Objective To evaluate the quality of evidence of systematic reviews or meta-analyses regarding outcomes in nursing field in China using the Grade system, so as to get known of the status of the quality of evidence and promote the application of the evaluation of the quality of evidence of systematic reviews. Methods The quality of evidence regarding the included outcomes was input, extracted and qualitatively graded, using GRADEpro 3.6 software. Then, we carefully analyzed and elaborated the factors of downgrading and upgrading that affects the quality of evidence in the process of evaluation. Results 53 systematic reviews or meta-analyses involving 188 outcomes were identified and evaluated. The results showed that high, moderate, low and very low levels of quality of evidence were 2.7%, 27.1%, 51.1%, and 19.1%, respectively; and low-level quality of evidence accounted for the most. Conclusion The quality of evidence produced by systematic reviews or meta-analyses in nursing field in China is poor and urgently needs improvement. The reviewers should abide by the methodological standards in the process of making systematic reviews or meta-analyses. The quality of evidence in terms of each outcome should be evaluated and fully reported.
ObjectiveTo systematically review the efficacy of Chinese herbal enema in ileus patients. MethodsThe randomized controlled trials (RCTs) and quasi-RCTs about Chinese herbal enema and gastrointestinal intubation versus western medicines in the treatment of ileus disease was searched in PubMed, Web of Science, EMbase, The Cochrane Library (Issue 4, 2013), CBM, CNKI, VIP and WanFang Data from the date of their establishment to July 2013. Two reviewers independently screened literature according to the inclusion and exclusion criteria, extracted data, and assessed the methodological quality of included studies. Then meta-analysis was performed using RevMan 5.1. ResultsA total of 27 RCTs and 3 quasi-RCTs involving 3 074 patients were included. The results of meta-analysis showed that the Chinese herbal enema and gastrointestinal intubation group was superior to the control group in raising the total clinical effective rate (OR=4.69, 95%CI 3.70 to 5.94, P < 0.000 01), as well as shortening the hospitalization time (SMD=-1.19, 95%CI-1.42 to-0.96, P < 0.000 01), time of anus exhaust (SMD=-1.52, 95%CI-1.76 to-1.28, P < 0.000 01), defecation (SMD=-2.27, 95%CI-3.43 to-1.11, P=0.000 1), time of gastric tube indwelling (SMD=-1.56, 95%CI-1.86 to-1.27, P < 0.000 01), and symptoms complete resolution (SMD=-0.74, 95%CI-1.11 to-0.37, P < 0.000 1), all with significant differences. ConclusionChinese herbal enema and gastrointestinal intubation is more beneficial than western medicine alone for ileus. Due to limited quality of the included studies, the abovementioned conclusion still needs to be verified by conducting more high quality blinding RCTs.
ObjectiveTo systematically review the interventional effects of Simiao Yong'an decoction on atherosclerosis animal models.MethodsDatabase including CNKI, WanFang Data, VIP, PubMed, The Cochrane Library, and Web of Science were searched to collect animal experiments on atherosclerosis model intervention by Simiao Yong’an decoction from inception to October 2020. Two reviewers independently screened the literature, extracted data, and used the SYRCLE animal experiment bias risk assessment tool to evaluate risk bias of included studies, and then used RevMan 5.4.1 software for meta-analysis.ResultsA total of 14 animal experiments were included. The results of meta-analysis showed that compared with the blank model group, the Simiao Yong’an decoction group could reduce the aortic plaque area (SMD=−2.04, 95%CI −3.35 to −0.74), the ratio of aortic plaque to lumen area (SMD=−1.72, 95%CI −2.48 to −0.97), total cholesterol level (SMD=−0.97, 95 %CI −1.72 to −0.22), triglyceride level (SMD=−1.21, 95%CI −1.82 to −0.60), low-density lipoprotein cholesterol level (SMD=−1.82, 95%CI −3.12 to −1.53), tumor necrosis factor-α level (SMD=−3.36, 95%CI −4.21 to −2.52), monocyte chemotactic factor-1 level (SMD=−2.98, 95%CI −4.60 to −1.35) and C-reactive protein level (SMD=−0.60, 95%CI −1.08 to −0.11); however, in the high-density lipoprotein cholesterol level (SMD=0.66, 95%CI −0.10 to 1.42) and the level of interleukin 1 (SMD=−1.41, 95%CI −4.11 to 1.30), the differences were not statistically significant.ConclusionsThe existing evidence shows that the intervention of Simiao Yong’an decoction in the atherosclerosis model can reduce the aortic plaque area and the ratio of the aortic plaque to the lumen area, reduce total cholesterol, triglycerides, and low-density lipoprotein cholesterol levels, and reduce tumor necrosis factor-α, monocyte chemotactic factor-1, and C-reactive protein levels. Due to limited quality of included studies, more high quality studies are required to verify the above conclusions.