Table 2.

Range, Mean, Standard Deviation, p Value (Two-Tailed), and Distribution of Differences Between Readings

Difference	n	Range (°C)	M ± SD (°C)	p	≤0.5°C (%)	≤1.0°C (%)	≤1.5°C (%)
TT minus ET
All readings	271	−2.6 to +1.3	−0.23 ± 0.47	<.001	75.3	96.3	99.3
Low range: ET <36.8°C	38	−0.5 to +1.3	+0.31 ± 0.42	<.001	73.7	94.7	100.0
Medium range: ET ≥36.8°C, <38.0°C	196	−1.2 to +0.8	−0.26 ± 0.36	<.001	80.6	98.5	100.0
High range: ET ≥38.0°C	37	−2.6 to +0.3	−0.62 ± 0.54	<.001	48.6	86.5	94.6
TT minus AT
All readings	270	−1.8 to +1.4	+0.21 ± 0.46	<.001	72.2	96.3	99.6
Low range: AT <35.9°C	5	0.5 to 1.1	No further computation because n <30
Medium range: AT ≥35.9°C, <37.3°C	212	−0.8 to +1.4	+0.30 ± 0.41	<.001	70.8	96.7	100.0
High range: AT ≥37.3°C	53	−1.8 to +0.8	−0.17 ± 0.42	.0082	83.0	96.2	98.1
ET minus AT
All readings	315	−0.9 to +2.0	+0.43 ± 0.42	<.001	61.3	93.3	98.7
Low range: ET <36.8°C	42	−0.7 to +0.7	+0.11 ± 0.33	.0356	88.1	100.0	100.0
Medium range: ET ≥36.8°C, <38.0°C	232	−0.9 to +2.0	+0.46 ± 0.38	<.001	59.9	94.8	99.6
High range: ET ≥38.0°C	41	−0.4 to +1.6	+0.65 ± 0.49	<.001	41.5	78.0	92.7