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Discrepancy rate and associated factors of gestational age determination by the last menstrual period with the first-trimester sonography in certained menstruation period pregnant women

Discrepancy rate and associated factors of gestational age determination by the last menstrual period with the first-trimester sonography in certained menstruation period pregnant women

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
TCTR
Registry ID
TCTR20200708005
Enrollment
Unknown
Registered
2020-07-08
Start date
2020-07-08
Completion date
Unknown
Last updated
2026-08-03

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

Conditions

first&#45

Interventions

first&#45
trimester pregnant women
Diagnostic
trimester sonography

Sponsors

Khon Kaen University
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
18 Years to 60 Years

Inclusion criteria

Inclusion criteria: 1. pregnant women who age 18 years old or more than 2. Gestational age between 8 to 12+6 weeks 3. Can remember LMP 4. Regular menstrual period 5. No contraception used in 3 months

Exclusion criteria

Exclusion criteria: 1. Pregnant women who use assisted reproductive technology 2. Pregnant women who have already confirmed gestational age by ultrasound

Design outcomes

Primary

MeasureTime frame
Discrepancy rate of gestational age determination by the last menstrual period when patient was examined first-trimester sonography—

Secondary

MeasureTime frame
associated factors of Discrepancy rate of gestational age determination by the last menstrual period when patient was examined Patient reported outcome using a questionnaire interview—

Countries

Thailand

Contacts

Public ContactAnya Han-idhikul

Khon Kaen University

hananya94@gmail.com0846677836

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026