Objective To systematically evaluate the effectiveness and safety of China-made omeprazole in treating acute non-variceal upper gastrointestinal bleeding. Methods Such databases as PubMed, MEDLINE, Springer, The Cochrane Library, CNKI, VIP, CBM and WanFang data were searched to collect the randomized controlled trials (RCTs) about China-made omeprazole in treating acute non-variceal upper gastrointestinal bleeding, and the references of included studies were also retrieved. The retrieval time was from inception to December 2012. Two reviewers independently screened the literature according to the inclusion and exclusion criteria, extracted the data, and assessed the quality, and then the meta-analysis was conducted by using RevMan 5.1 software. Results A total of 11 RCTs were included. Among all 1 075 patients, 544 were in the treatment group, while the other 531 were in the control group. The results of meta-analysis showed that, there were no significant differences in the total effective rate (OR=0.68, 95%CI 0.35 to 1.33, P=0.26) and safety (RR=1.33, 95%CI 0.45 to 3.91, P=0.96) between the China-made omeprazole and imported omeprazole. Conclusion China-made omeprazole is effective and safe in treating acute non-variceal upper gastrointestinal bleeding in comparison with the imported omeprazole.
Objective To investigate the epidemical status of influenza in Mianyang during 2010-2011, so as to provide evidence for formulating prevention and control strategies. Methods Surveillance data, ILI etiological results, outbreak and epidemic situation of the influenza-like illnesses (ILI) in Mianyang during 2010-2011 were collected for analysis. Results There were 12 100 ILI cases reported in 2010, accounted for 2.72% of the total outpatients. While 8 364 ILI cases accounted for 1.83% of the total outpatients were reported in 2011, reduced by 32.47% compared with 2010. The temporal distribution of doctor-visiting ratio in those two years was in an increased bimodal pattern. Most cases were children aged 0-5 years, accounted for 46.24%. Most ILI cases were treated in the department of fever, accounted for 88.56%. A total of 788 ILI specimens were collected for the detection of Real time RT-PCR, of which 34 specimens showed positive strains (4.31%) including 5 influenza A/H1N1 (0.63%), 8 influenza A (1.02%), 1 seasonal influenza A/H3 (0.13%) and 20 influenza B (2.54%). No outbreak and epidemic situation in Mianyang during 2010-2011. Conclusion The influenza activity is relatively stable without large-scale outbreak in Mianyang during 2010-2011. The reporting quality of surveillance hospitals should be improved and the lab of flu surveillance network should actively prepare to do the isolation and identification of influenza virus. It is necessary to enhance flu surveillance so as to prevent and control influenza prevalence．
Objective To systematically review the psychological resilience intervention in China, so as to evaluate its effectiveness. Methods Studies published as of October 2012 were searched in CBM, VIP, CNKI and WanFang Data. The randomized controlled trials (RCTs) and controlled before-and-after trials (CBAs) about psychological resilience intervention were included. Two reviewers independently performed screening, quality assessment and data extraction, and then reached a consensus after cross-check and discussion. Qualitative synthesis was adopted instead of meta-analysis for the existed significant deviations in outcomes of included studies. Results A total of 8 studies including 3 RCTs and 5 CBAs were included for the analysis. All the studies referred to the objects of students, including 6 for college students, 1 for secondary school students and 1 for left behind students in rural junior school. All 8 studies evaluated the effectiveness of group psychological guidance, 1 of which also compared the outcomes of psychological lectures. All the included trials suggested that group psychological guidance and psychological lectures might significantly improve the psychological resilience of subjects. Conclusion Current studies on psychological resilience intervention are limited, the measure has been taken seems relatively single, which mainly focuses on students and lacks of high-quality research design. It suggests take more diverse psychological resilience interventions for different population, and evaluate both short-term and long-term effectiveness by performing large sample, strictly designed and high-quality trials.
Objective To evaluate the effects of knowledge about malaria after the implementation of Global Fund Malaria Project in Chongqing for future prevention and treatment of malaria. Methods Four counties were selected from the counties of Global Fund Malaria Project of Chongqing. Three towns were randomly selected in each selected county; one primary school and one high school were investigated in each selected town; one class was randomly selected in each selected school; and 30 students in each selected class were randomly selected. Then, three villages were randomly selected in each selected county; one group of villagers were randomly selected in each selected village; and 200 local residents were randomly investigated in each selected villager group. Before and after implementation of Global Fund Malaria Project, their awareness of malaria was investigated using a questionnaire. Results After implementation of the project, the pupils’ average awareness rate of knowledge about malaria rose from 58.94% to 89.96% (χ2=179.48, Plt;0.01) with average increase of 31.02%; the middle school students’ average awareness rate of rose from 52.83% to 86.06% (χ2=196.64, Plt;0.01) with average increase of 33.23%; the local residents’ average awareness rate of knowledge about malaria rose from 56.74% to 83.89% (χ2=1 281.70, Plt;0.01) with average increase of 27.15%. The accuracies of all respondents after project implement was higher than before. After the implementation, the accuracies of malaria transmission route, main clinical symptoms, and seeing doctor while malaria occurring were all above 80%, but the accuracy of the index of best preventive methods was less than 50%. Conclusion The implementation of Global Fund Malaria Project in Chongqing increase the awareness rate of malaria knowledge but the relevant education should be strengthened, so as to promote general population’s awareness of malaria prevention.
Objective To explore the effects of evidence-based medicine (EBM) course on improvement of information consciousness and information morality for medical students.Methods A total of 288 medical undergraduates and postgraduates, who took EBM as an elective course in Sichuan University, were surveyed with ‘information consciousness and information morality questionnaire’ before and after that course. Results After the EBM course, the number of students surfing the Internet increased by 5%, of which postgraduates increased by 24% with significant differences (Plt;0.05), while their purpose for specialized knowledge increased by 7%; the number of students making plans in advance increased by 7%, and the number of students learning intellectual property and copyright law increased by 7%; the number of postgraduates knowing how to cite articles increased by 12% with significant differences (Plt;0.05); and the number of students not knowing how to get legitimate information decreased by 12% with significant differences (Plt;0.05). Conclusion Evidence-based medicine course is positive for the information consciousness and information morality of medical students.
Objective In order to improve the standing on the studies of Exercise Prescription (EP), a systematic review was conducted to provide reference and theory for further studies. Methods A broad computerized literature search of Medlin via Ovid, PubMed in all fields, Sport Discus, CINAHL, CAM, EMbase, EBM Cochrane Database of SR, and Web of Science was carried out till June 2008. Firstly, four categorical searches were conducted with the following keywords for searches: Exercise Prescription, Physical Fitness, Exercise Therapy, Fitness Assessment, Exercise Test and RCTs, and the searched results were checked by reviewers and duplicate results were removed. Then all titles were manually searched for potential inclusion in the review. Articles retrieved, review articles were examined for further relevant references. Results There were 318 relevant articles, however, the RCTs were only 7, and systematic review and meta-analysis were only one, respectively. Considering the importance and reference values there were 93 articles were included. 1970s was the developing age of EP; 1980s more specific EP were provided for many purposes; 1990s with the techniques developing of physical fitness, exercise therapy, fitness assessment and exercise test, EP for treating and rehabilitating more chronics and civilizing diseases were developed; 2000s the RCTs and CCTs were applied in the EP studies. Conclusions The developing of EP has close relationship with the developing of physical fitness, exercise therapy, fitness assessment, and exercise test. Although the RCTs researches in this field were limited, most of them were positive to support the advantage of EP. How to highly improve the advantages and greatly decrease the risk of EP is still valuable to study in the future.
Objective To evaluate the effectiveness of GnRH antagonist on vitro fertilization-embryo transfer (IVF-ET). Methods We searched CBMdisc (1979 to 2010), Wanfang (1994 to 2010), CNKI (1994 to 2010), VIP (1989 to 2010), PubMed (1997 to 2010), PML (1997 to 2010), FMJS (2000-2010), and 9 related journals to identify randomized controlled trials (RCTs) on the comparison between GnRH antagonist (GnRHA) and GnRH agonist (GnRHa). The quality of included trials was critically appraised. RevMan 4.2.7 software was used for statistical analysis. Results Six published RCTs involving 1 208 participants were included. Compared with the GnRHa group, stimulation duration in the GnRHA group was lower (WMD= –1.07, 95%CI –1.38 to –0.76), dose of gonadotrophins (Gns) in the GnRHA group was slightly lower (WMD= –0.49, 95%CI –1.63 to 0.66), endometrial thickness at the time of HCG administration was no significant difference in the two groups (WMD= –0.09, 95%CI –0.42 to 0.24), number of oocytes retrieved in the GnRHA group was lower (WMD= –1.80, 95%CI –2.48 to –1.12), OHSS rate in the GnRHA group was slightly lower (Peto OR= 0.77, 95%CI 0.35 to 1.72), pregnancy rate in the GnRHA group was slightly lower (Peto OR= 0.83, 95%CI 0.65 to 1.05), miscarraige rate as no significant difference in the two groups (Peto OR= 1.49, 95%CI 0.79 to 2.82). Conclusions Compared with GnRHa, GnRHA requires shorter stimulation duration and less Gn, less affected the pregnancy rate, and reduces the incidence of OHSS. The use of GnRHA in clinical practice is relatively flexible with good acceptability. GnRHA for the superovulation IVF-ET offers an alternative treatment. The above conclusion still needs more well-designed, multi-center, and large-scale RCTs to confirm and update.
The re-evaluation of the effectiveness of new drugs is of great importance when they are in post-market for there exist some limitations in clinical trials before these drugs are put on the market. The large sample multi-centre randomized controlled trial is the best method of re-evaluation of the effectiveness of new drugs. It could appropriately evaluate not only the large-term efficacy and safety of drugs, but the treatment effect on the survival state and its complications as well. This method will also lead to a great social amp; economic benefit.
Objective To evaluate the effectiveness of TCu380AIUD comparing with other common IUDs. Methods CBMDISC (1979 to 2005), Wanfang (1994 to 2005), CNKI (1974 to 2005), CMCC (1979 to 2005), CMAC (1994 to 2005), EMbase (1974 to 2004), MEDLINE (1974 to 2005), WHO/RHL (2004 to 2005), The Cochrane Library (Issue 4, 2004), SCI (1985 to 2005), POPLINE (1966 to 2003) and 9 relevant journals were searched for randomized controlled trials (RCTs) comparing TCu380AIUD with other common IUDs. The quality of included trials was critically appraised. RevMan4.2.7 software was used for statistical analysis. Results Fifteen published studies involving 20 417 participants were included. The results of meta-analyses were expressed with OR (cumulative expulsion rate, cumulative pregnancy rate, cumulative rate of removing for medical reasons) and 95% CI. Compared with TCu380A, TCu220C resulted in lower cumulative expulsion rate at 0.5 and 1 year of follow-up [OR 0.36 (0.18 to 0.70); 0.44 (0.31 to 0.62), respectively], higher cumulative pregnancy rate at ten years of follow-up [1.22 (1.04 to 1.43)], lower cumulative rate of removing for medical reasons at 0.5 year of follow-up [0.59 (0.36 to 0.97)]; MLCu375 resulted in higher cumulative expulsion rate at 1 year of follow-up [2.17 (1.29 to 3.67)], higher cumulative pregnancy rate at 1 and 2 years of follow-up [1.72 (1.18 to 2.50); 1.28 (1.02 to 1.60)]; UCD300 resulted in lower cumulative expulsion rate at five years of follow-up [0.38 (0.27 to 0.56)]; Medicated Gamma 380IUD resulted in lower cumulative rate of removing for medical reasons at 1 year of follow-up [0.31 (0.14 to 0.70)]. Conclusions Compared with TCu380A which is considered as a standard of IUDs, the performance of TCu220C is inferior in contraception, but TCu220C is also a good IUD in performance; The overall clinical performance of MLCu375IUD was as good as that of TCu380A; UCD300 is of the characteristic of lower cumulative expulsion rate; Medicated Gamma 380IUD can decrease side effects effectively. However, larger multi-center randomized comparative trials with longer follow-up periods are needed to confirm the conclusion
Objective To assess the effectiveness of adjuvant chemotherapy with complete resection for non-small cell lung cancer. Methods We searched MEDLINE （1966 ～ 2005 ）, EMBASE （1984-2005 ）, The Cochrane Library （Issue 2,2005 ）, CBMdisc （1979-2005 ）, CNKI （1994-2005 ）, VIP （1989-2005 ）, CMCC （1994-2005 ） and Wanfang Database with key words of non-small cell lung cancer or NSCLC and adjuvant chemotherapy, to identify randomized control trials （RCTs） of platinum-based adjuvant chemotherapy plus complete resection versus complete resection alone for non-small cell lung cancer patients. Two reviewers evaluated the quality of literature independently. Then we conducted meta-analysis using RevMan 4.2.7 software. Results We identified 9 RCTs and did not carry out pool analysis for the difference of chemotherapy regimens between the studies. The results of three studies showed that 5 years＇ mortality of adjuvant chemotherapy group was lower than that of surgery group alone. The results of the other 6 studies showed there was no statistical difference in 5 years＇ mortality between the adjuvant chemotherapy plus surgery and surgery alone groups. Conclusions The effectiveness of some adjuvant chemotherapy regimens with complete resection in patients with non-small cell lung cancer has been improved. But the number of each chemotherapy regimen RCT is too small and with poor quality. So more multi-center RCTs with a larger sample size and high quality are needed.