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Table 2 Temperature variation within the age groups

From: Forehead or ear temperature measurement cannot replace rectal measurements, except for screening purposes

      Bland-Altman comparison (°C)
Age group No. of children Method Mean temperature (°C) 95% CI Mean difference 95% CI 95% prediction interval
Total 965 Temporal 37.9 37.9-38.0 0.13 0.08-0.17 −1.20 - 1.49
995 Tympanic 37.8 37.8-37.9 0.05 0.02- 0.08 −0.97 - 1.07
995 Rectal 37.8 37.7-37.9 reference   
0-5 months 133 Temporal 37.5 37.4-37.7 0.16 0.06 - 0.25 - 0.97 - 1.29
136 Tympanic 37.1 37.1-37.3 −0.14 − 0.23 - -0.06 −1.15 - 0.87
136 Rectal 37.4 37.2-37.5 reference   
6-11 months 124 Temporal 37.9 37.7-38.1 −0.04 −0.16 - 0.09 −1.43 - 1.36
128 Tympanic 38.0 37.8-38.1 0.00 −0.08 - 0.08 −0.89 - 0.90
128 Rectal 38.0 37.8-38.1 reference   
12-35 months 311 Temporal 38.1 38.0-38.3 0.06 −0.02 - 0.14 −1.35 - 1.46
320 Tympanic 38.1 38.0-38.2 0.01 −0.04 - 0.07 −1.01 - 1.02
320 Rectal 38.1 37.9-38.2 reference   
3-5 years 162 Temporal 38.2 38.0-38.3 0.25 0.16 - 0.35 0.96 - 1.47
169 Tympanic 38.1 37.9-38.3 0.19 0.12 - 0.26 −0.73 - 1.11
169 Rectal 37.9 37.7-38.1 reference   
6-11 years 131 Temporal 37.8 37.7-38.0 0.21 0.10 - 0.32 −1.06 - 1.49
135 Tympanic 37.8 37.6-38.0 0.18 0.09 - 0.27 −0.85 - 1.21
135 Rectal 37.6 37.5-37.8 reference   
12-18 years 104 Temporal 37.6 37.4-37.8 0.17 0.04 - 0.30 −1.18 - 1.52
107 Tympanic 37.5 37.3-37.7 0.05 −0.06 - 0.16 −1.07 - 1.17
107 Rectal 37.4 37.2-37.6 reference