TRV-2026-2426Version 1 · Published

Saved · see the current record

Why this version exists

Certified into the record

The exact text we saved

This is the version exactly as it was saved, character for character. The SHA-256 hash below is a 64-character code worked out from that text. Run the same text through SHA-256 and you get the same code; change a single letter and the code comes out completely different. Each version also stores the previous version’s hash, which chains them together so no version can be swapped out quietly.

TRUVACE RECORD VERSION
record: TRV-2026-2426
version: 1
kind: certified
reason: Certified into the record
timestamp: 2026-11-08T06:01:57.057277Z
status: published
lens: g_space
sector: health
headline: Development of machine learning models for fetal birth weight prediction: A single-center study in a Turkish population
dek: Fetal birth weight (BW) is a critical indicator of the prognosis of perinatal health. Accurate estimation of BW is essential in determining the appropriate delivery method. This single-center study aims to evaluate the performance of various machine learning (ML) algorithms in estimating BW. The study population consisted of 456 pregnant women with singleton pregnancies evaluated at a single tertiary center in the Karaman region of Turkiye between 38 and 41 weeks based on their last menstrual period, who gave bi…
gain_title: In a single-center study of 456 pregnant women in Turkiye, a linear regression model estimated fetal birth weight with a mean absolute error of 184.30 grams, against 223.33 grams for the Hadlock III formula.
problem_title: (none)
trace_subject: (none)
gain_reading: In a single-center study of 456 pregnant women in Turkiye, a linear regression model estimated fetal birth weight with a mean absolute error of 184.30 grams, against 223.33 grams for the Hadlock III formula.
gain_evidence: In our study, the model demonstrating the highest predictive accuracy was provided by Linear Regression algorithm with an MAE value of 184.30 grams. | The formula closest to these values was Hadlock III, with an MAE value of 223.33 grams.
problem_reading: (none)
problem_evidence: (none)
quick_read: Researchers at a tertiary center in the Karaman region of Turkiye tested nine machine learning models for estimating fetal birth weight. Seven of the nine had the lowest mean absolute error, between 184.30 and 190.00 grams, and linear regression did best at 184.30 grams.

The closest conventional comparator, the Hadlock III formula, had an error of 223.33 grams, so the best model was about 39 grams closer on average. Birth weight estimates help determine the appropriate delivery method, so smaller errors could matter in delivery planning.

The work is a single-center study of 456 women, so how the models perform in other hospitals and populations is not established.
limitation: The work is a single-center study in one Turkish population, and only women delivering a phenotypically normal newborn within 7 days of ultrasound were included, which limits how widely the results apply.
tag: Evidence-backed gain
key_points: The study included 456 pregnant women with singleton pregnancies, evaluated at one tertiary center in the Karaman region of Turkiye. | Women were assessed between 38 and 41 weeks based on last menstrual period. | All women gave birth to a phenotypically normal live newborn within 7 days after the ultrasound examination. | Nine machine learning models were developed; seven had the lowest mean absolute errors, from 184.30 to 190.00 grams. | Linear regression was the most accurate model, with an error of 184.30 grams. | Hadlock III, the closest formula, had an error of 223.33 grams.
rundown: The study evaluated the performance of various machine learning algorithms for estimating fetal birth weight, which the authors describe as a key indicator of perinatal health prognosis and important for choosing the delivery method.

Participants were 456 women with singleton pregnancies seen at a single tertiary center in the Karaman region of Turkiye between 38 and 41 weeks. Only women who delivered a phenotypically normal live newborn within 7 days of the ultrasound were included.

Seven of nine machine learning models produced mean absolute errors between 184.30 and 190.00 grams. Linear regression performed best at 184.30 grams, compared with 223.33 grams for the Hadlock III formula.
sources:
- peer_reviewed | AFRICAN JOURNAL OF REPRODUCTIVE HEALTH | https://doi.org/10.29063/ajrh2026/v30i20.4 | 2026-11-01
prev: 0000000000000000000000000000000000000000000000000000000000000000
SHA-256 hash
8e98ebab01e1b1bc474cd972b179dbc3710d17655562079e31066fe0c96ec0a2
Previous version’s hash
0000000000000000000000000000000000000000000000000000000000000000
Check this record hasn’t been altered
How to check it yourself, without trusting this page

Download any version from /api/record/TRV-2026-2426 and hash its canonical field yourself, for example with shasum -a 256. You should get its content_hash. Each version’s text also ends with prev:and the hash of the version before it (version 1 points to 64 zeros). If anyone had changed a single character of any version after it was saved, those hashes wouldn’t line up.