Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/129808
Title: A cross-sectional study on reference ranges of normal oral temperatures among students in Singapore
Authors: Yoke, P.K.
Ma, S.
Seo, Y.C. 
Chia, F.M.L.
Kam, K.L.
Keywords: Cut-offs
Infectious diseases
SARS
Issue Date: Jul-2009
Citation: Yoke, P.K., Ma, S., Seo, Y.C., Chia, F.M.L., Kam, K.L. (2009-07). A cross-sectional study on reference ranges of normal oral temperatures among students in Singapore. Annals of the Academy of Medicine Singapore 38 (7) : 613-620. ScholarBank@NUS Repository.
Abstract: Introduction: During the 2003 Severe Acute Respiratory Syndrome (SARS) outbreak, all schools in Singapore implemented twice-daily temperature monitoring for students to curtail the spread of the disease. Students were not allowed to attend school if their temperature readings were >37.8oC for students ≤12 years old, or ≥37.5°C for students >12 years old. These values had been arbitrarily determined with professional inputs. The aim of this study is to determine the reference ranges of normal oral temperatures of students in Singapore and recommend the cut-off values for febrile patients. This may be used in another similar outbreak of an infectious disease with fever. Materials and Methods: Four co-ed primary schools and 4 co-ed secondary schools were selected for this study. Four thousand and two hundred primary 1 to secondary 3 students responded (96.8%) and participated in this cross-sectional study. The mean ages of the students in the lowest (primary 1) and highest educational levels (secondary 3) were 7.4 years old and 15.3 years old, respectively. Twelve oral temperature readings per student (i.e. measurements taken 4 times a day in 3 consecutive days) were collected. Forty-six thousand seven hundred and eighty-three (92.8%) out of 50,400 temperature readings were used for the analysis as missing data were excluded. A quantile regression model was applied to estimate reference ranges of normal oral temperatures for students with adjustment for potential confounding factors. Results: The age-specific reference ranges of normal oral temperature from this study for students ≤12 years old and >12 years old were 35.7°C to 37.7°C and 35.6°C to 37.4°C, respectively. Temperatures of 37.8°C and 37.5°C are therefore recommended as the oral temperature cut-offs for those ≤12 years old and >12 years old, respectively. Conclusion: This study has provided empirical data on normal oral temperature cut-offs which could be used during temperature screening in schools.
Source Title: Annals of the Academy of Medicine Singapore
URI: http://scholarbank.nus.edu.sg/handle/10635/129808
ISSN: 03044602
Appears in Collections:Staff Publications

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