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Table 1 Analysis based on the Bland–Altman plot for rectal temperature and ear canal temperature in Experiments 1, 2, and 3

From: Evaluation of newly developed wearable ear canal thermometer, mimicking the application to activities on sports and labor fields

Experiment

Period

Correlation coefficients (P value)

LoA

ICC (P value)

Experiment 1, fanning trial

Rest

− 0.36 (P = 0.003)

0.0 ± 0.4 ℃

0.75 (P < 0.001)

Fanning

− 0.66 (P < 0.001)

0.2 ± 0.6 ℃

0.58 (P < 0.001)

Recovery

− 0.57 (P < 0.001)

0.1 ± 0.5 ℃

0.68 (P < 0.001)

Experiment 1, water immersion trial

Rest

− 0.50 (P < 0.001)

0.1 ± 0.4 ℃

0.64 (P < 0.001)

Water immersion

− 0.44 (P < 0.001)

0.1 ± 0.5 ℃

0.63 (P < 0.001)

Recovery

− 0.26 (P = 0.03)

0.3 ± 0.6 ℃

0.44 (P = 0.01)

Experiment 2

Rest with intermittent fanning

0.24 (P = 0.006)

 − 0.1 ± 0.3 ℃

0.54 (P < 0.001)

Exercise with intermittent fanning

0.39 (P < 0.001)

0.1 ± 0.5 ℃

0.58 (P < 0.001)

Experiment 3

Exercise

− 0.60 (P < 0.001)

 − 0.2 ± 0.4 ℃

0.83 (P = 0.007)

  1. LoA limits of agreement, ICC intraclass correlation coefficient