Influence of measurement errors on temperature-based death time determination.
Temperature-based methods represent essential tools in forensic death time determination. Empirical double exponential models have gained wide acceptance because they are highly flexible and simple to handle. The most established model commonly used in forensic practice was developed by Henssge. It contains three independent variables: the body mass, the environmental temperature, and the initial body core temperature. The present study investigates the influence of variations in the input data (environmental temperature, initial body core temperature, core temperature, time) on the standard deviation of the model-based estimates of the time since death. Two different approaches were used for calculating the standard deviation: the law of error propagation and the Monte Carlo method. Errors in environmental temperature measurements as well as deviations of the initial rectal temperature were identified as major sources of inaccuracies in model based death time estimation.
Hubig
Michael
M
Institute of Legal Medicine, University Hospital Jena, Fürstengraben 23, 07740 Jena, Germany.
Muggenthaler
Holger
H
Mall
Gita
G
D000465:Algorithms; D001344:Autopsy / Q000379:methods*; D001831:Body Temperature; D005554:Forensic Medicine / Q000379:methods*; D006801:Humans; D009010:Monte Carlo Method; D011180:Postmortem Changes; D011237:Predictive Value of Tests; D013269:Stochastic Processes; D013696:Temperature; D013997:Time Factors
Int J Legal Med. 2000;113(6):320-31
11100426
Z Rechtsmed. 1979 Apr 27;83(1):49-67
442834
Med Sci Law. 1969 Jul;9(3):178-82
5385276
Forensic Sci Int. 1988 Oct;39(1):89-95
3209149
Int J Legal Med. 2000;113(6):303-19
11100425
Soud Lek. 2007 Oct;52(4):50-6
18189070
Med Sci Law. 1980 Apr;20(2):115-25
7392848
Z Rechtsmed. 1990;103(4):257-78
2321429
Ann Acad Med Singap. 2008 Apr;37(4):347-53
18461221
Forensic Sci Int. 1985 May;28(1):35-46
4018680
Int J Legal Med. 2007 Jul;121(4):267-73
16636865
Leg Med (Tokyo). 2005 Jan;7(1):1-14
15556010
Int J Legal Med. 2005 Jul;119(4):185-94
15480732
Acta Med Leg Soc (Liege). 1956;9(Spec No):205-13
13434819
Forensic Sci Int. 2002 Feb 18;125(2-3):231-6
11909669