期刊文献+
共找到1,057篇文章
< 1 2 53 >
每页显示 20 50 100
The impact of COVID-19 on the birth rate in Nigeria:a report from population-based registries
1
作者 Charlotte Blanche Oguejiofor Kenechi Miracle Ebubechukwu +32 位作者 George Uchenna Eleje Emmanuel Onyebuchi Ugwu Joseph Tochukwu Enebe Kingsley Emeka Ekwuazi Chukwuemeka Chukwubuikem Okoro Boniface Chukwuneme Okpala Charles Chukwunomunso Okafor Nnanyelugo Chima Ezeora Emeka Ifeanyi Iloghalu Chidebe Christian Anikwe Chigozie Geoffrey Okafor Polycarp Uchenna Agu Emeka Philip Igbodike Iffiyeosuo Dennis Ake Arinze Anthony Onwuegbuna Osita Samuel Umeononihu Onyedika Promise Anaedu Odigonma Zinobia Ikpeze David Chibuike Ikwuka Henry Ifeanyi Nwaolisa Ekene Agatha Emeka Jude Ogechukwu Okoye Ihechinyerem Kelechi Osuagwu Angela Ogechukwu Ugwu Toochukwu Benjamin Ejikeme Eziamaka Pauline Ezenkwele Chijioke Ogomegbunam Ezeigwe Malarchy Ekwunife Nwankwo Gerald Okanandu Udigwe Joseph Ifeanyichukwu Ikechebelu Grace Agbaeze Chukwuebuka Divine Nwanja Ahizechukwu Chigoziem Eke 《Infectious Diseases Research》 2023年第1期14-18,共5页
Background and objectives:Coronavirus disease 2019(COVID-19)is a pandemic that has become a major source of morbidity and mortality worldwide,affecting the physical and mental health of individuals influencing reprodu... Background and objectives:Coronavirus disease 2019(COVID-19)is a pandemic that has become a major source of morbidity and mortality worldwide,affecting the physical and mental health of individuals influencing reproduction.Despite the threat,it poses to maternal health in sub-Saharan Africa and Nigeria,there is little or no data on the impact it has on fertility,conception,gestation and birth.To compare the birth rate between pre-COVID and COVID times using selected months of the year.Materials and methods:This was a secondary analysis of cross-sectional analytical study data from the birth registries of three tertiary hospitals,comparing two years[2019(Pre-COVID)]versus[2020(COVID era)]using three months of the year(October to December).The data relied upon was obtained from birth registries in three busy maternity clinics all within tertiary hospitals in South-East Nigeria and we aimed at discussing the potential impacts of COVID-19 on fertility in Nigeria.The secondary outcome measures were;mode of delivery,booking status of the participants,maternal age and occupation.Results:There was a significant decrease in tertiary-hospital based birth rate by 92 births(P=0.0009;95%CI:-16.0519 to-4.1481)among mothers in all the three hospitals in 2020 during the COVID period(post lockdown months)of October to December.There was a significant difference in the mode of delivery for mothers(P=0.0096)with a 95%confidence interval of 1.0664 to 1.5916,as more gave birth through vaginal delivery during the 2020 COVID-19 period than pre-COVID-19.Conclusion:Tertiary-hospital based birth rates were reduced during the pandemic.Our multi-centre study extrapolated on possible factors that may have played a role in this decline in their birth rate,which includes but is not limited to;decreased access to hospital care due to the total lockdowns/curfews and worsening inflation and economic recession in the country. 展开更多
关键词 birth rates COVID-19 lockdown NIGERIA PANDEMIC pre-COVID
下载PDF
Effect of Dual Trigger In Vitro Fertilization and Intracytoplasmic Sperm Injection During the Gonadotropin-releasing Hormone-Antagonist Cycle on Final Oocyte Maturation and Cumulative Live Birth Rate in Women with Diminished Ovarian Reserve
2
作者 Yu-meng REN Yan-bin WANG +4 位作者 Min FU Qiu-xiang ZHANG Huan SHEN Hong-jing HAN Fu-mei GAO 《Current Medical Science》 SCIE CAS 2022年第5期1066-1070,共5页
Objective It is well known that a dual trigger treatment can improve clinical outcomes of in vitro fertilization(IVF)in high or normal ovarian responders.However,it is not clear whether dual triggering also benefits p... Objective It is well known that a dual trigger treatment can improve clinical outcomes of in vitro fertilization(IVF)in high or normal ovarian responders.However,it is not clear whether dual triggering also benefits patients with diminished ovarian reserve(DOR).The aim of this study was to investigate whether a dual trigger treatment of gonadotropin-releasing hormone(GnRH)agonist combined with human chorionic gonadotropin(hCG)for final follicular maturation improves the cumulative live birth rate(CLBR)during the GnRH-antagonist cycle in patients with DOR.Methods This retrospective study included patients with DOR who received a GnRH-antagonist protocol during IVF and intracytoplasmic sperm injection(IVF-ICSI)cycles at Peking University People’s Hospital from January 1,2017 through December 31,2017.Oocyte maturation was triggered by GnRH combined with hCG(n=110)or hCG alone(n=71).Embryos were transferred on the third day after oocyte retrieval or during a subsequent freeze-thaw cycle.Patients were followed up for 3 years.Results The dual trigger treatment did not affect CLBR,which is an overall determinant of the success rate of assisted reproductive technology(ART).Women in the dual trigger group had significantly higher rates of fertilization than those in the hCG group(90.1%vs.83.9%,P=0.040).Conclusion Dual trigger with GnRH agonist and hCG did not improve CLBR in patients with DOR,but did slightly improve fertilization rate,oocyte count,and embryo quality. 展开更多
关键词 dual trigger gonadotropin releasing hormone antagonist protocols diminished ovarian reserve cumulative live birth rate
下载PDF
Cumulative live birth rates of in vitro fertilization/intracytoplasmic sperm injection after multiple complete cycles in China
3
作者 Lei Huang Qun Lu +16 位作者 Jiangbo Du Hong Lv Shiyao Tao Shiyao Chen Xiuzhu Li Xiumei Han Kun Zhou Bo Xu Xiaoyu Liu Hongxia Ma Yankai Xia Guangfu Jin Hongbing Shen Xiufeng Ling Zhibin Hu Jichun Tan Feiyang Diao 《The Journal of Biomedical Research》 CAS CSCD 2020年第5期361-368,I0002-I0006,共13页
There were few studies of cumulative live birth rates(CLBRs) based on multicenter reproductive clinical data from the general Chinese population.Here we report a retrospective cohort study,including 14 311 women with1... There were few studies of cumulative live birth rates(CLBRs) based on multicenter reproductive clinical data from the general Chinese population.Here we report a retrospective cohort study,including 14 311 women with17 315 cycles,in three reproductive centers to evaluate two estimated parameters of CLBRs with multiple transfer cycles of in vitro fertilization(IVF)/intracytoplasmic sperm injection(ICSI) in a Chinese population.We found that CLBRs were related to female age and endometrial thickness.By the fourth transfer cycle,the conservative and optimal estimates of CLBRs were 52.95% and 77.30% in women under 30 years of age,and 18.17% and26.51% in those 37 years of age or older,respectively.The two estimates were 44.70% and 63.15% in women with endometrial thickness more than 7 mm,and 32.05% and 46.18% in those with less than 7 mm,respectively.In addition,body mass index(BMI),duration of infertility,and infertility diagnoses may also be related to CLBRs on certain conditions.The findings from this study on CLBRs after multiple transfer cycles of IVF/ICSI treatment on different conditions in the Chinese population should be beneficial to both infertile couples and clinicians. 展开更多
关键词 cumulative live birth rate in vitro fertilization intracytoplasmic sperm injection
下载PDF
Urban Birth Rate Dips
4
《China Population Today》 2002年第Z1期21-22,共2页
关键词 Urban birth rate Dips DOWN
下载PDF
Decreasing Birth Rate Determining Worldwide Incidence and Regional Variation of Female Breast Cancer 被引量:1
5
作者 Wenpeng You Ian Symonds +1 位作者 Frank J. Rühli Maciej Henneberg 《Advances in Breast Cancer Research》 2018年第1期1-14,共14页
Purpose: Urbanization, obesity and ageing associated with lifestyle changes (Westernized diet patterns, pollution, physical inactivity) have been proposed as the major contributing factors for the global rise in breas... Purpose: Urbanization, obesity and ageing associated with lifestyle changes (Westernized diet patterns, pollution, physical inactivity) have been proposed as the major contributing factors for the global rise in breast cancer (BCa) and have been the variables used to predict the future breast cancer rate. At the same time, socio-economic level, instead of birth rate, has been proposed for explanation of dramatic regional variations of breast cancer incidence. We sought to determine which factor plays the determining role in predicting worldwide breast cancer incidence rates and regional variations. Methods: Bivariate correlation was conducted to examine the relationships between country-specific estimates of birth rate, BCa incidence, urbanization, overweight, ageing and GDP. Partial correlation was performed to identify the correlation between BCa incidence with each independent variable while we controlled the other four variables. Multiple linear regression was used to identify the most significant predictors of BCa incidence. Post hoc Scheff and independent T-Test analysis were performed to compare mean differences in BCa incidence rates and residuals of BCa standardised on birth rate in the WHO regions, and UN developed and developing regions respectively. Results: Worldwide, BCa incidence rate tends to increase while birth rate decreases and urbanization, overweight, ageing and GDP increase. However, birth rate was the only variable that had a significant correlation with BCa incidence when controlled for the other four variables. Birth rate was the only significant predictor of BCa incidence in regression analysis. Multiple mean differences of BCa incidence between regions were significant, but all disappeared when the contributing effect of birth rate on BCa incidence rate was removed. Conclusions: Birth rate plays a determining role in worldwide BCa incidence rate and regional variations. Current BCa projection methods may estimate future rates of BCa poorly if they fail to incorporate the impact of birth rate. 展开更多
关键词 Regional Variations HORMONES BREAST Cancer birth rate Mean Difference Comparison
下载PDF
Analysis of related factors affecting cumulative live birth rates of the first ovarian hyperstimulation in vitro fertilization or intracytoplasmic sperm injection cycle: a population-based study from 17,978 women in China 被引量:2
6
作者 Rui Yang Zi-Ru Niu +3 位作者 Li-Xue Chen Ping Liu Rong Li Jie Qiao 《Chinese Medical Journal》 SCIE CAS CSCD 2021年第12期1405-1415,共11页
Background:More and more scholars have called for the cumulative live birth rate(CLBR)of a complete ovarian stimulation cycle as a key indicator for assisted reproductive technology.This research aims to study the CLB... Background:More and more scholars have called for the cumulative live birth rate(CLBR)of a complete ovarian stimulation cycle as a key indicator for assisted reproductive technology.This research aims to study the CLBR of the first ovarian hyperstimulation cycles and analyze the related prognosis factors that might affect the CLBR.Methods:Our retrospective study included first in vitro fertilization or intracytoplasmic sperm injection(IVF/ICSI)cycles performed between January 2013 to December 2014.A total of 17,978 couples of first ovarian hyperstimulation IVF/ICSI cycles were included.The study was followed up for 4 years to observe the CLBR.The multivariable logistic regression model was used to analyze the prognosis factor,P value of<0.05 was considered statistically significant.Results:The cumulative pregnancy rate was 58.14%(10,452/17,978),and the CLBR was 49.66%(8928/17,978).The female age was younger in the live birth group when compared with the non-live birth group(30.81±4.05 vs.33.09±5.13,P<0.001).The average duration of infertility was shorter than the non-live birth cohort(4.22±3.11 vs.5.06±4.08,P<0.001).The preliminary gonadotropin used and the total number of gonadotropin used were lower in the live birth group when compared with the non-live birth group(both P<0.001).Meanwhile,the number of oocytes retrieved and transferrable embryos were both significantly higher in the live birth group(15.35±7.98 vs.11.35±7.60,P<0.001;6.66±5.19 vs.3.62±3.51,P<0.001,respectively).Conclusions:The women's age,body mass index,duration of infertility years,infertility factors,controlled ovarian hyperstimulation protocol,the number of acquired oocytes,and number of transferrable embryos are the prognosis factors that significantly affected the CLBR. 展开更多
关键词 Cumulative live birth rates IVF ICSI Controlled ovarian hyperstimulation In vitro fertilization Intracytoplasmic sperm injection
原文传递
Magnetic-activated cell sorting of nonapoptotic spermatozoa with a high DNA fragmentation index improves the live birth rate and decreases transfer cycles of IVF/ICSI 被引量:2
7
作者 Jie Mei Lin-Jun Chen +5 位作者 Xin-Xin Zhu Wen Yu Qing-Qiang Gao Hai-Xiang Sun Li-Jun Ding Jun-Xia Wang 《Asian Journal of Andrology》 SCIE CAS CSCD 2022年第4期367-372,共6页
The present study aimed to evaluate the clinical outcomes of magnetic-activated cell sorting(MACS)in sperm preparation for male subjects with a sperm DNA fragmentation index(DFI)≥30%.A total of 86 patients who had un... The present study aimed to evaluate the clinical outcomes of magnetic-activated cell sorting(MACS)in sperm preparation for male subjects with a sperm DNA fragmentation index(DFI)≥30%.A total of 86 patients who had undergone their first long-term long protocol were selected.The protocol involved in vitro fertilization(IVF)and intracytoplasmic sperm injection(ICSI)cycles,and the patients were divided into the MACS or control groups.The MACS group included sperm samples analyzed with MACS that were combined with density gradient centrifugation(DGC)and the swim-up(SU)technique(n=39),and the control group included sperm samples prepared using standard techniques(DGC and SU;n=41).No differences were noted with regard to basic clinical characteristics,number of oocytes retrieved,normal fertilization rate,cleavage rate,or transplantable embryo rate between the two groups in IVF/ICSI.In addition,the clinical pregnancy and implantation rates of the first embryo transfer cycles indicated no significant differences between the two groups.However,there was a tendency to improve the live birth rate(LBR)of the first embryo transfer cycle(63.2%vs 53.9%)and the cumulative LBR(79.5%vs 70.7%)in the MACS group compared with the control group.Moreover,the number of transferred embryos(mean±standard deviation[s.d.]:1.7±0.7 vs 2.3±1.6)and the transfer number of each retrieved cycle(mean±s.d.:1.2±0.5 vs 1.6±0.8)were significantly lower in the MACS group than those in the control group.Thus,the selection of nonapoptotic spermatozoa by MACS for higher sperm DFI could improve assisted reproductive clinical outcomes. 展开更多
关键词 cumulative live birth rate fertility rate intracytoplasmic sperm injection sperm DNA fragmentation index sperm DNA integrity
原文传递
Prediction of Cumulative Live Birth Rate in Women Aged 40 Years and Over Undergoing In vitro Fertilization/Intracytoplasmic Sperm Injection 被引量:2
8
作者 Jia Lei Chen Pan-Yu +4 位作者 Guo Ying-Chun Zhang Zhi-Qiang Gong Xiao Chen Jing-Bo Fang Cong 《Reproductive and Developmental Medicine》 CSCD 2020年第4期233-238,共6页
Objective:To investigate cumulative live birth rate (cLBR) per oocyte retrieval in infertile patients aged 40 years and over undergoing their first in vitro fertilization/intracytoplasmic sperm injection cycles and to... Objective:To investigate cumulative live birth rate (cLBR) per oocyte retrieval in infertile patients aged 40 years and over undergoing their first in vitro fertilization/intracytoplasmic sperm injection cycles and to identify the possible predictors.Methods:A total of 1,613 patients at a university hospital in China from January 2013 to May 2017 were enrolled in this retrospective study.All data for fresh and subsequent frozen-thawed cycles were analyzed.Multivariate logistic regression analysis with stepwise selection of possible predictors for cLBR was performed,and Loess curve was constructed to determine the association between cLBR and the number of oocytes retrieved.Results:cLBR significantly increased with the number of oocytes retrieved and reached up to 75% when > 20 oocytes were retrieved (P<0.001).Variables of antral follicle count (AFC) and the number of oocytes retrieved were selected using multiple logistic regression analysis with stepwise selection to predict the significance of cLBR.cLBR demonstrated an obvious upward trend as the number of oocytes retrieval increased in the Loess curve.Conclusions:For patients aged 40 years and over,AFC and the number of oocytes retrieved were two key predictors for cLBR and maximization of ovarian reserve exploitation was pivotal to increase the chance of live birth. 展开更多
关键词 Advanced Maternal Age Cumulative Live birth rate In vitro Fertilization Number of Oocytes Retrieved
原文传递
TWO TYPES OF CONDITION FOR THE GLOBAL STABILITY OF DELAYED SIS EPIDEMIC MODELS WITH NONLINEAR BIRTH RATE AND DISEASE INDUCED DEATH RATE
9
作者 YUKIHIKO NAKATA YOICHI ENATSU YOSHIAKI MUROYA 《International Journal of Biomathematics》 2012年第1期127-155,共29页
We study global asymptotic stability for an SIS epidemic model with maturation delay proposed by K. Cooke, P. van den Driessche and X. Zou, Interaction of maturation delay and nonlinear birth in population and epidemi... We study global asymptotic stability for an SIS epidemic model with maturation delay proposed by K. Cooke, P. van den Driessche and X. Zou, Interaction of maturation delay and nonlinear birth in population and epidemic models, J. Math. Biol. 39(4) (1999) 332-352. It is assumed that the population has a nonlinear birth term and disease causes death of infective individuals. By using a monotone iterative method, we establish sufficient conditions for the global stability of an endemic equilibrium when it exists dependently on the monotone property of the birth rate function. Based on the analysis, we further study the model with two specific birth rate functions BI(N) = be-aN and B3(N) = A/N + c, where N denotes the total population. For each model, we obtain the disease induced death rate which guarantees the global stability of the endemic equilibrium and this gives a positive answer for an open problem by X. Q. Zhao and X. Zou, Threshold dynamics in a delayed SIS epidemic model, J. Math. Anal. Appl. 257(2) (2001) 282-291. 展开更多
关键词 SIS epidemic models nonlinear birth rate function disease induced deathrate global asymptotic stability the basic reproduction number permanence.
原文传递
Low Birth Rate and Women's Health
10
作者 SU JI 《Women of China》 1998年第9期8-9,共2页
CHINA has achieved remarkable results in birth control since adopting a basic state policy of family planning to control the birth rate and increase the population quality. According to the "1997 Statistic Bullet... CHINA has achieved remarkable results in birth control since adopting a basic state policy of family planning to control the birth rate and increase the population quality. According to the "1997 Statistic Bulletin for National Economy and Social Development," a document recently issued by the State Statistics Bureau, China maintained a low birth rate of 16.57 per thousand in 1997—a natural population growth of one percent. Women of child-bearing age now average about two births each, a decrease from six in 1970. 展开更多
关键词 Low birth rate and Women’s Health
原文传递
An SIRS Epidemic Model with Pulse Vaccination, Birth Pulse and Logistic Death Rate
11
作者 GAO JIAN-ZHONG ZHANG TAI-LEI 《Communications in Mathematical Research》 CSCD 2019年第3期247-263,共17页
In this paper, we propose an SIRS epidemic model with pulse vaccination, birth pulse and Logistic death rate. By using the stroboscopic map of a discrete dynamical system, the disease-free periodic solution (DFPS for ... In this paper, we propose an SIRS epidemic model with pulse vaccination, birth pulse and Logistic death rate. By using the stroboscopic map of a discrete dynamical system, the disease-free periodic solution (DFPS for short) of the model under pulse vaccination and birth pulse is obtained. Based on the Floquet theory and comparison theorem of impulsive differential equations, the global asymptotic stability of the DFPS is given, and sufficient conditions for the permanence of the model are obtained. In addition, numerical simulations are done to confirm our theoretical results. 展开更多
关键词 LOGISTIC DEATH rate birth PULSE THRESHOLD value global stability PERMANENCE
下载PDF
不同治疗方案对卵巢储备功能正常年轻女性夫精人工授精妊娠结局的影响 被引量:1
12
作者 贺玲 黄永汉 林静 《生殖医学杂志》 CAS 2024年第1期42-48,共7页
目的探讨不同治疗方案对年龄<35岁卵巢储备功能正常女性夫精人工授精(AIH)妊娠结局的影响。方法回顾性分析2015年1月至2021年8月在本中心行AIH助孕的年龄<35岁卵巢储备功能正常女性的3024个周期的临床资料。根据治疗方案分为6组:... 目的探讨不同治疗方案对年龄<35岁卵巢储备功能正常女性夫精人工授精(AIH)妊娠结局的影响。方法回顾性分析2015年1月至2021年8月在本中心行AIH助孕的年龄<35岁卵巢储备功能正常女性的3024个周期的临床资料。根据治疗方案分为6组:自然周期组(NC组,n=380)、克罗米芬组(CC组,n=57)、CC联合促性腺激素(Gn)组(CC+Gn组,n=78)、Gn组(n=1712)、来曲唑组(LE组,n=430)以及LE联合Gn(LE+Gn组,n=367),比较各组患者的一般情况和妊娠结局,并采用多因素Logistic回归分析影响AIH临床妊娠率及活产率的相关因素。结果一般情况比较:6组间体质量指数(BMI)、窦卵泡数(AFC)、基础卵泡刺激素(FSH)水平、优势卵泡数、不孕因素整体比较有统计学差异(P<0.05),而女方年龄、不孕年限、不孕类型及精液处理方式比较均无统计学差异(P>0.05)。妊娠结局比较:6组患者间临床妊娠率和活产率整体比较有统计学差异(P<0.05),其中LE+Gn组的临床妊娠率和活产率显著高于NC组(分别为20.7%vs.9.5%;16.3%vs.7.4%)(P<0.05);6组间流产率、异位妊娠率及多胎率比较无统计学差异(P>0.05)。多因素Logistic回归分析结果显示,矫正混杂因素后,LE+Gn治疗方案和优势卵泡数均是临床妊娠和活产的保护因素(OR>1,P<0.05),而不孕年限是临床妊娠和活产的危险因素(OR<1,P<0.05)。结论LE联合Gn方案可显著提高AIH的临床妊娠率和活产率,可作为年龄<35岁卵巢储备功能正常女性AIH助孕的首选治疗方案。 展开更多
关键词 宫腔内人工授精 治疗方案 年轻女性 临床妊娠率 活产率
下载PDF
托育服务补助制度:理论逻辑与可行性分析 被引量:2
13
作者 何文炯 张雪 《北京行政学院学报》 北大核心 2024年第1期84-95,共12页
儿童照顾服务具有公共产品属性和社会投资属性,儿童照顾的责任和成本应当由家庭和国家共同承担。在家庭照顾资源减少、托育服务供给有限、养育成本高企的背景下,国家应当建立托育服务补助制度,以降低家庭照顾儿童的成本,并增加有效需求... 儿童照顾服务具有公共产品属性和社会投资属性,儿童照顾的责任和成本应当由家庭和国家共同承担。在家庭照顾资源减少、托育服务供给有限、养育成本高企的背景下,国家应当建立托育服务补助制度,以降低家庭照顾儿童的成本,并增加有效需求以促进社会化托育服务发展。通过建立适合于全国和各地的估算模型,基于对未来0~2岁婴幼儿人口的预测和适度补助标准,估算2024—2035年托育服务补助制度的财政资金规模发现,这项制度的财务成本可以承受。为此,建议政府积极创造条件尽快实行这项制度,同时健全人口动态监测系统,采用多种补助形式,实行托育服务补助申请制,加强补助资金监管和引导。 展开更多
关键词 托育服务 托育服务补助 人口出生率 财务成本
下载PDF
生育率回升的公共政策:约束、激励和扶持 被引量:3
14
作者 王金营 张龙飞 《人口与发展》 北大核心 2024年第1期2-12,共11页
低生育问题成为中国未来面临的社会难题,为了治理低生育率问题,中央政府先后出台了“单独二孩”“全面两孩”和三孩政策,各地政府积极跟进,但收效甚微。如何才能够使生育率得到回升呢?由于生育是关乎亿万家庭和国家发展的大事,既是个体... 低生育问题成为中国未来面临的社会难题,为了治理低生育率问题,中央政府先后出台了“单独二孩”“全面两孩”和三孩政策,各地政府积极跟进,但收效甚微。如何才能够使生育率得到回升呢?由于生育是关乎亿万家庭和国家发展的大事,既是个体民生又是国家兴衰、民族复兴的公共性事务,生育问题也就成为具有公共性的问题。通过梳理国内外应对低生育率的公共政策实践经验,总结分析当前我国推升生育率政策效果不佳的原因。基于公共政策视域研究认为,需要通过制度、文化的建构和形塑,在约束不生“源头”的基础之上与“激励”和“扶持”个体生育需求相结合,系统性多维度协同促进生育率回升到适度水平。 展开更多
关键词 低生育率 生育政策 生育意愿
下载PDF
卵巢功能减退患者多周期累积与非累积胚胎移植临床结局比较
15
作者 王宇维 王聪 +1 位作者 方颖 杨晓葵 《武警医学》 CAS 2024年第4期307-311,共5页
目的探讨卵巢功能减退(DOR)患者多周期累积与非累积胚胎移植体外受精-胚胎移植(IVF-ET)临床结局的差异。方法回顾性分析2019-01至2022-12于首都医科大学附属北京妇产医院生殖医学科进行IVF-ET治疗的卵巢储备功能减退的不孕患者174例的... 目的探讨卵巢功能减退(DOR)患者多周期累积与非累积胚胎移植体外受精-胚胎移植(IVF-ET)临床结局的差异。方法回顾性分析2019-01至2022-12于首都医科大学附属北京妇产医院生殖医学科进行IVF-ET治疗的卵巢储备功能减退的不孕患者174例的临床资料,纳入患者均已完成所有胚胎移植及最终随访。收集患者的基础内分泌、抗苗勒管激素水平及窦卵泡计数,记录促排卵治疗后的卵巢反应参数及妊娠结局等相关临床资料,比较多周期累积胚胎移植(累积组)与非累积胚胎移植(非累积组)两种IVF-ET治疗的临床结局。结果DOR患者多周期累积胚胎移植与非累积胚胎移植两组间的累积妊娠率(35.24%vs.27.54%)、早期流产率(32.43%vs.26.32%)及累积活产率(21.90%vs.18.84%)差异无统计学意义(P>0.05);纳入移植策略、BMI、首次取卵年龄、AMH、胚胎移植数、优质胚胎移植数、累积获卵数等多个因素后进行logistic回归分析,两种不同的胚胎移植策略(OR=1.522,95%CI 0.608~3.814)对活产无明显影响(P>0.05)。结论对于DOR患者,进行多周期重复取卵后的累积胚胎移植并不能提高患者的累积妊娠率及活产率。 展开更多
关键词 卵巢功能减退 累积胚胎移植 多周期累积活产率
下载PDF
北京妇产医院围产期孕妇B族链球菌感染及妊娠结局的概况分析
16
作者 朱宏远 曹妍 +3 位作者 王殊 谢杰施 翟燕红 曹正 《标记免疫分析与临床》 CAS 2024年第9期1589-1592,1599,共5页
目的分析在北京妇产医院就诊的围产期孕妇B族链球菌(GBS)感染以及妊娠结局新生儿受累感染的概况。方法收集2022年1月至2024年3月在我院就诊的围产期孕妇26351例,新生儿2015例,对其进行B族链球菌核酸检测分析。结果在26351例围产期孕妇中... 目的分析在北京妇产医院就诊的围产期孕妇B族链球菌(GBS)感染以及妊娠结局新生儿受累感染的概况。方法收集2022年1月至2024年3月在我院就诊的围产期孕妇26351例,新生儿2015例,对其进行B族链球菌核酸检测分析。结果在26351例围产期孕妇中,有2906例为GBS阳性感染者,感染率为11.03%。其中18~24岁孕妇GBS感染率为10.70%,25~35岁孕妇GBS感染率为11.22%,36~45岁孕妇GBS感染率为10.35%,46~52岁孕妇GBS感染率为13.33%,4组年龄段B族链球菌感染率差异无统计学意义(P>0.05);根据季节分组发现春季围产期孕妇GBS感染率为10.41%,夏季孕妇GBS感染率为11.51%,秋季孕妇GBS感染率为11.83%,冬季孕妇GBS感染率为10.74%,围产期孕妇B族链球菌在不同季节的感染率差异存在统计学意义(P<0.05)。在2015例新生儿中,有124例为B族链球菌阳性感染者,感染率为6.15%;B族链球菌阳性感染孕妇中正常新生儿913例(45.31%)、不良妊娠结局1102例(54.69%),包括新生儿早产715例(53.48%)、新生儿感染108例(5.36%)、新生儿呼吸困难99例(4.91%)、胎膜早破116例(5.7%)、新生儿宫内窘迫11例(0.55%)、新生儿低血糖13例(0.65%)、新生儿代谢性酸中毒2例(0.1%)。结论北京地区围产期孕妇B族链球菌感染率为11.03%,其中以46岁至52岁年龄段感染率最高(13.33%),夏秋季节孕妇GBS感染高发,GBS阳性感染孕妇娩出新生儿的GBS感染率为6.15%,不良妊娠结局中以新生儿早产发生率最高(53.48%)。通过本研究为临床对于围产期孕妇B族链球菌感染的概况、诊疗、预防、把控妊娠结局提供可靠的数据支持。 展开更多
关键词 围产期 B族链球菌感染 新生儿感染 早产 感染率
下载PDF
低出生率背景下省域学前教育资源供需关系与动态调配——基于对中部J省人口预测的分析
17
作者 冯婉桢 袁一清 伍津 《学前教育研究》 北大核心 2024年第5期45-57,共13页
低出生率背景下研判省域学前教育资源供需关系的变化,对优化学前教育资源配置、实现学前教育优质均衡发展具有指导意义。本研究选择省域学前教育资源配置中低供给高需求类型的中部J省作为研究对象,运用PADIS-INT软件预测分析了J省2023—... 低出生率背景下研判省域学前教育资源供需关系的变化,对优化学前教育资源配置、实现学前教育优质均衡发展具有指导意义。本研究选择省域学前教育资源配置中低供给高需求类型的中部J省作为研究对象,运用PADIS-INT软件预测分析了J省2023—2035年低、中、高三种方案下城乡在园幼儿人数的变化,调查了J省学前教育人力资源与物力资源供给现状,进而预测分析了J省学前教育资源在供给动态变化与静态不变情况下的供需关系。结果发现,随着在园幼儿人数减少,学前教育资源需求将明显减少;现有人力资源供给存在结构性短缺,未来会出现城乡配置失衡;物力资源配备已达到高水平,未来会严重过剩。根据研究结果,建议地方政府根据资源供需关系的动态变化做好学前教育长期规划,控增量、调存量、疏余量;从结构与质量入手优化人力资源配置,稳定乡村教师队伍;谨慎增加办园条件投入,采用多种形式提升物力资源使用效益。 展开更多
关键词 学前教育资源 供需关系 低出生率 动态调配
下载PDF
一类具有非线性出生率和饱和恢复率的随机SEIR传染病模型的动力学行为
18
作者 陈丽君 《安徽师范大学学报(自然科学版)》 2024年第3期201-210,共10页
研究了一类具有非线性出生率和非线性接触率的随机SEIR传染病模型的绝灭性、持久性与平稳分布问题。同时利用计算机数值模拟验证了所得结论。本文所得结果改进了相关文献的结论。
关键词 非线性出生率 非线性接触率 平衡点
下载PDF
计生协参与应对“少子老龄化”研究
19
作者 崔树义 续莹 《晋阳学刊》 2024年第3期26-33,共8页
“少子老龄化”是当前中国人口发展的主要特征,积极应对“少子老龄化”是中国式现代化建设面临的一个重大任务。在人口发展新形势下,要成功应对“少子老龄化”问题,必须加强政府和社会协同治理,充分发挥群团组织等社会力量的作用。计划... “少子老龄化”是当前中国人口发展的主要特征,积极应对“少子老龄化”是中国式现代化建设面临的一个重大任务。在人口发展新形势下,要成功应对“少子老龄化”问题,必须加强政府和社会协同治理,充分发挥群团组织等社会力量的作用。计划生育协会作为人口领域最大的群团组织,在参与应对“少子老龄化”方面具有得天独厚的政治优势、群团优势、组织网络优势、人才和专业优势、工作方法优势以及资源优势,可通过开展宣传教育、建设新型婚育文化,加强优生优育指导、积极参与托育服务,强化家庭健康指导服务、积极参与养老服务等途径,在应对“少子老龄化”问题中发挥重要作用。 展开更多
关键词 计划生育协会 少子老龄化 新型婚育文化 托育服务 养老服务
下载PDF
老幼共融:日本老幼共生服务模式建构经验与启示
20
作者 胥兴春 蒋雨竹 《陕西学前师范学院学报》 2024年第8期1-7,共7页
老龄化以及少子化问题给日本带来了经济增长速度放缓、社会保障负担加重、养老托育压力增大等挑战。为了应对这些挑战,日本大力推动老幼共生服务模式发展,探索出了一条养老托育共生的新路径。鉴于我国与日本同处于东亚地区且文化具有相... 老龄化以及少子化问题给日本带来了经济增长速度放缓、社会保障负担加重、养老托育压力增大等挑战。为了应对这些挑战,日本大力推动老幼共生服务模式发展,探索出了一条养老托育共生的新路径。鉴于我国与日本同处于东亚地区且文化具有相似性,梳理总结日本老幼共生服务模式的空间布局、服务内容、实践效果和人才支持等实践经验,可为我国建设社区老幼共融新模式提供有益借鉴。 展开更多
关键词 少子老龄化 老幼共融 共生服务 养老托育 日本
下载PDF
上一页 1 2 53 下一页 到第
使用帮助 返回顶部