PrevalenceNCT04486456
Epidemiological Study on Anemia and Iron Deficiency in Pregnancy in Medical Institutions in Some Areas of China
An observational study of Prevalence, run by Peking University First Hospital.
Trial summary
The purpose of this study is to describe the prevalence of anemia and iron deficiency in pregnancy through a multi-center, prospective follow-up study . To explore the influence factors of anemia and iron deficiency in pregnancy; to explore the influence of anemia and iron deficiency in pregnancy on maternal and fetal… Read more about this study
- Who is it for?
- Ages 18 years and older, women only
- Conditions the study is for
- Prevalence
- How many people
- 20,000 participants
- Where
- No sites listed yet
- Study dates
- Aug 2020to Dec 2022
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- Women only
- Adult, Older adult
Study population: Pregnancy patients
Who may be able to join
- Regular prenatal check-ups were conducted in the hospitals participating in the study, and pregnant women who planned to give birth in hospital were established a maternity health manual
- 18 years and older
- Patients have to agree to participate by signing a consent
Who cannot join
- have severe chronic diseases with Pre-pregnancy
- Suffer from severe mental illness
Trial locations and contacts
No sites are listed yet.
About this study
The purpose of this study is to describe the prevalence of anemia and iron deficiency in pregnancy through a multi-center, prospective follow-up study . To explore the influence factors of anemia and iron deficiency in pregnancy; to explore the influence of anemia and iron deficiency in pregnancy on maternal and fetal outcomes.
Read the detailed description
- To understand the epidemiological characteristics of anemia and iron deficiency in pregnancy and describe the epidemiological situation of anemia and iron deficiency.
- To explore the influence factors of anemia and iron deficiency in pregnancy.
- To explore the influence of anemia and iron deficiency during pregnancy on the pregnancy outcome of mothers and infants.
- Conditions
- Prevalence
- Keywords
- Iron deficiency, Anemia during pregnancy
- Medical subject headings
- Iron Deficiencies
What is being measured
The primary outcome is the main question the study is designed to answer.
Hb
Proportion of patients with Hb<110g/L
Measured: Completed by observation，an average of 1 year
Secondary outcomes (1)
SF
Proportion of patients with SF<20μg/L
Measured: Completed by observation，an average of 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted24 Jul 2020
- Study startAug 2020 (estimated)
- Primary completionAug 2022 (estimated)
- Study completionDec 2022 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for PrevalenceStudies of the same condition, open and under way.
- More trials run by Peking University First HospitalThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 20,000 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Peking University First Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Huixia Yang, Peking University First Hospital
- Investigators
- Xia H Yang, Principal investigator, The First Affiliated Hospital of Peking University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04486456
- Sponsor's protocol ID
- ERIC STUDY
- Status last verified
- Jul 2020
- First submitted
- 16 Jun 2020
- Last updated
- 24 Jul 2020
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Publications
Wang X, Zhang X, Juan J, Gao D, Yang H, Zhang M, Chen X, Wang X, Ma Y, Teng Y, Meng H, Wang X, Yang Q, Xu L, Shan S. Association of maternal longitudinal haemoglobin concentrations with adverse pregnancy outcomes: A prospective cohort study. J Glob Health. 2026 May 22;16:04168. doi: 10.7189/jogh.16.04168.
PubMed 42171390Zhang X, Wang X, Juan J, Gao D, Yang H, Zhang M, Chen X, Wang X, Ma Y, Teng Y, Zhang G, Wang Y, Meng H, Wang X, Yang Q, Xu L, Shan S. Incidence and factors on anaemia during pregnancy in China: a multicentre prospective cohort study. J Glob Health. 2026 Feb 13;16:04058. doi: 10.7189/jogh.16.04058.
PubMed 41685631
Study at a glance
From the registry record, last updated by the sponsor on 24 Jul 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Epidemiological Study on Anemia and Iron Deficiency in Pregnancy in Medical Institutions in Some Areas of China
- ClinicalTrials.gov ID
- NCT04486456
- Acronym / sponsor ID
- ERIC STUDY
- Conditions
- Prevalence
- Keywords
- Iron deficiency, Anemia during pregnancy
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 20,000 participants (estimated)
- Lead sponsor
- Peking University First HospitalUniversity, hospital or other
- Study start
- Aug 2020 (estimated)
- Primary completion
- Aug 2022 (estimated)
- Study completion
- Dec 2022 (estimated)
- First posted
- 24 Jul 2020 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to describe the prevalence of anemia and iron deficiency in pregnancy through a multi-center, prospective follow-up study . To explore the influence factors of anemia and iron deficiency in pregnancy; to explore the influence of anemia and iron deficiency in pregnancy on maternal and fetal outcomes.
Detailed description
- To understand the epidemiological characteristics of anemia and iron deficiency in pregnancy and describe the epidemiological situation of anemia and iron deficiency.
- To explore the influence factors of anemia and iron deficiency in pregnancy.
- To explore the influence of anemia and iron deficiency during pregnancy on the pregnancy outcome of mothers and infants.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 years and older
- Sex
- Female only
- Age groups
- Adult, Older adult
- Study population
- Pregnancy patients
Key inclusion criteria (3 listed)
- Regular prenatal check-ups were conducted in the hospitals participating in the study, and pregnant women who planned to give birth in hospital were established a maternity health manual
- 18 years and older
- Patients have to agree to participate by signing a consent
Key exclusion criteria (2 listed)
- have severe chronic diseases with Pre-pregnancy
- Suffer from severe mental illness
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Hb
Time frame: Completed by observation，an average of 1 year
Proportion of patients with Hb<110g/L
1 secondary outcome
SF
Time frame: Completed by observation，an average of 1 year
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Jul 2020.
- Derived from this study: PubMed 42171390Wang X, Zhang X, Juan J, Gao D, Yang H, Zhang M, Chen X, Wang X, Ma Y, Teng Y, Meng H, Wang X, Yang Q, Xu L, Shan S. Association of maternal longitudinal haemoglobin concentrations with adverse pregnancy outcomes: A prospective cohort study. J Glob Health. 2026 May 22;16:04168. doi: 10.7189/jogh.16.04168.
- Derived from this study: PubMed 41685631Zhang X, Wang X, Juan J, Gao D, Yang H, Zhang M, Chen X, Wang X, Ma Y, Teng Y, Zhang G, Wang Y, Meng H, Wang X, Yang Q, Xu L, Shan S. Incidence and factors on anaemia during pregnancy in China: a multicentre prospective cohort study. J Glob Health. 2026 Feb 13;16:04058. doi: 10.7189/jogh.16.04058.
- Individual participant dataSharing planned: Undecided
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Xia H Yang principal investigator
The First Affiliated Hospital of Peking University
Questions about this trial
What is this clinical trial studying?
An observational study of Prevalence, run by Peking University First Hospital.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 24 Jul 2020. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Song X Zhang (13901024399, 1033341681@qq.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Hb (time frame: Completed by observation，an average of 1 year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04486456, which also lists 2 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 Jul 2020.