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Mendeley readers
Attention Score in Context
| Title |
A new model for the estimation of time of death from vitreous potassium levels corrected for age and temperature
|
|---|---|
| Published in |
Forensic Science International, July 2015
|
| DOI | 10.1016/j.forsciint.2015.07.020 |
| Pubmed ID | |
| Authors |
B. Zilg, S. Bernard, K. Alkass, S. Berg, H. Druid |
| Abstract |
Analysis of potassium concentration in the vitreous fluid of the eye is frequently used by forensic pathologists to estimate the postmortem interval (PMI), particularly when other methods commonly used in the early phase of an investigation can no longer be applied. The postmortem rise in vitreous potassium has been recognized for several decades and is readily explained by a diffusion of potassium from surrounding cells into the vitreous fluid. However, there is no consensus regarding the mathematical equation that best describes this increase. The existing models assume a linear increase, but different slopes and starting points have been proposed. In this study, vitreous potassium levels, and a number of factors that may influence these levels, were examined in 462 cases with known postmortem intervals that ranged from 2h to 17 days. We found that the postmortem rise in potassium followed a non-linear curve and that decedent age and ambient temperature influenced the variability by 16% and 5%, respectively. A long duration of agony and a high alcohol level at the time of death contributed less than 1% variability, and evaluation of additional possible factors revealed no detectable impact on the rise of vitreous potassium. Two equations were subsequently generated, one that represents the best fit of the potassium concentrations alone, and a second that represents potassium concentrations with correction for decedent age and/or ambient temperature. The former was associated with narrow confidence intervals in the early postmortem phase, but the intervals gradually increased with longer PMIs. For the latter equation, the confidence intervals were reduced at all PMIs. Therefore, the model that best describes the observed postmortem rise in vitreous potassium levels includes potassium concentration, decedent age, and ambient temperature. Furthermore, the precision of these equations, particularly for long PMIs, is expected to gradually improve by adjusting the constants as more reference data are added over time. A web application that facilitates this calculation process and allows for such future modifications has been developed. |
Mendeley readers
The data shown below were compiled from readership statistics for 146 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Turkey | 2 | 1% |
| Mexico | 1 | <1% |
| Belgium | 1 | <1% |
| Unknown | 142 | 97% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Bachelor | 26 | 18% |
| Student > Ph. D. Student | 19 | 13% |
| Student > Master | 16 | 11% |
| Researcher | 11 | 8% |
| Unspecified | 8 | 5% |
| Other | 28 | 19% |
| Unknown | 38 | 26% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 32 | 22% |
| Chemistry | 20 | 14% |
| Biochemistry, Genetics and Molecular Biology | 18 | 12% |
| Unspecified | 9 | 6% |
| Pharmacology, Toxicology and Pharmaceutical Science | 5 | 3% |
| Other | 19 | 13% |
| Unknown | 43 | 29% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 27 June 2021.
All research outputs
#8,534,528
of 25,371,288 outputs
Outputs from Forensic Science International
#1,411
of 4,089 outputs
Outputs of similar age
#89,519
of 258,627 outputs
Outputs of similar age from Forensic Science International
#17
of 80 outputs
Altmetric has tracked 25,371,288 research outputs across all sources so far. This one is in the 43rd percentile – i.e., 43% of other outputs scored the same or lower than it.
So far Altmetric has tracked 4,089 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 7.4. This one is in the 47th percentile – i.e., 47% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 258,627 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 55% of its contemporaries.
We're also able to compare this research output to 80 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 76% of its contemporaries.