AIM:To synthetically analyze and probe into the diagnosis of H pyloriinfection,we followed the principles of evidencebased medicine.METHODS:A total of 22 papers of prevalence survey and case-control studies were selec...AIM:To synthetically analyze and probe into the diagnosis of H pyloriinfection,we followed the principles of evidencebased medicine.METHODS:A total of 22 papers of prevalence survey and case-control studies were selected for studying about diadynamic methods.Using meta-analysis, we analyzed the different diadynamic methods of H pyloriin China.RESULTS: Through meta-analysis,among the five diadynamic methods,the accuracy of polymerase chain reaction (PCR) was the highest (98.47%) and PCR was the most sensitive method (Sp:99.03%).CONCLUSION:Among the five diadynamic methods, the accuracy of PCR is the highest and PCR is the most sensitive method to diagnose the infection of Hpylori.展开更多
Objective: To explore the affecting factors of liver cancer recurrence after hepatectomy. Methods:The BP artificial neural network - Cox regression was introduced to analyze the factors of recurrence in1 457 patients....Objective: To explore the affecting factors of liver cancer recurrence after hepatectomy. Methods:The BP artificial neural network - Cox regression was introduced to analyze the factors of recurrence in1 457 patients. Results: The affecting factors statistically significant to liver cancer prognosis was selected.There were 18 factors to be selected by uni-factor analysis, and 9 factors to be selected by multi-factor analysis. Conclusion: The 9 factors selected can be used as important indexes to evaluate the recurrence of liver cancer after hepatectomy. The artificial neural network is a better method to analyze the clinical data, which provides scientific and objective data for evaluating prognosis of liver cancer.展开更多
基金Supported by the National Natural Science Fundation of China,No.30024002 and the University Key Teachers Fund of Ministry of Education of China,No.2000-65
文摘AIM:To synthetically analyze and probe into the diagnosis of H pyloriinfection,we followed the principles of evidencebased medicine.METHODS:A total of 22 papers of prevalence survey and case-control studies were selected for studying about diadynamic methods.Using meta-analysis, we analyzed the different diadynamic methods of H pyloriin China.RESULTS: Through meta-analysis,among the five diadynamic methods,the accuracy of polymerase chain reaction (PCR) was the highest (98.47%) and PCR was the most sensitive method (Sp:99.03%).CONCLUSION:Among the five diadynamic methods, the accuracy of PCR is the highest and PCR is the most sensitive method to diagnose the infection of Hpylori.
基金Supported by the National Natural Science Foundation of China (No. 39770835)
文摘Objective: To explore the affecting factors of liver cancer recurrence after hepatectomy. Methods:The BP artificial neural network - Cox regression was introduced to analyze the factors of recurrence in1 457 patients. Results: The affecting factors statistically significant to liver cancer prognosis was selected.There were 18 factors to be selected by uni-factor analysis, and 9 factors to be selected by multi-factor analysis. Conclusion: The 9 factors selected can be used as important indexes to evaluate the recurrence of liver cancer after hepatectomy. The artificial neural network is a better method to analyze the clinical data, which provides scientific and objective data for evaluating prognosis of liver cancer.
