Objective To systematically review the association between Chinese eye exercises and myopia onset in children and adolescents to provide a theoretical basis for clinical prevention of myopia. Methods The PubMed, Web of Science, EMbase, The Cochrane Library, CNKI, VIP, WanFang Data and CBM databases were searched from inception to March 2022 to collect observational studies about the association between Chinese eye exercises and myopia onset in children and adolescents. Two reviewers independently screened the literature, extracted data, and assessed the risk of bias of the included studies. Meta-analysis was then performed using RevMan 5.3 software. Results A total of 28 studies were included, including 217 112 subjects. The results of meta-analysis showed that doing eye exercises, doing eye exercises ≥2 times per day, doing eye exercises regularly or consistently, doing eye exercises seriously and doing eye exercises correctly and normatively were the protective factors of myopia onset in children and adolescents. Conclusion Current evidence shows that doing eye exercises, doing eye exercises ≥2 times per day, doing eye exercises regularly or consistently, doing eye exercises seriously, doing eye exercises correctly and normatively can prevent myopia onset in children and adolescents. Due to the limited quantity and quality of the included studies, more high-quality studies are needed to verify the above conclusion.
Objective To evaluate the efficacy of posterior approach discectomy with and without fusion in the treatment of lumbar disc herniation. Methods We searched MEDLINE (1950 to June 2007), OVID (1950 to April 2007), PUBMED, the China Biological Medicine Database (1978 to June 2007) and Wanfang Database (1981 to February 2007). We also handsearched several relevant journals for randomized controlled trials (RCTs) and quasi-randomized controlled trials (quasi-RCTs) comparing posterior approach discectomy with and without fusion in the treatment of lumbar disc herniation. The quality of the included trials was assessed. The Cochrane Collaboration’s RevMan 4.2.8 software was used for statistical analysis. Results Nine eligible trials involving 1911 patients were included. The meta-analyses found no statistically significant differences between the two operative procedures in the incidence of postoperative leg pain [RR 0.94, 95%CI (0.69, 1.28)], the proportion of patients requiring re-operation [RR 0.77, 95% CI (0.57, 1.04)], the incidence of post-operative lumbar canal stenosis [RR 1.23, 95%CI (0.26, 5.86)], and the relapse rate at other intervertebral spaces [RR 1.05, 95%CI (0.49, 2.26)] (Pgt;0.05).There is statistically significant differences between the two group in the incidence of peri-operative complications [RR 1.46, 95%CI (1.06, 2.00)]. Discectomy plus fusion was superior to discectomy alone in incidence of postoperative back pain [RR 0.70, 95%CI (0.53, 0.94)], relapse rate at either intervertebral space [RR 0.30, 95%CI (0.18, 0.48)] and at the same intervertebral space [RR 0.12, 95%CI (0.04, 0.37)]. Conclusions Since all the included studies were controlled trials with a great potential for biases, high-quality, large-scale randomized controlled trials are required.
Objective To introduce the method of reading systematic reviews. Methods Papers and books on reading and evaluating medical literature were searched comprehensively, and general principles and approaches of reading systematic reviews were summarized. Results The following 10 points were summarized to help read systematic reviews in a scientific, rapid, and efficient way: ① Was there any overviews of reviews? ② Was there a recent update? ③ Were the previous relevant systematic reviews integrated? ④ Were sound searching strategies established and implemented? ⑤ Was quality evaluation done concerning the original research? ⑥ Were the results of the original research conflated properly? ⑦ Was there any explanation to the limitations or weaknesses of the systematic review? ⑧ Were the problems to be solved in the next stage put forward? ⑨ Were the abstracts and full-texts reported sufficiently? ⑩ Were the systematic reviews helpful in solving practical problems? Additionally, the readers were divided into the four groups based on their application of the systematic reviews: health policy makers, health care suppliers, researchers as well as patients and common people. Conclusion The reading of the systematic reviews should be stressed in order to better guide decision-making and promote evidence-based practice.
ObjectiveTo systematically review the willingness rate of Chinese residents to renew family doctors contract services. MethodsPubMed, Web of Science, EMbase, ScienceDirect, CNKI, WanFang Data and VIP databases were electronically searched to collect cross-sectional studies related to the willingness of Chinese residents to renew family doctors contract services from inception to November 2021. Two reviewers independently screened literature, extracted data, and assessed the risk of bias of the included studies. Meta-analysis was then performed by using Stata 16.0 software. ResultsA total of 23 cross-sectional studies involving 22 629 subjects were included. The results of meta-analysis showed that the willingness rate of Chinese residents to renew family doctors contract services was 84.2% (95%CI 80.0% to 88.3%). The results of subgroup analysis showed that contracted residents who were surveyed in 2011 to 2015 (85.7%), living in eastern (87.0%) and urban (84.7%), above age 60 (88.5%), females (85.1%), non-married (86.5%), with primary school and below education level (91.4%), with employee medical insurance (84.5%) and residents medical insurance (85.2%), not working (77.9%), with high and medium levels of health status (84.5%), with chronic diseases (86.7%), preferred to consult general diseases in primary health care institutions (89.5%), and walking to nearby community health service institutions requiring less than 30 minutes (86.9%) had a relatively high willingness to renew contracts. The contracted residents whose health status improved (91.0%), medical expenses reduced (91.5%) and medical portability improved (88.4%), more satisfied with contracted services (85.3%), more trusted in contracted doctors (87.9%), knowing family doctors’ name (86.7%) and contact information (84.2%) and enjoying visiting medical service (79.7%), telephone follow-up (79.6%), and health files establishment (80.1%) were more willing to renew contracts. ConclusionCurrent evidence suggests that the willingness of Chinese residents to renew family doctors contract services is high, however, it remains to be improved. Due to the limited quality and quantity of the included studies, more high-quality studies are needed to verify the above conclusion.
Objective To systematically review the effectiveness and model building process of heparin treatment for animal model with smoke inhalation injury. Methods Databases including PubMed, EMbase, CBM, CNKI, VIP and WanFang Data were searched to collect animal experiments about the treatment of heparin for animal model with smoke inhalation injury from inception to November 2016. Two reviewers independently screened literature, extracted data and assessed the risk of bias of included studies. Then meta-analysis was conducted by RevMan 5.3 software. Results A total of nine studies involving 11 animal experiments were included. The results showed that building animal model with smoke inhalation injury were through burning of cotton towels or pine sawdust by sheep or rats below 40℃. The results of meta-analysis showed that there was no significant difference in mortality rate between two groups (heparin group vs. control group: RR=0.38, 95%CI 0.14 to 1.05, P=0.06; heparin plus DMSO group vs. DMSO group: RR=0.10, 95%CI 0.01 to 1.51, P=0.10). In addition, the pulmonary artery pressure (MD=–3.31, 95%CI –4.51 to –2.11, P<0.000 01), wet to dry weight ratio (MD=–0.90, 95%CI –1.19 to –0.61, P<0.000 01), and lung water content (MD=–1.18, 95%CI –1.67 to –0.70, P<0.000 01) of the experimental group were lower than those in the control group. PaO2/FiO2 after 12 hours (MD=131.00, 95%CI 59.54 to 202.46, P=0.000 3), PaO2/FiO2 after 24 hours (MD=114.00, 95%CI 60.56 to 167.44, P<0.000 1), PaO2/FiO2 after 48 hours (MD=46.00, 95%CI 20.62 to 71.38, P=0.000 4) were higher than those in the control group. However, there was no significant difference in coagulation function between both groups. Conclusion The current evidence shows that the establishment of animal model of smoke inhalation injury is still lack of standard method. Heparin can decrease pulmonary artery pressure and lung water content in animal models with smoke inhalation injury. Due to the limited quality and quantity of included studies, the above conclusions are still needed to be verified by more high quality studies.
Objective To systematically review the efficacy and safety of acupuncture for the treatment of tumor-related cognitive dysfunction. Methods The PubMed, The Cochrane Library, EMbase, CNKI, WanFang Data, VIP and CBM databases were electronically searched to collect studies on acupuncture for the treatment of tumor-related cognitive dysfunction from the establishment of the database to February 13th, 2022. Two reviewers independently screened the literature, extracted data, and assessed the risk of bias of the included studies. Meta-analysis was then performed using RevMan 5.4.1 software. Results A total of 16 studies involving 1 361 patients were included. The results of meta-analysis showed that the mini-mental state examination (MD=1.82, 95%CI 1.49 to 2.15, P<0.000 01) and Montreal cognitive assessment (MD=1.56, 95%CI 0.83 to 2.29, P<0.0001) scores of the acupuncture treatment group were superior to those in the control group. Furthermore, the acupuncture treatment group showed a reduced incidence of postoperative cognitive dysfunction (RR=0.50, 95%CI 0.39 to 0.63, P<0.000 01) and decreased levels of interleukin-6 (MD=−10.43, 95%CI −14.91 to −5.95, P<0.000 01), interleukin-1β (MD=−47.14, 95%CI −63.92 to −30.36, P<0.000 01), and tumor necrosis factor-α (MD=−9.13, 95%CI −12.38 to −5.89, P<0.000 01). In contrast, the visual analog scale score of the acupuncture treatment group (MD=−1.26, 95%CI −2.06 to −0.47, P=0.002) was better than that of the control group. No significant difference was found in the level of central nervous system-specific protein (S100β) (MD=−0.06, 95%CI −0.13 to 0.01, P=0.12) between the two groups. Conclusion Acupuncture therapy can improve tumor-related cognitive function in patients. Its curative effect is better than that of non-acupuncture therapy; however, its ability to reduce S100β levels is not significantly different from that of non-acupuncture therapy. Due to the limited quantity and quality of the included studies, more high-quality studies are needed to verify the above conclusion.
ObjectiveTo systematically review the value of mass screening of serum pepsinogen test for Asian population with high-risk gastric carcinoma. MethodsWe electronically searched databases including PubMed, EMbase, The Cochrane Library (Issue 12, 2013), CNKI, WanFang Data, VIP and CBM for diagnostic tests on serum pepsinogen test versus with pathological biopsy/X-ray examination (gold standard) between January 2004 and January 2014. Two reviewers independently screened literature according to the inclusion and exclusion criteria, extracted data, and assessed methodological quality of included studies. Then meta-analysis was conducted using Meta-DiSc software (version 1.4). ResultsA total of 15 studies involving 180 934 subjects were included. ROC curve showed "shoulder-arm shape" distribution. The results of Spearman correlation analysis suggested a significance of the threshold effect (P=0.001). The results of meta-analysis showed that, the area under curve (AUC) was 0.74. ConclusionSerum pepsinogen has good value in the screening of gastric carcinoma among Asian permanent residents. Due to limited quality of studies, the above conclusion should be verified by conducting more high quality studies.
ObjectiveTo evaluate the effect on complication after esophagectomy by comparing the different methods of anastomosis (cervical versus thoracic anastomosis). MethodsWe searched the following databases including PubMed, EMbase, The Cochrane Library, Web of Science, CBM, CNKI, VIP and Wanfang database to identify randomized controlled trials (RCTs) of cervical versus thoracic anastomosis for esophagectomy patients from establishment of each database to October 30, 2014. Quality of the included RCT was evaluated. Meta-analysis was conducted by using RevMan 5.2 software. ResultsWe finally identified 4 RCTs involving 267 patients. In terms of the postoperative complication, the incidence of anastomotic leakage (RR=3.83, 95%CI 1.70 to 8.63, P=0.001) with cervical anastomosis was significantly higher than that of the patients with thoracic anastomosis. However, there was no statistical difference in incidence of anastomotic stricture (RR=1.04, 95%CI 0.62 to 1.76, P=0.87), pulmonary complication (RR=0.73, 95%CI 0.27 to 1.91, P=0.52), and mortality (RR=0.89, 95%CI 0.40 to 1.97, P=0.77) between cervical and thoracic anastomosis. ConclusionCompared with thoracic anastomosis, the method of cervical anastomosis is associated with a higher incidence of anastomotic leakage. But there are many unclear factors about anastomotic stricture, pulmonary complication and mortality, further measurement should be taken.
ObjectiveTo systematically review the clinical efficacy and effects on pregnancy outcomes of S-adenosy-L-methionine combined with ursodesoxycholic acid in the treatment of intrahepatic cholestasis of pregnancy. MethodsDatabases such as PubMed, The Cochrane Library, CNKI, VIP, WanFang Data were searched for the studies about the clinical efficacy and effects on pregnancy outcomes of S-adenosy-L-methionine combined with ursodesoxycholic acid in the treatment of intrahepatic cholestasis of pregnancy up to December 31st, 2013. Two reviewers independently screened literature, extracted data and evaluated methodological quality. Then meta-analysis was conducted using RevMan 5.0.24 software. ResultsA total of 11 RCTs involving 776 patients were included. The results of meta-analysis showed that, combined medication reduced blood biochemical indexes inlcuding ALT (MD=3.63, 95%CI 0.63 to 6.64, P=0.02), TB (MD=3.70, 95%CI 1.45 to 5.96, P=0.001), and AST (MD=7.61, 95%CI 2.47 to 12.75, P=0.004). Combined therapy significantly decreased the rates of amniotic fluid contamination (OR=0.29, 95%CI 0.19 to 0.45, P=0.000 01), cesarean section (OR=0.53, 95%CI 0.36 to 0.79, P=0.002), postpartum hemorrhage (OR=0.32, 95%CI 0.12 to 0.90, P=0.03), preterm birth (OR=0.36, 95%CI 0.24 to 0.55, P < 0.000 01), fetal distress (OR=0.33, 95%CI 0.19 to 0.58, P=0.000 1) and neonates asphyxia (OR=0.30, 95%CI 0.19 to 0.47, P < 0.000 01). Combined therapy was also beneficial to improving pruritus symptoms (MD=0.20, 95%CI 0.08 to 0.31, P=0.000 08) and benefiting fetus growth (MD=0.45, 95%CI 0.23 to 0.66, P < 0.000 1). ConclusionThe combination of S-adenosy-L-methionine and ursodesoxycholic acid is superior to ursodesoxycholic acid alone in improving clinical symptoms and pregnant outcomes of patients with intrahepatic cholestasis of pregnancy.
ObjectiveTo systematically review the protective effect of serum maternal respiratory syncytial virus (RSV) antibodies on infants with RSV infection. MethodsPubMed, EMbase, The Cochrane Library, CBM, CNKI and WanFang Data databases were electronically searched to collect observational studies on the correlation between serum maternal RSV antibodies and infants with RSV infection from inception to July 18, 2021. Two reviewers independently screened literature, extracted data and assessed the risk of bias of the included studies, then, qualitative analysis was performed. ResultsA total of 19 studies were included, and 60% of those studies suggested that a higher level of maternal antibodies could prevent RSV infection. However, the remaining 40% of them showed that there was no significant difference in the level of RSV maternal antibodies between the infected group and the non-infected group. Further more, in the studies of the correlation between maternal antibody level and disease severity after RSV infection, 55% of those showed that maternal antibody level was negatively correlated with disease severity. ConclusionThe protective effect of serum maternal RSV antibodies on infants reported in different studies varies. Whether it can prevent RSV infection and affect the severity of RSV infected children still needs to be explored.