Randomized controlled trial(RCT) represents the "gold standard" for estimating the causal effects of interventions; however, their implementation in the field of health policy evaluation is frequently hindered by logistical feasibility and ethical constraints. Target Trial Emulation (TTE), a framework originating in clinical epidemiology, facilitates rigorous causal inference from observational data by explicitly emulating the design of an idealized "target trial". Recently, the application of TTE has transitioned from individual-level clinical interventions—such as pharmacological or surgical treatments—to population-level health policy evaluations. This interdisciplinary translation is not a localized conceptual shift but necessitates a series of comprehen-sive methodological adaptations. This paper systematically delineates the core logic of extending the TTEframework into the realm of health policy, providing a profound analysis of the transformation and reconstruction of critical elements, including study units, intervention definitions, time zero, causal estimands, and analytical strategies. Furthermore, it examines the unique challenges inherent in policy contexts, such as policy heterogeneity, staggered adoption, concurrent policy interference, and data granularity limitations. The paper also evaluates the integration of analytical methods, such as instrumental variables (IV) and difference-in-differences (DID), within the TTE framework. This synthesis aims to provide methodological guidance and prospective insights for conducting high-quality policy evaluations using real-world data (RWD).

Objective Innovatively establish an information management model for the entire lifecycle of equipment ap-plicable to disease prevention and control centers.Methods An in-depth analysis of the current situation of equipment manage-ment and existing problems,relying on the laboratory information management system,combined with the theory of high-quality full-life-cycle management,incorporating advanced information technology management,and adoption of targeted measures to pro-mote the solution of problems one by one.Results Implement and improve the whole life cycle information management node,set up an equipment management committee,innovate the use of new equipment identification plates,develop a mobile platform client,and realize management data visualization.Conclusion The Informatisation management mode of the whole life cycle of equipment with the Center for Disease Control and Prevention characteristics.It realizes the whole life cycle,dynamic and Informatisation man-agement of equipment from demand,acceptance,use,maintenance,measurement,deactivation and scrapping.It strengthens the process management and quality control of equipment and serves to improve disease prevention and control capabilities.

Objective To investigate the incidence and adverse prognosis of late onset sepsis(LOS)in neonates in neonatal intensive care unit(NICU).Methods A retrospective study was conducted to collect and analyze the peri-natal condition,underlying diseases,invasive procedures,and adverse prognosis of neonates in NICU of a regional maternal and child healthcare hospital from 2019 to 2023.According to whether LOS occurred during hospitaliza-tion,neonates were divided into LOS group and non-LOS group.The LOS group was divided into 5 subgroups based on whether invasive procedures were performed:LOS plus umbilical vein catheter(UVC)group,LOS plus peripherally inserted central catheter(PICC)group,LOS plus sequential catheter group,LOS plus tracheal intuba-tion group,and LOS plus lumbar puncture group,the relationship between LOS and adverse prognosis was ana-lyzed.Results Among 2 945 neonates in NICU,354(12.02％)developed LOS.Comparison between LOS groups and non-LOS group were as follows:in term of perinatal condition of neonates,there were statistically significant difference in weight,gestational age,and whether they were twins between the two groups(all P＜0.001);in term of underlying diseases,there were statistically significant differences in the number of cases of maternal gestational hypertension,neonatal asphyxia,neonatal congenital heart disease,neonatal ventricular dilation,neonatal pneumo-nia,neonatal hyperthyrotropinemia,and neonatal anemia,as well as five invasive procedures between the two groups(all P＜0.05).Compared with the non-LOS group,the incidences of retinopathy of prematurity(ROP),neonatal necrotizing enterocolitis(NNEC),bronchopulmonary dysplasia(BPD),and neonatal respiratory distress syndrome(NRDS)in LOS group were all higher(all P＜0.001).Regression analysis showed that compared with the non-LOS groups,the risk of ROP increased in the LOS group and its subgroups,with the LOS plus sequential catheter group having a 2.27-fold higher risk of ROP than non-LOS group;the risk of NNEC increased in the LOS group and its subgroups,with the LOS plus UVC group having an 8.29-fold higher risk of NNEC than the non-LOS group.Except for the LOS plus UVC group,the risk of BPD increased in the LOS group and other subgroups,with the LOS plus PICC group and LOS plus sequential catheter group having 4.68-and 4.64-fold higher risk of BPD than the non-LOS group,respectively;the risk of NRDS in the LOS plus PICC group was 6.84-fold higher than the non-LOS group(all P＜0.05).The top three pathogens causing LOS were coagulase negative Staphylococcus,Klebsiella pneumoniae,and Escherichia coli.Conclusion LOS can significantly increase the risks of ROP,NNEC,BPD,and NRDS.LOS plus invasive procedures can further increase the risk of adverse prognosis.

Objective:To introduce the Sense of Body Boundaries Survey(SBBS),and examine the validity and reliability of the Chinese version among college students.Methods:A total of 701 college students were sur-veyed to test the construct validity and internal consistency reliability of the Chinese version of the SBBS.A total of 154 college students completed the criterion validity test of the Visual Analogue Scale Assessing Perceived Body Boundaries(VASAPBB),Psychological Boundary Questionnaire(PBQ),Chinese Body Shame Scale(CBSS),Self-liking/Self-competence Scale(SLCS)and Self-Objectification Beliefs and Behaviors Scale(SOBBS),and 117 of them were retested 4 weeks later for the test-retest reliability.Results:The Chinese version of the SBBS was demonstrated bifactor model.General factor was sense of body boundaries,and specific factors were sense of barrier and permeability.The bifactor model fit well with the data(x2/df=3.93,CFI=0.91,TLI=0.91,RMSEA=0.07,AIC=368.05,BIC=482.36).The score of the Chinese version of SBBS was positively correlated with the scores of VASAPBB,PBQ and SLCS(r=0.77,0.66,0.38,Ps＜0.001),negatively correlated with CBSS and SOBBS(r=-0.61,-0.56,Ps＜0.001).The Cronbach α of the Chinese version of SBBS was 0.94,and the test-retest reli-ability was 0.73.Conclusion:The Chinese version of the Sense of Body Boundaries Survey(SBBS)shows good validity and reliability among college students.

Objectives:To analyze the correlation between the the body shape index(ABSI)and all-cause mortality(ACM)as well as cardiovascular mortality(CVM)in patients with acute heart failure.Methods:This study analyzed data from the National Registration Study of Major Chronic Diseases,a prospective cohort on heart failure.A total of 4 907 patients with acute heart failure were enrolled from multiple centers nationwide,of which 4 375 were eligible for this study.The relationships of between body mass index(BMI),waist circumference,and ABSI with ACM and CVM were assessed using multivariable cox proportional hazards models.Results:The mean age of the patients was(65.0±13.4)years,62.3%was male.The median follow-up time was 4.6(4.59,4.65)years,there were 1 972(45.1%)ACM and 1 400(32.0%)CVM.Multivariable cox regression analysis showed that higher ABSI was associated with an increased risk of mortality.Compared to the second quartile of ABSI,the hazard ratio(HR)for the highest(fourth)quartile were 1.29(95%CI:1.14-1.46,P<0.05)for ACM and 1.23(95%CI:1.06-1.43,P<0.05)for CVM.In contrast,BMI and waist circumference were inversely associated with risks of both ACM and CVM.Conclusions:ABSI can more intuitively reflect the correlation between obesity and death in patients with heart failure than BMI and waist circumference,which has important clinical significance.

Objectives:To analyze the correlation between the the body shape index(ABSI)and all-cause mortality(ACM)as well as cardiovascular mortality(CVM)in patients with acute heart failure.Methods:This study analyzed data from the National Registration Study of Major Chronic Diseases,a prospective cohort on heart failure.A total of 4 907 patients with acute heart failure were enrolled from multiple centers nationwide,of which 4 375 were eligible for this study.The relationships of between body mass index(BMI),waist circumference,and ABSI with ACM and CVM were assessed using multivariable cox proportional hazards models.Results:The mean age of the patients was(65.0±13.4)years,62.3%was male.The median follow-up time was 4.6(4.59,4.65)years,there were 1 972(45.1%)ACM and 1 400(32.0%)CVM.Multivariable cox regression analysis showed that higher ABSI was associated with an increased risk of mortality.Compared to the second quartile of ABSI,the hazard ratio(HR)for the highest(fourth)quartile were 1.29(95%CI:1.14-1.46,P<0.05)for ACM and 1.23(95%CI:1.06-1.43,P<0.05)for CVM.In contrast,BMI and waist circumference were inversely associated with risks of both ACM and CVM.Conclusions:ABSI can more intuitively reflect the correlation between obesity and death in patients with heart failure than BMI and waist circumference,which has important clinical significance.

Objective:To introduce the Sense of Body Boundaries Survey(SBBS),and examine the validity and reliability of the Chinese version among college students.Methods:A total of 701 college students were sur-veyed to test the construct validity and internal consistency reliability of the Chinese version of the SBBS.A total of 154 college students completed the criterion validity test of the Visual Analogue Scale Assessing Perceived Body Boundaries(VASAPBB),Psychological Boundary Questionnaire(PBQ),Chinese Body Shame Scale(CBSS),Self-liking/Self-competence Scale(SLCS)and Self-Objectification Beliefs and Behaviors Scale(SOBBS),and 117 of them were retested 4 weeks later for the test-retest reliability.Results:The Chinese version of the SBBS was demonstrated bifactor model.General factor was sense of body boundaries,and specific factors were sense of barrier and permeability.The bifactor model fit well with the data(x2/df=3.93,CFI=0.91,TLI=0.91,RMSEA=0.07,AIC=368.05,BIC=482.36).The score of the Chinese version of SBBS was positively correlated with the scores of VASAPBB,PBQ and SLCS(r=0.77,0.66,0.38,Ps＜0.001),negatively correlated with CBSS and SOBBS(r=-0.61,-0.56,Ps＜0.001).The Cronbach α of the Chinese version of SBBS was 0.94,and the test-retest reli-ability was 0.73.Conclusion:The Chinese version of the Sense of Body Boundaries Survey(SBBS)shows good validity and reliability among college students.

The patient was admitted to the hospital with a diagnosis of diffuse large B-cell lymphoma for one month,accompanied by limb numbness for one week.Upon admission,the patient was initially prescribed vitamin B,and mecobalamin for symptomatic relief,which led to an improvement in the symptoms of limb numbness.Subsequently,the patient was administered chemotherapy consisting of rituximab,lenalidomide,and prednisone.However,following the initiation of chemotherapy,the symptoms of limb numbness became more severe.After review of the patient's medication history and analysis of relevant data,the clinical pharmacist suggested that the patient's limb numbness was caused by lenalidomide-induced peripheral neuropathy.

Objective:To analyze the main chemical components of Lanqin Granules based on UPLC-Q-TOF-MS/MS; To explore the potential targets, core components and related pathways of Lanqin Granules in the treatment of respiratory tract infection through network pharmacology.Methods:Using UPLC-Q-TOF-MS/MS secondary fragment cleavage information, combined with literature and database, the chemical components of Lanqin Granules were analyzed; the related action targets of Lanqin Granules were obtained by PharmMapper; The related targets of respiratory tract infection were obtained from GeneCards and OMIM databases, and the common targets were selected by intersection with the relevant action targets of Lanqin Granules. The common targets were imported into string database, and the protein interaction data were downloaded and input into Cytoscape 3.7.2 software to obtain hub gene; Go function and KEGG pathway enrichment analysis were carried out on DAVID platform, and chemical components closely related to hub gene were obtained by using the Network Anlyzer plug-in.Results:53 chemical constituents of Lanqin Granules were obtained, including 11 alkaloids, 20 flavonoids, 5 terpenoids, 7 organic esters, 2 amino acids and 8 other compounds. 28 hub genes and 38 related core components were obtained. The results of GO analysis showed that the treatment of respiratory tract infection with Lanqin Granules was related to neutrophil degranulation, negative regulation of apoptosis, protein hydrolysis and other biological processes; extracellular exosomes, cytoplasm, extracellular components and other cellular components; the same protein binding, RNA polymerase Ⅱtranscription factor activity, ligand activated sequence specific DNA binding, protein serine/ threonine/ tyrosine kinase activity and other molecular processes. KEGG analysis results mainly involved cancer pathway, lipid and atherosclerosis, metabolic pathway and other signaling pathways.Conclusion:Lanqin Granules can treat respiratory tract infection through multi-component, multi-target and multi-channel, and play the role of anti-inflammatory, antibacterial and anti-virus.

Cholera toxin B subunit(CTB)can enhance antigen presentation and promote T cell pro-liferation,B cell differentiation and B cell isotype conversion.Moreover,woodchuck hepatitis virus post transcriptional regulatory element(WPRE)can enhance gene expression efficiency by optimi-zing RNA polyadenylation,denuclearization and/or translation.In order to construct porcine epi-demic diarrhea virus like particles(VLPs)chimerized with CTB and WPRE and evaluate their im-munogenicity,the G Ⅱ type PEDV S gene,combined with the elements promoting the protein ex-pression and enhancing immune effects,was synthesized by the company and cloned into pET32a(+).Af-ter double enzyme digestion and gel recovery,the gene named as TSCW was cloned into pFastBacl to construct the recombinant plasmid pFastBac-TSCW.pFastBac-TSCW was further transformed into DH10Bac competent cells to obtain recombinant bacmid Bacmid-TSCW.Subsequently,the Bacmid-TSCW was transfected into sf9 cells to obtain recombinant baculovirus BV-TSCW.After co-infection of BV-TSCW and BV-M into sf9 cells,viral like particles VLP-TSCW was obtained and used to immunize mice to evaluate its immunogenicity.The results showed that the recombi-nant plasmid pFastBac-TSCW and bacmid Bacmid-TSCW were successfully constructed.After transfection of sf9 cells with recombinant baculovirus,significant cytopathic effects were observed.PCR and Western blot results showed that the recombinant baculoviruses existed stably in sf9 cells and the target proteins was also expressed stably.In addition,the electron microscopy results showed that BV-TSCW and BV-M successfully assembled into viral like particles VLP-TSCW.Furthermore,ELISA results indicated that VLP-TSCW induced high level specific antibodies.The above results laid the foundation for further optimization,design and development of PEDV VLPs subunit vaccines.