The Forensic Tabula Rasa - Agreement on Manner of Death from Injury Patterns to the Extremities Only.

Area of Science:

• Forensic Pathology
• Legal Medicine
• Trauma Analysis

Background:

• Determining manner of death is a key forensic pathology task in Sweden.
• Contextual information is typically vital for these assessments.
• This study isolates autopsy findings of extremity sharp force injuries.

Purpose of the Study:

• To evaluate inter-rater reliability and accuracy of forensic pathologists.
• To assess manner of death determination based solely on autopsy findings of sharp force injuries to extremities.
• To exclude the influence of contextual data in this specific assessment.

Main Methods:

• 23 forensic pathologists and trainees evaluated injury data from 59 cases using body maps.
• Inter-rater agreement was quantified using Fleiss' kappa.
• Sensitivity, specificity, and the impact of experience and injury count were analyzed.

Main Results:

• Moderate agreement was observed among raters.
• Sensitivity was higher for suicides (0.656) than homicides (0.535); specificity was high for both (>0.85).
• Increased number of injuries positively correlated with agreement and sensitivity.

Conclusions:

• Forensic pathologists exhibit moderate agreement in determining manner of death from extremity sharp force injuries.
• Experience influenced specificity, while injury count impacted sensitivity.
• While extremity injury patterns offer some interpretative value, contextual information is essential for definitive assessments.