Xiamen Registry of Pregnant Women and Offspring (REPRESENT)
Xiamen Registry of Pregnant Women and Offspring (REPRESENT): A Population-based, Long-term Follow-up Database Linking Four Major Healthcare Data Platforms
To improve the health of women and children under the background of Healthy China 2030, the investigators developed REPRESENT by establishing a pregnancy registry in Xiamen, a sub-provincial city of over four million residents in east China, based on the Maternal and Child Health Management Platform, and then linking to three other platforms, i.e. Residents Healthcare Management Platform, Primary Healthcare Management Platform, and Electronic Healthcare Records (EHR) Platform, which had been developed since 2006. The registry documented information and events about pregnant women from registration at their first trimester to postpartum, and includes the childhood follow up records. The registry not only enables longitudinal follow up of pregnant women and their offspring, but also expands the scope of database from pre-pregnancy exposures to long-term outcomes by data linkage.
During the past 11 years (January 2008 to March 2019), the REPRESENT has accumulated data concerning more than 700 thousands pregnancies. The data volume is substantial with over 800 variables being documented, and most variables are designed as structured fields. The disease categories and codes are standardized according to the International Classification of Diseases 10th Revision (ICD-10). The whole process of data access, data extraction, data processing and data analysis was conducted through an internal-only accessible server at Xiamen Health and Medical Big Data Center. All investigators cannot access sensitive information, are required to sign data confidentiality agreement and should obtain approval by the Xiamen Health and Medical Big Data Center and the Chinese Evidence-based Medicine Center.
Studieöversikt
Status
Betingelser
Intervention / Behandling
Studietyp
Inskrivning (Faktisk)
Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Kön som är behöriga för studier
Testmetod
Studera befolkning
Beskrivning
Inclusion Criteria:
- Pregnant women who registered at the Maternal and Child Health Management Platform in Xiamen.
Exclusion Criteria:
- None.
Studieplan
Hur är studien utformad?
Designdetaljer
Kohorter och interventioner
Grupp / Kohort |
Intervention / Behandling |
|---|---|
|
Gravid kvinna
|
Pregnant women with those exposures of interest determined in specific research based on the registry
|
Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Förekomst av postpartumblödning
Tidsram: Inom 24 timmar efter leverans
|
Postpartum blödningsvolym ≥500 ml.
|
Inom 24 timmar efter leverans
|
|
Förekomst av för tidig födsel
Tidsram: Upp till 37 veckor
|
Leverans före 37:e graviditetsveckan.
|
Upp till 37 veckor
|
|
Förekomst av neonatal död
Tidsram: Inom 28 dagar efter leverans
|
Neonatal död
|
Inom 28 dagar efter leverans
|
|
Incidence of pre-eclampsia
Tidsram: Up to 42 weeks
|
Maternal systolic blood pressure ≥ 140 mmHg and (or) diastolic pressure ≥ 90 mmHg, accompanied by any one of the following: urinary protein ≥ 0.3g/24 h, or the ratio of urinary protein and creatinine ≥ 0.3, or random urine protein ≥ (+) if quantitative urine protein is not available; no proteinuria but with any damages of heart, lung, liver, kidney and other important organs, or with abnormal changes of blood system, digestive system and nervous system, or placenta fetus involvement, etc.
|
Up to 42 weeks
|
|
Incidence of eclampsia
Tidsram: Up to 42 weeks
|
Tonic-clonic seizures (convulsions) in preeclampsia patients, including convulsions and coma, not due to pre-existing or organic brain disorders.
|
Up to 42 weeks
|
|
Incidence of gestational diabetes
Tidsram: Up to 32 weeks
|
By oral glucose tolerance test between 24 and 28 gestational weeks (fasting glucose ≥5.1 mmol/L, 1-h glucose ≥10.0 mmol/L, 2-h glucose ≥8.5 mmol/L; one abnormal result sufficient).
|
Up to 32 weeks
|
|
Incidence of ruptured uterus
Tidsram: Up to 42 weeks
|
Rupture of maternal uterus confirmed by laparotomy.
|
Up to 42 weeks
|
|
Incidence of maternal death
Tidsram: Up to 52 weeks
|
Maternal death
|
Up to 52 weeks
|
|
Incidence of birth defects
Tidsram: Up to 7 years
|
Birth defects such as anencephaly, spina bifida, encephalocele, hydrocephalus, cleft palate, cleft lip, microtia, esophageal atresia or stenosis, anorectal, hypospadias, ectropion of bladder, talipes equinovarus, polydactylism, ankylodactylia, congenital diaphragmatic hernia, umbilical cord prolapse, gastroschisis, conjoined twins, down syndrome, congenital heart disease, or other birth defects.
|
Up to 7 years
|
|
Incidence of neonatal birth weight
Tidsram: Up to 42 weeks
|
Neonatal birth weight measured after birth.
|
Up to 42 weeks
|
|
Incidence of stillbirth
Tidsram: Up to 42 weeks
|
Fetus death at or after 20-28 weeks of gestation.
|
Up to 42 weeks
|
Samarbetspartners och utredare
Sponsor
Samarbetspartners
Utredare
- Studierektor: Xin Sun, PhD, Chinese Evidence-based Medicine Center, West China Hospital of Sichuan University
Studieavstämningsdatum
Studera stora datum
Studiestart (Faktisk)
Primärt slutförande (Faktisk)
Avslutad studie (Förväntat)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Faktisk)
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Nyckelord
Andra studie-ID-nummer
- REPRESENT
Plan för individuella deltagardata (IPD)
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IPD-planbeskrivning
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