目的系统评价特利加压素联合生长抑素治疗肝硬化上消化道出血的疗效及安全性。方法检索自建库至2023年7月在PubMed、Cochrane Library、Embase、Web of Science、中国知网(CNKI)、万方数据库、维普数据库(VIP)、中国生物医学文献数据库(...目的系统评价特利加压素联合生长抑素治疗肝硬化上消化道出血的疗效及安全性。方法检索自建库至2023年7月在PubMed、Cochrane Library、Embase、Web of Science、中国知网(CNKI)、万方数据库、维普数据库(VIP)、中国生物医学文献数据库(SinoMed)等发表的关于特利加压素联合生长抑素治疗肝硬化上消化道出血的随机对照试验(RCTs),试验组采用特利加压素联合生长抑素,对照组单用生长抑素。采用Revman5.3和Stata17软件对全因死亡率、总体有效率、不良事件发生率、止血时间、输血量和住院时间进行Meta分析。结果纳入20项RCTs,共计1502例患者。Meta分析结果显示:与对照组相比,试验组治疗肝硬化上消化道出血可降低全因死亡率(OR=0.34,95%CI:0.19~0.59,P<0.01)和输血量(SMD=-2.29,95%CI:-3.13~-1.46,P<0.01),缩短止血时间(SMD=-1.64,95%CI:-2.03~-1.25,P<0.01)和住院时间(MD=-7.12,95%CI:-7.47~-6.77,P<0.01),提高总体有效率(OR=3.50,95%CI:2.46~4.97,P<0.01);而不良事件的发生率比较差异无统计学意义(OR=1.20,95%CI:0.82~1.75,P=0.34)。结论现有证据表明,与单用生长抑素相比,特利加压素联合生长抑素治疗肝硬化上消化道出血可显著提高总体有效率,降低死亡风险和输血量,缩短止血时间及住院时间,且不增加不良反应。展开更多
Boreal forests play an important role in global environment systems. Understanding boreal forest ecosystem structure and function requires accurate monitoring and estimating of forest canopy and biomass. We used parti...Boreal forests play an important role in global environment systems. Understanding boreal forest ecosystem structure and function requires accurate monitoring and estimating of forest canopy and biomass. We used partial least square regression （PLSR） models to relate forest parameters, i.e. canopy closure density and above ground tree biomass, to Landsat ETM＋ data. The established models were optimized according to the variable importance for projection （VIP） criterion and the bootstrap method, and their performance was compared using several statistical indices. All variables selected by the VIP criterion passed the bootstrap test （p〈0.05）. The simplified models without insignificant variables （VIP 〈1） performed as well as the full model but with less computation time. The relative root mean square error （RMSE%） was 29% for canopy closure density, and 58% for above ground tree biomass. We conclude that PLSR can be an effective method for estimating canopy closure density and above ground biomass.展开更多
文摘目的系统评价特利加压素联合生长抑素治疗肝硬化上消化道出血的疗效及安全性。方法检索自建库至2023年7月在PubMed、Cochrane Library、Embase、Web of Science、中国知网(CNKI)、万方数据库、维普数据库(VIP)、中国生物医学文献数据库(SinoMed)等发表的关于特利加压素联合生长抑素治疗肝硬化上消化道出血的随机对照试验(RCTs),试验组采用特利加压素联合生长抑素,对照组单用生长抑素。采用Revman5.3和Stata17软件对全因死亡率、总体有效率、不良事件发生率、止血时间、输血量和住院时间进行Meta分析。结果纳入20项RCTs,共计1502例患者。Meta分析结果显示:与对照组相比,试验组治疗肝硬化上消化道出血可降低全因死亡率(OR=0.34,95%CI:0.19~0.59,P<0.01)和输血量(SMD=-2.29,95%CI:-3.13~-1.46,P<0.01),缩短止血时间(SMD=-1.64,95%CI:-2.03~-1.25,P<0.01)和住院时间(MD=-7.12,95%CI:-7.47~-6.77,P<0.01),提高总体有效率(OR=3.50,95%CI:2.46~4.97,P<0.01);而不良事件的发生率比较差异无统计学意义(OR=1.20,95%CI:0.82~1.75,P=0.34)。结论现有证据表明,与单用生长抑素相比,特利加压素联合生长抑素治疗肝硬化上消化道出血可显著提高总体有效率,降低死亡风险和输血量,缩短止血时间及住院时间,且不增加不良反应。
基金supported by the 948 Program of the State Forestry Administration (2009-4-43)the National Natura Science Foundation of China (No.30870420)
文摘Boreal forests play an important role in global environment systems. Understanding boreal forest ecosystem structure and function requires accurate monitoring and estimating of forest canopy and biomass. We used partial least square regression （PLSR） models to relate forest parameters, i.e. canopy closure density and above ground tree biomass, to Landsat ETM＋ data. The established models were optimized according to the variable importance for projection （VIP） criterion and the bootstrap method, and their performance was compared using several statistical indices. All variables selected by the VIP criterion passed the bootstrap test （p〈0.05）. The simplified models without insignificant variables （VIP 〈1） performed as well as the full model but with less computation time. The relative root mean square error （RMSE%） was 29% for canopy closure density, and 58% for above ground tree biomass. We conclude that PLSR can be an effective method for estimating canopy closure density and above ground biomass.
