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A comparative study on the accuracy of noninvasive thermometers
Fadzlin Mohd Fadzil1, David Choon, Kulenthran Arumugam
1Trauma and Emergency Department, U niversity of Malaya, Kuala Lumpur, Malaysia. lin_fadzil@hotmail.com
Background:
This study assessed the concordance of the temperatures of the digital, liquid crystal forehead and digital infrared tympanic thermometers with the mercury in glass thermometer.
Methods:
Temperatures in degrees celsius were taken simultaneously using the four thermometers in 207 patients at the casualty department of a Malaysian hospital. The Bland Altman statistical test was used to assess the concordance by the 95% limits of agreement between the three newer thermometers and the mercury in glass thermometer.
Results:
The digital thermometer gave the best concordance (limits of agreement 0.48-0.59 degrees C). The liquid crystal forehead thermometer gave the least concordance (limits of agreement -1.14-0.98 degrees C). The digital infrared tympanic was in between (limits of agreement -0.88-0.85 degrees C).
Discussion:
The digital thermometer provides the best agreement with the mercury in glass thermometer. The infrared tympanic thermometer may be a preferable option for the uncooperative patient. The liquid crystal forehead thermometer is best used at home.
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