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A case records based study for investigation of the effects of daily meteorological perturbation on pregnancy outcome: Follow-up of a cohort of young women undergoing IVF treatment

The effects of daily meteorological perturbation on pregnancy outcome: Follow-up of a cohort of young women undergoing IVF treatment

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR1900025772
Enrollment
Unknown
Registered
2019-09-07
Start date
2019-09-15
Completion date
Unknown
Last updated
2019-09-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

IVF

Interventions

Case series:Daily meteorological perturbation

Sponsors

Assisted Reproductive Technology Unit, Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
22 Years to 44 Years

Inclusion criteria

Inclusion criteria: The eligibility criteria for patients and reasons are listed below: 1) Patients were under 35 years old for eliminating the impact of advanced age on fertility; 2) Patients underwent a long protocol of ovarian stimulation cycle. The relatively long duration from drug administration to embryo transfer allowed the effect of meteorological variations to be revealed in the patient; 3) Patients underwent fresh embryo transfer: only the stimulation followed by fresh embryo transfer can present the constant influence of meteorological variations.

Exclusion criteria

Exclusion criteria: The dates of gonadotropin administration (CYCL), oocyte retrieval (OR), embryo transfer (ER) were carefully examined. Patients with missing/wrong CYCL, OR, ER records or pregnancy outcomes will be excluded.

Design outcomes

Primary

MeasureTime frame
Pregnancy;—

Countries

China

Contacts

Public ContactLi Tin Chiu

Assisted Reproductive Technology Unit, Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong

tinchiu.li@cuhk.edu.hk+852 35053199

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026