目的探究减瘤手术对合并远处转移的上尿路尿路上皮癌患者预后的影响。方法筛选2010年1月至2015年12月SEER数据库中已经发生远处转移的上尿路尿路上皮癌患者的临床数据,根据是否行减瘤手术分为减瘤手术组和未做减瘤手术组,比较组间基线...目的探究减瘤手术对合并远处转移的上尿路尿路上皮癌患者预后的影响。方法筛选2010年1月至2015年12月SEER数据库中已经发生远处转移的上尿路尿路上皮癌患者的临床数据,根据是否行减瘤手术分为减瘤手术组和未做减瘤手术组,比较组间基线差异。通过单因素和多因素Cox比例风险回归模型分析与已经发生远处转移的上尿路尿路上皮癌患者生存有关的预后影响因素。通过Kaplan-Meier法绘制生存曲线分析各组的生存情况。结果本研究共纳入患者238例,减瘤手术者157例,未做减瘤手术者81例,总体基线较为平稳。单因素和多因素Cox回归分析结果显示:减瘤手术、化学药物治疗(以下简称化疗)、肝转移是总生存期(overall survival,OS)的独立风险因素;减瘤手术和化疗是癌症特异性生存期(cancer special survival,CSS)的独立风险因素。Kaplan-Meier曲线显示:年龄、减瘤手术、化疗、肝转移与OS密切相关;减瘤手术、化疗、肝转移与CSS密切相关。结论对于已经发生远处转移的上尿路尿路上皮癌患者,减瘤手术可明显改善患者预后,减瘤手术、化疗、肝转移是总生存结局的独立影响因素,减瘤手术和化疗是疾病相关生存结局的独立影响因素。展开更多
A model of curvature and tip deflection of multilayer thermal cantilever actuators is derived.The sim-plified expression received from the model avoids inverting complex matrices enhances understanding and makes it ea...A model of curvature and tip deflection of multilayer thermal cantilever actuators is derived.The sim-plified expression received from the model avoids inverting complex matrices enhances understanding and makes it easier to optimize the structure parameters.Experiment is performed,the modeled and experimental results demonstrate the validity of the model,and it also indicates that Young's module makes great contribution to the deflection;therefore,thin layers cannot be ignored arbitrarily.展开更多
文摘目的探究减瘤手术对合并远处转移的上尿路尿路上皮癌患者预后的影响。方法筛选2010年1月至2015年12月SEER数据库中已经发生远处转移的上尿路尿路上皮癌患者的临床数据,根据是否行减瘤手术分为减瘤手术组和未做减瘤手术组,比较组间基线差异。通过单因素和多因素Cox比例风险回归模型分析与已经发生远处转移的上尿路尿路上皮癌患者生存有关的预后影响因素。通过Kaplan-Meier法绘制生存曲线分析各组的生存情况。结果本研究共纳入患者238例,减瘤手术者157例,未做减瘤手术者81例,总体基线较为平稳。单因素和多因素Cox回归分析结果显示:减瘤手术、化学药物治疗(以下简称化疗)、肝转移是总生存期(overall survival,OS)的独立风险因素;减瘤手术和化疗是癌症特异性生存期(cancer special survival,CSS)的独立风险因素。Kaplan-Meier曲线显示:年龄、减瘤手术、化疗、肝转移与OS密切相关;减瘤手术、化疗、肝转移与CSS密切相关。结论对于已经发生远处转移的上尿路尿路上皮癌患者,减瘤手术可明显改善患者预后,减瘤手术、化疗、肝转移是总生存结局的独立影响因素,减瘤手术和化疗是疾病相关生存结局的独立影响因素。
基金Supported by the National Natural Science Foundation of China (Grant No. 60576053)Hi-Tech Research and Development Program of China (Grant No. 2007AA03Z333)
文摘A model of curvature and tip deflection of multilayer thermal cantilever actuators is derived.The sim-plified expression received from the model avoids inverting complex matrices enhances understanding and makes it easier to optimize the structure parameters.Experiment is performed,the modeled and experimental results demonstrate the validity of the model,and it also indicates that Young's module makes great contribution to the deflection;therefore,thin layers cannot be ignored arbitrarily.