Evidence map›Paper›PMID 39023692›Full record

ArticleForensic science, medicine, and pathology2025

Estimation of Time-Since-Deposition of bloodstains on different surfaces using ATR-FTIR Spectroscopy and Chemometrics.

Deepthi Nagesh, B Nagarajamurthy

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Article in Forensic science, medicine, and pathology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Deepthi NageshDepartment of Studies in Criminology and Forensic Science, Maharaja's College, University of Mysore, Mysuru, Karnataka, India. deepthinagesh4@gmail.com.ORCID 0000-0003-2576-0818
B NagarajamurthyDepartment of Studies in Criminology and Forensic Science, Maharaja's College, University of Mysore, Mysuru, Karnataka, India.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Blood is commonly discovered at crime scenes in various forms, including stains, dried residue, pools, and fingerprints on assorted surfaces. Estimating the age of bloodstains is a crucial aspect of reconstructing crime scenes. This research aimed to investigate how the nature of different surfaces affects the estimation of bloodstain age, utilizing a reliable and non-destructive approach. The study employed ATR-FTIR spectroscopy in conjunction with Chemometric techniques such as PCA (Principal Component Analysis) and OPLSR (Orthogonal Signal Correction Partial Least Square Regression Analysis) to analyze spectral data and develop regression models for estimating bloodstain age on cement, metal, and wooden surfaces for up to eleven days. The chemometric models for bloodstains on all three substrates demonstrated strong performance, with predictive Root Mean Square Error (RMSE) values ranging from 1.1 to 1.43 and R

Indexed as

Blood StainsChemometricsConstruction MaterialsForensic MedicineHumansLeast-Squares AnalysisMetalsPorosityPrincipal Component AnalysisSpectroscopy, Fourier Transform InfraredSurface PropertiesTime FactorsWoodMetalsATR- FTIR spectroscopyBloodstainsCementChemometricsMetal surfacesOrthogonal Signal Correction Partial Least Square Regression Analysis (OPLSR)Principal Component Analysis (PCA)Time since deposition of bloodWood

Identifiers

PMID39023692

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.