Jianmeng Liu
Biographic Data
| ID | 5472016 |
|---|---|
| NAME | Jianmeng Liu |
| GIVEN NAMES | Jianmeng |
| FAMILY NAME | Liu |
| SIGNATURE | LIU J |
| AFFILIATIONS | Peking University |
| ORCID | 0000-0002-3220-6084 |
| VERIFIED | Yes |
| TOTAL WORKS | 14 |
| TOTAL CITATIONS | 4 |
| AUTHOR COUNT | 14 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2007 |
| LATEST PUBLICATION YEAR | 2023 |
| H-INDEX | 1 |
Association of maternal age with adverse pregnancy outcomes
Background: Although maternal age might affect pregnancy outcomes, it remains unclear whether this relationship is linear or curvilinear and if it differs between nulliparous and multiparous women. We aimed to characterize the relationship between maternal age and risks of pregnancy outcomes in a diverse sample of Chinese singleton pregnant women and to evaluate whether the relationship varied by parity. Methods: We based this prospective multice…
Hospital variations in caesarean delivery rates
Background: The impact of China's use of caesarean delivery on global public health has been a long-term concern. The number of private hospitals is increasing in China and likely driving up caesarean delivery rates, yet specifics remain unknown. We aimed to investigate variations in caesarean delivery rates across and within hospital types in China. Methods: We retrieved data on hospital characteristics and national hospital-level annually aggre…
Cesarean delivery on maternal request and common child health outcomes
Background: Cesarean delivery vs vaginal delivery was reported to increase the risks of childhood obesity, pneumonia, anemia, and neurobehavioral disorders, but few studies were able to deal with the confounding biases associated with medical conditions indicating cesareans. This prospective cohort study aims to investigate the associations of non-medically indicated cesarean delivery on maternal request (CDMR) with these child health outcomes. M…
Gestational Diabetes Mellitus as an Effect Modifier of the Association of Gestational Weight Gain with Perinatal Outcomes
The association of gestational weight gain (GWG) with perinatal outcomes seems to differ between women with and without gestational diabetes mellitus (GDM). Whether GDM is an effect-modifier of the association has not been verified. This study aimed to assess the modifying effect of GDM on the association of GWG with perinatal outcomes. Data on 12,128 pregnant women (3013 with GDM and 9115 without GDM) were extracted from a prospective, multicent…
Effects of prenatal micronutrients supplementation timing on pregnancy‐induced hypertension
In this secondary analysis of data from a double-blind randomized controlled trial (clinicaltrials.gov identifier: NCT00133744) of micronutrient supplementation (multiple micronutrients [MMN], iron-folic acid [IFA] and folic acid [FA] alone), we examined the potential modifying effect of gestational age at enrolment on the association of antenatal supplementation and pregnancy-induced hypertension (PIH). We included 18,775 nulliparous pregnant wo…
Demographic variations and temporal trends in prenatal use of multiple micronutrient supplements in Beijing, 2013–2017
Objective: To provide updated information about demographic variations and temporal trends in the prenatal use of multiple micronutrient (MMN) supplements in the metropolitan areas of China. Design: Descriptive analysis of routine prenatal healthcare data between 2013 and 2017. Setting: Chaoyang District, Beijing, China. Participants: A total of 197 346 pregnant women who attended their first prenatal care visit and provided information about MMN…
Folic acid supplementation and risk for congenital hydrocephalus in China
Objective: We examined whether folic acid (FA) supplementation prevented congenital hydrocephalus (CH) in more than 200 000 births in China. Design: A large population-based cohort study. Setting: All births at 20 complete gestational weeks, including live births, stillbirths and pregnancy terminations, and all structural birth defects regardless of gestational week were recorded. The prevalence of births with CH was classified by maternal charac…
Association between gestational weight gain and exclusive breast-feeding for the first 6 months postpartum in Chinese women
Objective The association between gestational weight gain (GWG) and exclusive breast-feeding (EBF) practices remains unclear. The present study evaluated the association between GWG and EBF in the first 6 months postpartum among primiparas in rural China. Design The study population was drawn from a previous randomized controlled trial, and the relevant data were obtained from an electronic, population-based perinatal system and a monitoring syst…
The Rates and Medical Necessity of Cesarean Delivery in the Era of the Two-Child Policy in Hubei and Gansu Provinces, China
Objectives. To describe the cesarean rates in different child policy periods and assess the medical necessity of cesareans during the 2-child policy period. Methods. We collected hospital-level aggregate data on 93 745 deliveries and individual-level data on 27 977 deliveries from 6 hospitals in the Hubei and Gansu provinces of China from 2013 to 2016. Experts in gynecology and obstetrics assessed the medical necessity of 1024 randomly selected c…
Partner cigarette smoking and risk of neural tube defects among infants of non-smoking women in northern China
Peri-conceptional exposure to partner smoking may increase the risk of NTDs in the offspring of Chinese non-smoking women
Prevalence of hyperhomocysteinaemia in a Chinese elderly population
Objective To evaluate plasma homocysteine (Hcy) levels and prevalence rates of hyperhomocysteinaemia (HHCY) in elderly Chinese individuals. Design A cross-sectional study. Setting The study was conducted in 2006 in two counties from the north and the south of China. Subjects A total of 810 individuals aged 65–74 years were recruited. Demographic characteristics and lifestyle factors were assessed through questionnaire interviews and physical exam…
Prevalence of anaemia among pregnant women in south-east China, 1993–2005
Objective To report the prevalence of anaemia by demographic characteristics and its secular trend over 13 years for south-east Chinese pregnant women, and to determine the focus of anaemia prevention in Chinese pregnant women. Design Prospective study of the data on Hb concentration and other demographic information from a large-scale population-based perinatal health surveillance system in south-east China. Setting Fourteen cities or counties i…
Association of Education and the Occurrence of Low Birthweight in Rural Southern China During the Early and Late 1990s
Objectives. We examined whether education-related inequalities were associated with the occurrence of low birthweight in 6 counties in southern China in the early and late 1990s. Methods. The study population consisted of 111181 women (65669 in the early 1990s and 45482 in the late 1990s) in a population-based Perinatal Health Care Surveillance System. We used the χ 2 test, logistic regression, and concentration index for our analyses. Results. F…
Periconceptional use of folic acid in Shanxi Province of northern China
Objective To understand the periconceptional use of folic acid and its association with selected characteristics in northern China. Design As part of a population-based case–control study on external structural birth defects, we analysed periconceptional use of folic acid among control mothers. Setting The study was conducted in four counties (Pingding, Xiyang, Taigu and Zezhou) in Shanxi Province of northern China. Subjects The subjects in this …
Association of Education and the Occurrence of Low Birthweight in Rural Southern China During the Early and Late 1990s
Objectives. We examined whether education-related inequalities were associated with the occurrence of low birthweight in 6 counties in southern China in the early and late 1990s. Methods. The study population consisted of 111181 women (65669 in the early 1990s and 45482 in the late 1990s) in a population-based Perinatal Health Care Surveillance System. We used the χ 2 test, logistic regression, and concentration index for our analyses. Results. F…
Periconceptional use of folic acid in Shanxi Province of northern China
Objective To understand the periconceptional use of folic acid and its association with selected characteristics in northern China. Design As part of a population-based case–control study on external structural birth defects, we analysed periconceptional use of folic acid among control mothers. Setting The study was conducted in four counties (Pingding, Xiyang, Taigu and Zezhou) in Shanxi Province of northern China. Subjects The subjects in this …
Association of Education and the Occurrence of Low Birthweight in Rural Southern China During the Early and Late 1990s
Objectives. We examined whether education-related inequalities were associated with the occurrence of low birthweight in 6 counties in southern China in the early and late 1990s. Methods. The study population consisted of 111181 women (65669 in the early 1990s and 45482 in the late 1990s) in a population-based Perinatal Health Care Surveillance System. We used the χ 2 test, logistic regression, and concentration index for our analyses. Results. F…
Prevalence of hyperhomocysteinaemia in a Chinese elderly population
Objective To evaluate plasma homocysteine (Hcy) levels and prevalence rates of hyperhomocysteinaemia (HHCY) in elderly Chinese individuals. Design A cross-sectional study. Setting The study was conducted in 2006 in two counties from the north and the south of China. Subjects A total of 810 individuals aged 65–74 years were recruited. Demographic characteristics and lifestyle factors were assessed through questionnaire interviews and physical exam…
Prevalence of anaemia among pregnant women in south-east China, 1993–2005
Objective To report the prevalence of anaemia by demographic characteristics and its secular trend over 13 years for south-east Chinese pregnant women, and to determine the focus of anaemia prevention in Chinese pregnant women. Design Prospective study of the data on Hb concentration and other demographic information from a large-scale population-based perinatal health surveillance system in south-east China. Setting Fourteen cities or counties i…
Partner cigarette smoking and risk of neural tube defects among infants of non-smoking women in northern China
Peri-conceptional exposure to partner smoking may increase the risk of NTDs in the offspring of Chinese non-smoking women
Association between gestational weight gain and exclusive breast-feeding for the first 6 months postpartum in Chinese women
Objective The association between gestational weight gain (GWG) and exclusive breast-feeding (EBF) practices remains unclear. The present study evaluated the association between GWG and EBF in the first 6 months postpartum among primiparas in rural China. Design The study population was drawn from a previous randomized controlled trial, and the relevant data were obtained from an electronic, population-based perinatal system and a monitoring syst…
The Rates and Medical Necessity of Cesarean Delivery in the Era of the Two-Child Policy in Hubei and Gansu Provinces, China
Objectives. To describe the cesarean rates in different child policy periods and assess the medical necessity of cesareans during the 2-child policy period. Methods. We collected hospital-level aggregate data on 93 745 deliveries and individual-level data on 27 977 deliveries from 6 hospitals in the Hubei and Gansu provinces of China from 2013 to 2016. Experts in gynecology and obstetrics assessed the medical necessity of 1024 randomly selected c…
Effects of prenatal micronutrients supplementation timing on pregnancy‐induced hypertension
In this secondary analysis of data from a double-blind randomized controlled trial (clinicaltrials.gov identifier: NCT00133744) of micronutrient supplementation (multiple micronutrients [MMN], iron-folic acid [IFA] and folic acid [FA] alone), we examined the potential modifying effect of gestational age at enrolment on the association of antenatal supplementation and pregnancy-induced hypertension (PIH). We included 18,775 nulliparous pregnant wo…
Demographic variations and temporal trends in prenatal use of multiple micronutrient supplements in Beijing, 2013–2017
Objective: To provide updated information about demographic variations and temporal trends in the prenatal use of multiple micronutrient (MMN) supplements in the metropolitan areas of China. Design: Descriptive analysis of routine prenatal healthcare data between 2013 and 2017. Setting: Chaoyang District, Beijing, China. Participants: A total of 197 346 pregnant women who attended their first prenatal care visit and provided information about MMN…
Folic acid supplementation and risk for congenital hydrocephalus in China
Objective: We examined whether folic acid (FA) supplementation prevented congenital hydrocephalus (CH) in more than 200 000 births in China. Design: A large population-based cohort study. Setting: All births at 20 complete gestational weeks, including live births, stillbirths and pregnancy terminations, and all structural birth defects regardless of gestational week were recorded. The prevalence of births with CH was classified by maternal charac…
Cesarean delivery on maternal request and common child health outcomes
Background: Cesarean delivery vs vaginal delivery was reported to increase the risks of childhood obesity, pneumonia, anemia, and neurobehavioral disorders, but few studies were able to deal with the confounding biases associated with medical conditions indicating cesareans. This prospective cohort study aims to investigate the associations of non-medically indicated cesarean delivery on maternal request (CDMR) with these child health outcomes. M…
Gestational Diabetes Mellitus as an Effect Modifier of the Association of Gestational Weight Gain with Perinatal Outcomes
The association of gestational weight gain (GWG) with perinatal outcomes seems to differ between women with and without gestational diabetes mellitus (GDM). Whether GDM is an effect-modifier of the association has not been verified. This study aimed to assess the modifying effect of GDM on the association of GWG with perinatal outcomes. Data on 12,128 pregnant women (3013 with GDM and 9115 without GDM) were extracted from a prospective, multicent…
Association of maternal age with adverse pregnancy outcomes
Background: Although maternal age might affect pregnancy outcomes, it remains unclear whether this relationship is linear or curvilinear and if it differs between nulliparous and multiparous women. We aimed to characterize the relationship between maternal age and risks of pregnancy outcomes in a diverse sample of Chinese singleton pregnant women and to evaluate whether the relationship varied by parity. Methods: We based this prospective multice…
Hospital variations in caesarean delivery rates
Background: The impact of China's use of caesarean delivery on global public health has been a long-term concern. The number of private hospitals is increasing in China and likely driving up caesarean delivery rates, yet specifics remain unknown. We aimed to investigate variations in caesarean delivery rates across and within hospital types in China. Methods: We retrieved data on hospital characteristics and national hospital-level annually aggre…
Medicine (14 works) · Pregnancy (10 works) · Internal Medicine (9 works) · Obstetrics (9 works) · China (7 works) · Demography (7 works) · Environmental health (6 works) · Gestational Diabetes Research and Management (6 works) · Pediatrics (6 works) · Pregnancy and preeclampsia studies (6 works)