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基于机器学习构建强直性脊柱炎患者使用生物制剂不依从性临床预测模型
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作者 蔡旭 肖剑伟 +4 位作者 郭粉莲 程钒钒 胡鑫玉 许楚花 陈泽建 《广东医学》 CAS 2023年第11期1321-1327,共7页
目的 开发强直性脊柱炎(AS)生物制剂使用不依从性临床预测模型。方法 收集2020年1月至2022年10月门诊及住院确诊AS患者共201例(共收集病例220例,脱落19例),以6个月后治疗覆盖时间比例作为不依从性判定标准。基于LASSO回归及支持向量机... 目的 开发强直性脊柱炎(AS)生物制剂使用不依从性临床预测模型。方法 收集2020年1月至2022年10月门诊及住院确诊AS患者共201例(共收集病例220例,脱落19例),以6个月后治疗覆盖时间比例作为不依从性判定标准。基于LASSO回归及支持向量机筛选特征变量因子并取交集。使用多变量logistic回归分析构建不依从性临床预测模型。通过C指数、受试者工作特征(ROC)曲线、校准图和临床决策曲线评估预测模型的预测能力及临床实用性。通过Adaboost算法及Lightgbm算法对构建的二分类模型进行验证,绘制ROC曲线及PR曲线验证模型预测能力。通过内部抽样构建验证集并使用C指数、校正曲线、ROC曲线进行验证。结果 研究显示AS生物制剂使用不依从性为46.8%。机器学习结果取交集得到教育水平、月收入、焦虑程度、药物使用频次、疾病活动度、年龄6个特征变量作为构建预测模型的因子。该模型C指数为0.739,ROC曲线下面积为0.715。决策曲线分析表明该模型可以使约90%的患者受益。Adaboost算法显示ROC曲线下面积为0.643,PR曲线下面积为0.634;Lightgbm算法显示ROC曲线下面积为0.633,PR曲线下面积为0.676。内部验证结果显示C指数为0.755,ROC曲线下面积为0.733。结论 基于6个特征变量构建的生物制剂不依从性临床预测模型,具有较高的预测能力及实用性,有助于及早发现依从性差的AS患者。 展开更多
关键词 强直性脊柱炎 临床预测模型 机器学习 不依从性 生物制剂
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Testing the hypothesis of subtypes of nonadherence in schizophrenia and schizoaffective disorder:A prospective study
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作者 Dulcinea Vega Francisco J Acosta Pedro Saavedra 《World Journal of Psychiatry》 SCIE 2020年第11期260-271,共12页
BACKGROUND Nonadherence is a major problem in the treatment of psychotic disorders.It has been hypothesized that nonadherent patients with schizophrenia are not a homogeneous population and subtypes of nonadherence mi... BACKGROUND Nonadherence is a major problem in the treatment of psychotic disorders.It has been hypothesized that nonadherent patients with schizophrenia are not a homogeneous population and subtypes of nonadherence might exist,but this hypothesis has not been specifically tested.AIM To test the hypothesis of subtypes of nonadherence in schizophrenia and schizoaffective disorder.METHODS This prospective study included 110 consecutively admitted patients diagnosed with schizophrenia or schizoaffective disorder.Assessments were performed at baseline and at 6 mo follow-up after discharge.Sociodemographic,clinical,psychopathological and treatment-related variables were evaluated.Adherence was defined as the concurrence of adherence to antipsychotic treatment and outpatient follow-up during the six-month period.Adherence to antipsychotic treatment was defined as the concurrence of objective and subjective adherence.Sixty-four patients(58%)fulfilled nonadherence criteria at the end of the followup period and were categorized according to their subtype of nonadherence.RESULTS In nonadherent patients(n=64),32(50%)fulfilled criteria of intentional nonadherence,and 32(50%)of unintentional nonadherence(UNA).Unintentional nonadherent patients,as compared to intentional nonadherent patients,are characterized by older age,lower educational level,worse cognitive and negative symptoms,greater severity,worse knowledge of their treatment regimen,greater prevalence of supervision of the treatment,lower number of prior hospitalizations and greater use of nonpsychiatric treatment,anticholinergics and hypnotics.Low educational level(OR=26.1;95%CI:2.819-241),worse treatment knowledge at six months(OR per unit=0.904;95%CI:0.853-0.957)and nonpsychiatric treatment at six months(OR=15.8;95%CI:1.790-139)were independently associated to UNA.CONCLUSION Differentiated subtypes of nonadherence according to intentionality seem to exist in patients with schizophrenia and schizoaffective disorder.Our findings suggest the need for differentiated app 展开更多
关键词 Adherence HOSPITALIZATION PSYCHOSIS HYPOTHESIS Unintentional nonadherence Intentional nonadherence
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Minimization vs tailoring:Where do we stand with personalized immunosuppression during renal transplantation in 2015? 被引量:3
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作者 Lajos Zsom László Wagner Tibor Fül?p 《World Journal of Transplantation》 2015年第3期73-80,共8页
The introduction of novel immunosuppressive agents over the last two decades and the improvement of our diagnostic tools for early detection of antibodymediated injury offer us an opportunity, if not a mandate, to bet... The introduction of novel immunosuppressive agents over the last two decades and the improvement of our diagnostic tools for early detection of antibodymediated injury offer us an opportunity, if not a mandate, to better match the immunosuppression needs of the individual patients with side effects of the therapy. However, immunosuppressive regimens in the majority of programs remain mostly protocol-driven, with relatively little inter-program heterogeneity in certain areas of the world. Emerging data showing different outcomes with a particular immunosuppressive strategy in populations with varying immunological risks underscore a real potential for "personalized medicine" in renal transplantation. Studies demonstrating marked differences in the adverse-effect profiles of individual drugs including the risk for viral infections, malignancy and renal toxicity call for a paradigm shift away from a "one size fits all" approach to an individually tailored immunosuppressive therapy for renal transplant recipients, assisted by both screening for predictors of graft loss and paying close attention to dose or class-related adverse effects. Our paper explores some of the opportunities during the care of these patients. Potential areas of improvements may include:(1) a thorough assessment of immunological and metabolic risk profile of each renal transplant recipient;(2) screening for predictors of graft loss and early signs of antibody-mediated rejection with donor-specific antibodies, protocol biopsies and proteinuria(including close follow up of adverse effects with dose adjustments or conversions as necessary); and(3) increased awareness of the possible link between poor tolerance of a given drug at a given dose and non-adherence with the prescribed regimen. Altogether, these considerations may enable the most effective use of the drugs we already have. 展开更多
关键词 GLUCOCORTICOIDS Donor-specific antibodies Kidney transplantation Mechanistic(mammalian)target of rapamycin INHIBITOR MYCOPHENOLATE mofetil nonadherence CALCINEURIN INHIBITOR SIROLIMUS
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Patients Related Factors Associated with Non-Adherence to Antihypertensive Medication among Patients at Chuka Referral Hospital, Kenya
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作者 Charity Ngugi Gikunda Lucy Gitonga 《Open Journal of Clinical Diagnostics》 2019年第3期90-113,共24页
Antihypertensive medication is one way to manage hypertension but many hypertensive patients do not optimize drug therapy to achieve blood pressure control. Hypertensive medication non-adherence continues to become a ... Antihypertensive medication is one way to manage hypertension but many hypertensive patients do not optimize drug therapy to achieve blood pressure control. Hypertensive medication non-adherence continues to become a contributing factor to hypertensive complications like heart attacks, heart failure, stroke, kidney disease. Prevalence of non-adherence to antihypertensive treatment is not known but it’s thought to be increasing. Associated factors of non-adherence are complex, are both internal and external to the patient but are difficult to extrapolate. This can partly be because the determinants of non-adherence to hypertensive may have a locality effect due to many factors such as culture and health system in a given locality. Hence, studies from one region may not have a cross-application. Therefore, there is the need to study the factors associated with non-adherence at a local scale. Descriptive study design was adopted to guide the implementation of the study. The population comprised of 575 people among doctors, pharmacists, nurses, record officers and hypertension patients. The respondents were identified through simple random sampling and a sample size of 81 patients was achieved and 10 health care providers including doctors, pharmacists, record officers and nurses were also interviewed through census method. Data was collected between the month of April and May 2019. Questionnaires were used as data collection tools for the patients while the interview schedule was conducted to health care providers through an interview guide. Descriptive and inferential statistics were used for data analysis, aided by SPSS. The study revealed a significant negative correlation (rpb = &minus;0.227, p 0.05) between age and non-adherent, insignificant relationship with marital status (rpb = &minus;0.129), insignificant (rpb = &minus;0.064) correlation with patients’ level of education and a positive correlation with monthly income (rpb = 0.24). A majority of patients stated that (64%) of the hypertensive patients ha 展开更多
关键词 Hypertension nonadherence MEDICATION Inhibiting Factors High Blood Pressure Patients’ Characteristics
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生物制剂不依从性临床预测模型在类风湿关节炎患者中的应用 被引量:1
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作者 蔡旭 肖剑伟 +3 位作者 程钒钒 赵敏 尹志华 郭粉莲 《临床与病理杂志》 CAS 2021年第9期2125-2132,共8页
目的:开发类风湿关节炎(rheumatoid arthritis,RA)患者用药不依从性临床预测模型。方法:基于2018年1月至2019年3月102例RA患者的训练数据集开发预测模型,使用6个月治疗覆盖天数比例为终点事件进行评估,采用LASSO回归模型用于优化药物不... 目的:开发类风湿关节炎(rheumatoid arthritis,RA)患者用药不依从性临床预测模型。方法:基于2018年1月至2019年3月102例RA患者的训练数据集开发预测模型,使用6个月治疗覆盖天数比例为终点事件进行评估,采用LASSO回归模型用于优化药物不依从性风险模型的特征选择,应用多变量logistic回归分析建立包含LASSO回归模型中选择的特征的预测模型,使用C指数、校准图、ROC曲线和决策曲线分析来评估预测模型的预测能力、校准和临床实用性,并使用Bootstrap进行内部验证。结果:预测模型中的预测因素包括年龄、疾病活动度、教育水平、月收入及焦虑程度。该模型显示出良好的预测能力,C指数为0.897(95%CI:0.827~0.906),ROC曲线下面积(AUC)为0.8787939。在内部验证中,C指数可能达到0.888。决策曲线分析表明,在不损害其他患者的利益情况下,该模型的预测效果可以使得约85%的患者受益。结论:该临床预测模型有助于临床医护人员及早识别不依从性风险较高的患者,从而能够及时采取干预措施。 展开更多
关键词 类风湿关节炎 临床预测模型 不依从性 生物制剂 R软件
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Case-control study of factors that trigger inflammatory bowel disease flares 被引量:1
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作者 Linda A Feagins Ramiz Iqbal Stuart J Spechler 《World Journal of Gastroenterology》 SCIE CAS 2014年第15期4329-4334,共6页
AIM: To explore the association between inflammatory bowel diseases (IBD) flares and potential triggers.
关键词 Inflammatory bowel diseases Flare Non-adherence Crohn’ s disease Ulcerative colitis
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Factors associated with visit-to-visit variability of blood pressure in hypertensive patients at a Primary Health Care Service,Tabanan,Bali,Indonesia
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作者 Gusti Ayu Riska Pertiwi Anak Agung Ngurah Aryawangsa +4 位作者 I Putu Yuda Prabawa Ida Bagus Amertha Putra Manuaba Agha Bhargah Ni Wayan Sri Ratni I Putu Gede Budiana 《Family Medicine and Community Health》 2018年第4期191-199,共9页
Background:An increasing number of valid and well-designed trials have demonstrated a positive correlation between visit-to-visit variability(VVV)in systolic blood pressure(SBP)and increased risk of stroke and coronar... Background:An increasing number of valid and well-designed trials have demonstrated a positive correlation between visit-to-visit variability(VVV)in systolic blood pressure(SBP)and increased risk of stroke and coronary heart disease among hypertensive patients.Methods:A cross-sectional study was conducted that involved 74 patients who visited the outpatient clinic at the Tabanan III Primary Health Care Service during April to May 2017.Blood pressure was retrospectively obtained from medical records.VVV was classified as low or high on the basis of the standard deviation of SBP.Antihypertensive medication adherence was expressed as the percentage of days covered,and sodium intake was measured with 24-hour food recall.Bi-variate analysis was performed,followed by multivariate analysis for significant variables.Results:Among the participants,67.6%were female,with a mean(standard deviation[SD])age of 62.70(10.00)years.Blood pressure was measured 4.82±0.78 times during the period,and the mean(SD)SBP was 139.65(10.57)mm Hg.Nonadherence and sodium intake were signifi-cantly higher in the high-VVV group than in the low-VVV group(nonadherence 13.5%vs.37.8%,P=0.033;sodium intake 1278.44±43.02 mg vs.1495.85±45.26 mg,P=0.038).After adjustment for other covariates,the differences remained significant only for nonadherence(model I exp β=3.89[95.0%confidence interval 1.23-12.34,P<0.05],model II expβ=3.9[95.0%confidence interval 1.12-14.15,P<0.05]).The area under the curve was 0.636(P<0.05),with sensitivity of 67.6%and specificity of 51.4%.Conclusion:Nonadherence to antihypertensive medication was significantly associated with higher VVV of SBP.Further study is needed to assess whether improving adherence could reduce VVV and improve cardiovascular outcomes. 展开更多
关键词 Blood pressure visit-to-visit-variability nonadherence sodium intake hyperten-sion
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Psychotropic Medication Refusal:Reasons and Patients’Perception at a Secure Forensic Psychiatric Treatment Centre
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作者 Olajide O Adelugba Mansfield Mela Inam U Haq 《Journal of Forensic Science and Medicine》 2016年第1期12-17,共6页
Poor adherence to prescribed medication regimens can undermine the effectiveness of medications.This study was conducted to determine the demographic profile of forensic psychiatric inpatients refusing medications and... Poor adherence to prescribed medication regimens can undermine the effectiveness of medications.This study was conducted to determine the demographic profile of forensic psychiatric inpatients refusing medications and to identify the reasons for refusal.Data were collected through interviews using a questionnaire including Drug Attitude Inventory‑10.Medication refusal was more common among Aboriginals(68%,n=34)than Caucasians(32%,n=16)and was highest among the patients 21–30 years of age(44%,n=22).Antisocial personality disorder and substance use disorder featured prominently among patients refusing medications.The main reasons for medication refusal were inconvenience(34%,n=17)followed by side effects(22%,n=11),ineffective medication(20%,n=10),illness‑related(16%,n=8),and no reasons(8%,n=6).Antipsychotic medications topped the list of the major classes of medications refused followed by Antidepressants and Mood Stabilizers. 展开更多
关键词 Forensic MEDICATION nonadherence PSYCHIATRY REFUSAL
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2型糖尿病患者胰岛素治疗失依从行为的调查分析 被引量:20
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作者 杨韵歆 李星梅 关琴芳 《护理学杂志(综合版)》 CSCD 2013年第8期27-29,共3页
目的分析2型糖尿病患者胰岛素治疗中失依从行为及其影响因素,为采取相应的护理干预措施提供参考。方法采用问卷调查法和深入访谈法对180例2型糖尿病胰岛素治疗患者的失依从行为进行单因素分析。结果180例2型糖尿病患者胰岛素治疗中失依... 目的分析2型糖尿病患者胰岛素治疗中失依从行为及其影响因素,为采取相应的护理干预措施提供参考。方法采用问卷调查法和深入访谈法对180例2型糖尿病胰岛素治疗患者的失依从行为进行单因素分析。结果180例2型糖尿病患者胰岛素治疗中失依从行为发生157例,占87.2%。年龄、使用胰岛素的时间及种类、医疗费用的支付方式与失依从行为的发生有关;认知、态度、生活管理、费用与不良反应是患者认为发生失依从行为的主要原因。结论2型糖尿病患者胰岛素治疗中失依从行为发生率高,且影响因素为多方面,而采取相应的护理干预措施,以有效降低失依从行为的发生,良好控制血糖。 展开更多
关键词 2型糖尿病 胰岛素治疗 失依从行为 多因素分析 护理
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抗乙肝特异性转移因子和核糖核酸体外生物活性的实验研究Ⅱ.用白细胞粘附抑制试验测活 被引量:1
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作者 韩彩霞 宋愿智 刘应华 《中国生化药物杂志》 CAS CSCD 1998年第1期38-40,共3页
选用白细胞粘附抑制试验检测了抗乙肝特异性转移因子和核糖核酸的体外生物活性,经统计分析:两者的非粘附抑制指数和变异系数分别为74.23%和7.13%,67.45%和6.50%。与对照组相比,P>0.05,两者之间无显著性差异。
关键词 抗乙肝特异性TF RNA 非粘附抑制指数 LAI
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非贴壁法体外诱导人外周血单核细胞生成树突状细胞的研究
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作者 彭卫斌 饶珈琦 +3 位作者 沙卫红 容海鹰 聂玉强 李瑜元 《现代消化及介入诊疗》 2012年第6期317-319,共3页
目的探讨新型诱导剂钙离子载体A23187联合重组人粒细胞-巨噬细胞集落刺激因子(rhGM-CSF)通过非贴壁法体外诱导人外周血单核细胞(monocytes,Mo)生成树突状细胞(dendritic cell,DC)的可行性。方法采用密度梯度离心法分离出人外周血单个核... 目的探讨新型诱导剂钙离子载体A23187联合重组人粒细胞-巨噬细胞集落刺激因子(rhGM-CSF)通过非贴壁法体外诱导人外周血单核细胞(monocytes,Mo)生成树突状细胞(dendritic cell,DC)的可行性。方法采用密度梯度离心法分离出人外周血单个核细胞(peripheral blood mononuclearc ell,PBMC),一组通过贴壁法分离出Mo,再加入rhGM-CSF+A23187,称贴壁法组。另一组直接加入rhGM-CSF+A23187,称非贴壁法组。通过光镜观察细胞形态的变化,流式细胞仪检测DC细胞的表面标志。结果两组诱导培养的DCs都具有典型的树突形态;与贴壁法比较,DC表面分子CD14-CD83+(39.2%vs40.9%)、CD14-CD1a+(19.6%vs18.3%)、CD14-CD86+(47.1%vs46.0%)、CD14-CD40+(30.5%vs32.8%)的表达无明显差异,P值均大于0.05。结论新型诱导剂钙离子载体A23187联合rhGM-CSF通过非贴壁法能有效地诱导Mo生成成熟的DCs。 展开更多
关键词 钙离子载体 非贴壁法 树突状细胞
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双向无粘结预应力混凝土井式楼盖的设计研究
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作者 张应翠 高兑现 晏兴威 《西安科技学院学报》 2000年第2期109-112,134,共5页
双向井字梁盖可在不增加层高的基础上提供大空间及美观的室内天花。本文通过一设计实例较详细介绍了无粘结部分预应力混凝土井字梁结构的方案确定和设计计算。结果表明 ,双向无粘结部分预应力结构合理。
关键词 无粘结预应力混凝土 部分预应力 等效荷载 井式楼盖
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