单线性回归进行数据分析。数据收集自2022年11月至12月底。
    结果:在受访者中,72.8%为女性,平均年龄为20.79岁(SD=1.44)。绝大多数受访者(94.6%)未婚,74.1%攻读护理学位。简单线性回归分析显示,临床决策与平均每天6h的社交媒体使用呈负相关(β=-0.085)。此外,与女护生相比,男护生的临床决策得分较低(β=-0.408)。
    结论:社交媒体使用和性别对护理和助产专业学生的临床决策有相当大的影响。因此,影响护士临床决策的混杂因素,应实施解决这些因素的战略。
    BACKGROUND: The ability of a nurse to make effective clinical decisions is the most important factor that can affect the treatment quality. However, several factors can affect the ability of nursing and midwifery students to make effective clinical decisions.
    OBJECTIVE: This study aims to identify the confounding factors that may affect the clinical decision making of nurses and thus patient outcomes after the COVID-19 pandemic in Jordan.
    METHODS: A descriptive cross-sectional design was employed in this study. An online self-administered questionnaire was distributed to 269 nursing and midwifery students selected through purposive sampling, 224 of whom completed the questionnaire. The valid and reliable nursing decision-making instrument, which consisted of 24 items, was employed to gather the data, and descriptive statistics and simple linear regression were employed for the data analysis. Data was collected from November to the end of December 2022.
    RESULTS: Among the respondents, 72.8% were female, and the average age was 20.79 years (SD = 1.44). The vast majority of the respondents (94.6%) was unmarried, and 74.1% were pursuing a nursing degree. The simple linear regression analysis showed that clinical decision making had a negative and significant relationship with social media usage of an average of 6 h a day (β=-0.085). Moreover, the male nursing students obtained lower clinical decision-making scores (β= -0.408) compared with the female nursing students.
    CONCLUSIONS: Social media usage and gender have a considerable effect on the clinical decision making of the nursing and midwifery students. Therefore, the confounding factors that can affect the clinical decision making of nurses should be discussed further, and strategies to address such factors should be implemented.
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  • 文章类型: Letter
    暂无摘要。
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  • 文章类型: Journal Article
    食管肿瘤的发生、发展与激素变化密切相关。这项研究的目的是从遗传角度研究初潮年龄(AAMA)或绝经年龄(AAMO)与良性食道癌(BON)或恶性食道癌(MON)之间的因果关系。
    从IEUOpenGWAS数据库获得暴露(AAMA和AAMO)和结果(BON和MON)的全基因组关联研究(GWAS)汇总数据。我们在他们之间进行了双样本孟德尔随机化(MR)研究。采用逆方差加权(IVW)作为主要分析方法,而Egger先生,加权中位数,简单模式,加权模式是补充方法。最大可能性,惩罚加权中位数,和IVW(固定效应)是验证方法。我们使用Cochran的Q统计量和Rucker的Q统计量来检测异质性。MREgger的截距测试和MR多效性残差和异常值的全局测试(MR-PRESSO)用于检测水平多效性,MR-PRESSO分析的畸变检验用于检测异常值。留一法分析用于检测MR分析是否受单核苷酸多态性(SNP)的影响。此外,使用MR稳健调整轮廓评分(MR-RAPS)方法评估MR分析的稳健性.
    随机效应IVW结果表明,AAMA与BON具有负遗传因果关系(比值比[OR]=0.285[95%置信区间[CI]:0.130-0.523],P=0.002)。加权中位数,最大似然,惩罚加权中位数,和IVW(固定效应)与随机效应IVW一致(P<0.05)。Egger先生,简单模式和加权模式结果显示AAMA与BON无遗传因果关系(P>0.05)。然而,AAMA与MON之间没有因果关系(OR=1.132[95CI:0.621-2.063],P=0.685),AAMO和BON(OR=0.989[95CI:0.755-1.296],P=0.935),或AAMO和MON(OR=1.129[95CI:0.938-1.359],P=0.200)。Egger先生,加权中位数,简单模式,加权模式,最大似然,惩罚加权中位数,和IVW(固定效应)与随机效应IVW一致(P>0.05)。MR分析结果显示无异质性,水平多效性和异常值(P>0.05)。他们不是由一个SNP驱动的,呈正态分布(P>0.05)。
    只有AAMA与BON具有负的遗传因果关系,AAMA和MON之间不存在遗传因果关系,AAMO和BON,或者AAMO和MON.然而,不能排除它们在遗传学之外的其他层面有关联。
    The occurrence and development of oesophageal neoplasia (ON) is closely related to hormone changes. The aim of this study was to investigate the causal relationships between age at menarche (AAMA) or age at menopause (AAMO) and benign oesophageal neoplasia (BON) or malignant oesophageal neoplasia (MON) from a genetic perspective.
    Genome-wide association study (GWAS) summary data of exposures (AAMA and AAMO) and outcomes (BON and MON) were obtained from the IEU OpenGWAS database. We performed a two-sample Mendelian randomization (MR) study between them. The inverse variance weighted (IVW) was used as the main analysis method, while the MR Egger, weighted median, simple mode, and weighted mode were supplementary methods. The maximum likelihood, penalized weighted median, and IVW (fixed effects) were validation methods. We used Cochran\'s Q statistic and Rucker\'s Q statistic to detect heterogeneity. The intercept test of the MR Egger and global test of MR pleiotropy residual sum and outlier (MR-PRESSO) were used to detect horizontal pleiotropy, and the distortion test of the MR-PRESSO analysis was used to detect outliers. The leave-one-out analysis was used to detect whether the MR analysis was affected by single nucleotide polymorphisms (SNPs). In addition, the MR robust adjusted profile score (MR-RAPS) method was used to assess the robustness of MR analysis.
    The random-effects IVW results showed that AAMA had a negative genetic causal relationship with BON (odds ratio [OR] = 0.285 [95% confidence interval [CI]: 0.130-0.623], P = 0.002). The weighted median, maximum likelihood, penalized weighted median, and IVW (fixed effects) were consistent with random-effects IVW (P < 0.05). The MR Egger, simple mode and weighted mode results showed that AAMA had no genetic causal relationship with BON (P > 0.05). However, there were no causal genetic relationships between AAMA and MON (OR = 1.132 [95%CI: 0.621-2.063], P = 0.685), AAMO and BON (OR = 0.989 [95%CI: 0.755-1.296], P = 0.935), or AAMO and MON (OR = 1.129 [95%CI: 0.938-1.359], P = 0.200). The MR Egger, weighted median, simple mode, weighted mode, maximum likelihood, penalized weighted median, and IVW (fixed effects) were consistent with a random-effects IVW (P > 0.05). MR analysis results showed no heterogeneity, the horizontal pleiotropy and outliers (P > 0.05). They were not driven by a single SNP, and were normally distributed (P > 0.05).
    Only AAMA has a negative genetic causal relationship with BON, and no genetic causal relationships exist between AAMA and MON, AAMO and BON, or AAMO and MON. However, it cannot be ruled out that they are related at other levels besides genetics.
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  • 文章类型: Journal Article
    The association between cadmium levels in the body and diabetes has been extensively studied, with sometimes contrasting results. Smoking is the primary non-occupational source of cadmium, and constitutes a risk factor for diabetes. One can therefore hypothesize that the putative association with cadmium is actually explained by tobacco. To fully control for this confounding factor, we studied the relationship between blood cadmium and glycated haemoglobin (HbA1c) levels separately in never-, former and current smokers.
    We studied a sample of 2749 middle-aged adults from the cross-sectional ELISABET survey in and around the cities of Lille and Dunkirk; none had chronic kidney disease or a history of haematological disorders, and none were taking antidiabetic medication. The blood cadmium level-HbA1c associations in never-, former and current smokers were studied in separate multivariate models. The covariables included age, sex, city, educational level, tobacco consumption (or passive smoking, for the never-smokers), body mass index, estimated glomerular filtration rate, and (to take account of the within-batch effect) the cadmium batch number.
    In the multivariate analysis, a significant association between cadmium and HbA1c levels was found in all three smoking status subgroups. A 0.1 μg/L increment in blood cadmium was associated with an HbA1c increase [95% confidence interval] of 0.016% [0.003; 0.029] among never-smokers, 0.024% [0.010; 0.037] among former smokers, and 0.020% [0.012; 0.029] among current smokers.
    The observation of a significant association between the blood cadmium concentration and HbA1c levels in a group of never-smokers strengthens the hypothesis whereby diabetes is associated with cadmium per se and not solely with tobacco use. The small effect size observed in our population of never smokers with low levels of exposure to cadmium suggested that the risk attributable to this metal is not high. However, the impact of exposure to high cadmium levels (such as occupational exposure) on the risk of diabetes might be of concern.
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