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Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Iran+J+Public+Health 2020 ; 49 (Suppl 1): 57-66 Nephropedia Template TP
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Validity of the Use of Wrist and Forehead Temperatures in Screening the General Population for COVID-19: A Prospective Real-World Study #MMPMID34268206
Chen G; Xie J; Dai G; Zheng P; Hu X; Lu H; Xu L; Chen X; Chen X
Iran J Public Health 2020[Oct]; 49 (Suppl 1): 57-66 PMID34268206show ga
BACKGROUND: We aimed to compare the accuracy of individuals' wrist and forehead temperatures with their tympanic temperature under different circumstances. METHODS: We performed a prospective observational study in a real-life population in Ningbo First Hospital in China. We consecutively recorded individuals' wrist and forehead temperatures in Celsius ( degrees C) using a non-contact infrared thermometer (NCIT). We also measured individuals' tympanic temperature using a tympanic thermometer (IRTT) and defined fever as a tympanic temperature of >/=37.3 degrees C. RESULTS: We enrolled 528 participants, including 261 indoor and 267 outdoor participants. We grouped the outdoor participants into four groups according to their means of transportation to the hospital: by foot, by bicycle/electric vehicle, by car, or as a passenger in a car. Under different circumstances, the mean difference in the forehead measurement ranged from -1.72 to -0.56 degrees C across groups, and that in the wrist measurement ranged from -0.96 to -0.61 degrees C. Both measurements had high fever screening abilities in indoor patients. (Wrist: AUC 0.790; 95% CI: 0.725-0.854, P<0.001; forehead: AUC 0.816; 95% CI: 0.757-0.876, P <0.001). The cut-off value of the wrist measurement for detecting a tympanic temperature of >/=37.3 degrees C was 36.2 degrees C, with 86.4% sensitivity and 67.0% specificity, and the best threshold for the forehead measurement was 36.2 degrees C, with 93.2% sensitivity and 60.0% specificity. CONCLUSION: Wrist measurements are more stable than forehead measurements under different circumstances. Both measurements have favorable fever screening abilities in indoor patients. The cut-off values were both 36.2 degrees C.