Short and Long Time Bloodstains Age Determination by Colorimetric Analysis: A Pilot Study
Abstract
:1. Introduction
2. Results
Bloodstain Age Estimation Models
3. Discussion
4. Materials and Methods
4.1. Preparation of the Blood Samples
4.2. Colorimetric Analysis of the Blood Samples
4.3. Statistical Analyses
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Period | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
24 h | 60 days | |||||||||||
Training | Test | Training | Test | |||||||||
Prediction Models | r | MAD | CCR | r | MAD | CCR | r | MAD | CCR | r | MAD | CCR |
MLR | 0.902 (0.009) | 2.70(0.25) | 59.1 (6.69) | 0.743 (0.041) | 3.82 (0.32) | 53.8 (4.4) | 0.964 (0.003) | 3.80 (0.19) | 49.5 (2.8) | 0.957 (0.005) | 3.92 (0.35) | 52.6 (6.0) |
MQR | 0.967 (0.007) | 1.54(0.16) | 87.6 (2.23) | 0.281 (0.193) | 8.93 (5.79) | 64.7 (6.66) | 0.993 (0.001) | 1.72 (0.17) | 82.8 (3.9) | 0.820 (0.135) | 3.48 (0.65) | 64.7 (4.1) |
SVMr | 0.982 (0.006) | 1.12(0.18) | 94.1 (2.75) | 0.933 (0.012) | 2.29 (0.27) | 71.2 (5.6) | 0.995 (0.001) | 1.56 (0.10) | 91.5 (2.8) | 0.982 (0.003) | 3.05 (0.18) | 60.6 (3.7) |
SVMp | 0.961 (0.006) | 1.69(0.19) | 80.0 (2.46) | 0.942 (0.013) | 2.32 (0.28) | 69.7 (6.5) | 0.988 (0.003) | 2.24 (0.36) | 74.3 (9.0) | 0.974 (0.002) | 3.17 (0.09) | 58.7 (3.6) |
PCs | 0.682 (0.010) | 4.85 (0.11) | 29.7 (2.83) | 0.687 (0.005) | 4.80 (0.09) | 32.9 (4.0) | 0.944 (0.008) | 4.79 (0.42) | 41.1 (5.7) | 0.941 (0.008) | 4.99 (0.25) | 43.2 (4.7) |
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Marrone, A.; La Russa, D.; Montesanto, A.; Lagani, V.; La Russa, M.F.; Pellegrino, D. Short and Long Time Bloodstains Age Determination by Colorimetric Analysis: A Pilot Study. Molecules 2021, 26, 6272. https://doi.org/10.3390/molecules26206272
Marrone A, La Russa D, Montesanto A, Lagani V, La Russa MF, Pellegrino D. Short and Long Time Bloodstains Age Determination by Colorimetric Analysis: A Pilot Study. Molecules. 2021; 26(20):6272. https://doi.org/10.3390/molecules26206272
Chicago/Turabian StyleMarrone, Alessandro, Daniele La Russa, Alberto Montesanto, Vincenzo Lagani, Mauro F. La Russa, and Daniela Pellegrino. 2021. "Short and Long Time Bloodstains Age Determination by Colorimetric Analysis: A Pilot Study" Molecules 26, no. 20: 6272. https://doi.org/10.3390/molecules26206272